diff --git a/BASLER_cameras/basler.c b/BASLER_cameras/basler.c
index bf82be5..80ff5c1 100644
--- a/BASLER_cameras/basler.c
+++ b/BASLER_cameras/basler.c
@@ -293,10 +293,10 @@ static int setdevno(int N){
     return TRUE;
 }
 
-static int setbitdepth(int i){
+static int setbitdepth(int depth){
 #define MONON 4
     const char *fmts[MONON] = {"Mono16", "Mono14", "Mono12", "Mono10"};
-    if(i == 0){ // 8 bit
+    if(depth == 0){ // 8 bit
         if(!PylonDeviceFeatureIsAvailable( hDev, "EnumEntry_PixelFormat_Mono8" )) return FALSE;
         PYLONFN(PylonDeviceFeatureFromString, hDev, "PixelFormat", "Mono8");
         green("Pixel format: Mono8\n");
@@ -370,21 +370,21 @@ static int capture(IMG *ima){
     int width = grabResult.SizeX, height = grabResult.SizeY, stride = grabResult.SizeX + grabResult.PaddingX;
     //TIMESTAMP("start converting");
     if(is16bit){
-        int s2 = stride<<1, w2 = width<<1;
+        int s2 = stride<<1;
         OMP_FOR()
         for(int y = 0; y < height; ++y){
-            uint16_t *Out = &ima->data[y*width];
+            uint8_t *Out = &((uint8_t*)ima->data)[y*width];
             const uint8_t *In = &imgBuf[y*s2];
-            memcpy(Out, In, w2);
+            for(int x = 0; x < width; ++x){
+                *Out++ = *In; In += 2;
+            }
         }
     }else{
         OMP_FOR()
         for(int y = 0; y < height; ++y){
-            uint16_t *Out = &ima->data[y*width];
+            uint16_t *Out = &((uint16_t*)ima->data)[y*width];
             const uint8_t *In = &imgBuf[y*stride];
-            for(int x = 0; x < width; ++x){
-                *Out++ = *In++;
-            }
+            memcpy(Out, In, width);
         }
     }
     //TIMESTAMP("image ready");
diff --git a/Dummy_cameras/dummyfunc.c b/Dummy_cameras/dummyfunc.c
index 795139b..73eaa98 100644
--- a/Dummy_cameras/dummyfunc.c
+++ b/Dummy_cameras/dummyfunc.c
@@ -40,6 +40,7 @@ static float focuserpos = 1., brightness = 1., gain = 0.;
 static float camtemp = -30., exptime = 0.;
 static capture_status capstat = CAPTURE_NO;
 static double texpstart = 0.;
+static uint8_t bitpix = 16; // bit depth: 8 or 16
 
 static int campoll(capture_status *st, float *remain){
     if(capstat != CAPTURE_PROCESS){
@@ -68,16 +69,37 @@ static int startexp(){
 static int camcapt(IMG *ima){
     static int n = 0;
     if(!ima || !ima->data) return FALSE;
-    OMP_FOR()
-    for(int y = 0; y < ima->h; ++y){
-        uint16_t *d = &ima->data[y*ima->w];
-        for(int x = 0; x < ima->w; ++x){ // sinusoide 100x200
-            //*d++ = (uint16_t)(((n+x)%100)/99.*65535.);
-            *d++ = (uint16_t)((1. + sin((n+x) * M_PI/50.)*sin((n+y) * M_PI/100.))*32767.);
+    if(bitpix == 16){
+        OMP_FOR()
+        for(int y = 0; y < ima->h; ++y){
+            uint16_t *d = &((uint16_t*)ima->data)[y*ima->w];
+            for(int x = 0; x < ima->w; ++x){ // sinusoide 100x200
+                //*d++ = (uint16_t)(((n+x)%100)/99.*65535.);
+                *d++ = (uint16_t)((1. + sin((n+x) * M_PI/50.)*sin((n+y) * M_PI/100.))*32767.);
+            }
+        }
+    }else{
+        OMP_FOR()
+        for(int y = 0; y < ima->h; ++y){
+            uint8_t *d = &((uint8_t*)ima->data)[y*ima->w];
+            for(int x = 0; x < ima->w; ++x){ // sinusoide 100x200
+                //*d++ = (uint16_t)(((n+x)%100)/99.*65535.);
+                *d++ = (uint8_t)((1. + sin((n+x) * M_PI/50.)*sin((n+y) * M_PI/100.))*127.);
+            }
         }
     }
     ++n;
-    ima->bitpix = 16;
+    ima->bitpix = bitpix;
+    return TRUE;
+}
+
+static int camsetbit(int b){
+    bitpix = (b) ? 16 : 8;
+    return TRUE;
+}
+
+static int camgetbp(uint8_t *bp){
+    if(bp) *bp = bitpix;
     return TRUE;
 }
 
@@ -105,7 +127,6 @@ static int camsetexp(float t){
     exptime = t;
     return TRUE;
 }
-
 static int camsetgain(float g){
     gain = g;
     return TRUE;
@@ -261,11 +282,12 @@ __attribute__ ((visibility("default"))) Camera camera = {
     .confio = istub,
     .setio = istub,
     .setframetype = istub,
-    .setbitdepth = istub,
+    .setbitdepth = camsetbit,
     .setfastspeed = istub,
     .setgeometry = camsetgeom,
     .setfanspeed = camfan,
     // getters:
+    .getbitpix = camgetbp,
     .getbrightness = camgetbrig,
     .getModelName = camgetnam,
     .getgain = camgetgain,
diff --git a/FLI_cameras/flifunc.c b/FLI_cameras/flifunc.c
index b58291f..9f0786a 100644
--- a/FLI_cameras/flifunc.c
+++ b/FLI_cameras/flifunc.c
@@ -463,7 +463,8 @@ retn:
 static int fli_capt(IMG *ima){
     if(!ima || !ima->data) return FALSE;
     for(int row = 0; row < ima->h; row++){
-        TRYFUNC(FLIGrabRow, camdev, &ima->data[row * ima->w], ima->w);
+        void *ptr = (void*)((is16bit) ? ((uint16_t*)ima->data) + row * ima->w : ((uint8_t*)ima->data) + row * ima->w);
+        TRYFUNC(FLIGrabRow, camdev, ptr, ima->w);
         if(fli_err) return FALSE;
     }
     ima->bitpix = is16bit ? 16 : 8;
diff --git a/HIKROBOT_cameras/mvsfunc.c b/HIKROBOT_cameras/mvsfunc.c
index 83353dc..483eb62 100644
--- a/HIKROBOT_cameras/mvsfunc.c
+++ b/HIKROBOT_cameras/mvsfunc.c
@@ -445,36 +445,27 @@ retn:
 static int cam_capt(IMG *ima){
     if(!handle || !pdata) return FALSE;
     if(!ima || !ima->data) return FALSE;
-    ;
-    int bytes = ima->h*ima->w * 2, stbytes = stImageInfo.nWidth * stImageInfo.nHeight * 2;
-    if(bytes > pdatasz) bytes = pdatasz;
-    if(bytes != stbytes) WARNX("Different sizes of image buffer & grabbed image");
-    if(stbytes > bytes) bytes = stbytes;
-    DBG("Copy %d bytes (stbytes=%d)", bytes, stbytes);
     MVCC_ENUMVALUE EnumValue;
     TRY(GetEnumValue, "PixelSize", &EnumValue);
     DBG("PixelSize = %u", EnumValue.nCurValue);
     ONOK(){
-//green("pixsize=%d\n", EnumValue.nCurValue);
+        int bytes = ima->h*ima->w * ((7 + ima->bitpix) / 8), stbytes = stImageInfo.nWidth * stImageInfo.nHeight;
         if(EnumValue.nCurValue == 16){
-            memcpy(ima->data, pdata, bytes);
             ima->bitpix = 12;
-            return TRUE;
-        }else if(EnumValue.nCurValue != 8){
+            stbytes *= 2;
+        }else if(EnumValue.nCurValue == 8){
+            ima->bitpix = 8;
+        }else{
             WARNX("Unsupported pixel size");
             return FALSE;
         }
+        if(bytes > pdatasz) bytes = pdatasz;
+        if(bytes != stbytes) WARNX("Different sizes of image buffer & grabbed image");
+        DBG("Copy %d bytes (stbytes=%d)", bytes, stbytes);
+        memcpy(ima->data, pdata, bytes);
+        return TRUE;
     }
-    // transform 8bits to 16
-    DBG("TRANSFORM 8 bit to 16");
-    bytes /= 2;
-    uint8_t *ptr = (uint8_t*) pdata;
-    OMP_FOR()
-    for(int i = 0; i < bytes; ++i){
-        ima->data[i] = (uint16_t) *ptr++;
-    }
-    ima->bitpix = 8;
-    return TRUE;
+    return FALSE;
 }
 
 static int cam_modelname(char *buf, int bufsz){
diff --git a/ZWO_cameras/zwofunc.c b/ZWO_cameras/zwofunc.c
index a4916df..da300fd 100644
--- a/ZWO_cameras/zwofunc.c
+++ b/ZWO_cameras/zwofunc.c
@@ -101,7 +101,8 @@ static int campoll(capture_status *st, float *remain){
         break;
         default: // failed
             DBG("Failed: %d", s);
-            *st = CAPTURE_ABORTED;
+            //*st = CAPTURE_ABORTED;
+             *st = CAPTURE_READY;
     }
     if(remain){
         float diff = exptime - (dtime() - starttime);
@@ -392,6 +393,7 @@ static int setfspd(int spd){ // set fast speed (0..3): 0 - 40% bandwidthovrl, 3
     if(spd > 2) bw = 100.;
     else if(spd > 0) bw += 20. * spd;
     DBG("set BANDWIDTH to %g", bw);
+    zwo_setfloat(1, ASI_HIGH_SPEED_MODE);
     if(ASI_SUCCESS != zwo_setfloat(bw, ASI_BANDWIDTHOVERLOAD)){
         DBG("Can't set");
         return FALSE;
diff --git a/basestructs.h b/basestructs.h
index de934a0..91e8a03 100644
--- a/basestructs.h
+++ b/basestructs.h
@@ -18,13 +18,22 @@
 
 #pragma once
 #include <stdint.h>
+#include <stdlib.h> // for size_t
 
-typedef struct{
-    uint16_t *data;             // image data
+// magic to mark our SHM
+#define SHM_MAGIC   (0xdeadbeef)
+
+// base image parameters - sent by socket and stored in shared memory
+typedef struct __attribute__((packed, aligned(4))){
+    uint32_t MAGICK;            // magick (DEADBEEF) - to mark our shm
+    double timestamp;           // timestamp of image taken
     uint8_t bitpix;             // bits per pixel (8 or 16)
     int w, h;                   // image size
     uint16_t max, min;          // min/max values
     float avr, std;             // statistics
+    size_t bytelen;           // size of image in bytes
+    void *data;                 // pointer to data (next byte after this struct) - only for server
+    /* `data` is uint8_t or uint16_t depending on `bitpix` */
 } IMG;
 
 // format of single frame
@@ -78,12 +87,13 @@ typedef struct{
     int (*confio)(int s);       // configure IO-port
     int (*setio)(int s);        // set IO-port to given state
     int (*setframetype)(int l); // set frametype: 1 - light, 0 - dark
-    int (*setbitdepth)(int h);  // set bit depth: 1 - high, 0 - low
+    int (*setbitdepth)(int h);  // set bit depth : 1 - high (16 bit), 0 - low (8 bit)
     int (*setfastspeed)(int s); // set readout speed: 1 - fast, 0 - low
     // geometry (if TRUE, all args are changed to suitable values)
     int (*setgeometry)(frameformat *fmt); // set geometry in UNBINNED coordinates
     int (*setfanspeed)(fan_speed spd); // set fan speed
     // getters:
+    int (*getbitpix)(uint8_t *bp); // get bit depth in bits per pixel (8, 12, 16 etc)
     int (*getbrightness)(float *b);// get brightnes level
     int (*getModelName)(char *n, int l);// string with model name (l - length of n in bytes)
     int (*getgain)(float *g);   // get gain value
diff --git a/ccdfunc.c b/ccdfunc.c
index 6cc3737..85662e1 100644
--- a/ccdfunc.c
+++ b/ccdfunc.c
@@ -211,7 +211,6 @@ int saveFITS(IMG *img, char **outp){
         }
     }
     int width = img->w, height = img->h;
-    void *data = (void*) img->data;
     long naxes[2] = {width, height};
     double tmpd = 0.0;
     float tmpf = 0.0;
@@ -224,7 +223,9 @@ int saveFITS(IMG *img, char **outp){
     fitserror = 0;
     TRYFITS(fits_create_file, &fp, fnam);
     if(fitserror) goto cloerr;
-    TRYFITS(fits_create_img, fp, USHORT_IMG, 2, naxes);
+    int nbytes = getNbytes(img);
+    if(nbytes == 1) TRYFITS(fits_create_img, fp, BYTE_IMG, 2, naxes);
+    else TRYFITS(fits_create_img, fp, USHORT_IMG, 2, naxes);
     if(fitserror) goto cloerr;
     // ORIGIN / organization responsible for the data
     WRITEKEY(fp, TSTRING, "ORIGIN", "SAO RAS", "organization responsible for the data");
@@ -348,7 +349,8 @@ int saveFITS(IMG *img, char **outp){
     // INSTRUME / Instrument
     if(GP->instrument)
         WRITEKEY(fp, TSTRING, "INSTRUME", GP->instrument, "Instrument");
-    TRYFITS(fits_write_img, fp, TUSHORT, 1, width * height, data);
+    if(nbytes == 1) TRYFITS(fits_write_img, fp, TBYTE, 1, width * height, img->data);
+    else TRYFITS(fits_write_img, fp, TUSHORT, 1, width * height, img->data);
     if(fitserror) goto cloerr;
     TRYFITS(fits_close_file, fp);
 cloerr:
@@ -369,24 +371,23 @@ cloerr:
     return ret;
 }
 
-void calculate_stat(IMG *image){
-    uint64_t Noverld = 0L, size = image->h*image->w;
+static void stat8(IMG *image){
     double sum = 0., sum2 = 0.;
-    uint16_t max = 0, min = 65535;
+    size_t size = image->w * image->h;
+    uint8_t max = 0, min = UINT8_MAX;
+    uint8_t *idata = (uint8_t*)image->data;
 #pragma omp parallel
 {
-    uint16_t maxpriv = 0, minpriv = 65535;
-    uint64_t ovrpriv = 0;
+    uint8_t maxpriv = 0, minpriv = UINT8_MAX;
     double sumpriv = 0., sum2priv = 0.;
     #pragma omp for nowait
-    for(uint64_t i = 0; i < size; ++i){
-        uint16_t val = image->data[i];
+    for(size_t i = 0; i < size; ++i){
+        uint8_t val = idata[i];
         float pv = (float) val;
         sum += pv;
         sum2 += (pv * pv);
         if(max < val) max = val;
         if(min > val) min = val;
-        if(val >= 65530) ovrpriv++;
     }
     #pragma omp critical
     {
@@ -394,7 +395,6 @@ void calculate_stat(IMG *image){
         if(min > minpriv) min = minpriv;
         sum += sumpriv;
         sum2 += sum2priv;
-        Noverld += ovrpriv;
     }
 }
     double sz = (float)size;
@@ -402,10 +402,49 @@ void calculate_stat(IMG *image){
     image->avr = avr;
     image->std = sqrt(fabs(sum2/sz - avr*avr));
     image->max = max; image->min = min;
+}
+static void stat16(IMG *image){
+    double sum = 0., sum2 = 0.;
+    size_t size = image->w * image->h;
+    uint16_t max = 0, min = UINT16_MAX;
+    uint16_t *idata = (uint16_t*)image->data;
+#pragma omp parallel
+{
+    uint16_t maxpriv = 0, minpriv = UINT16_MAX;
+    double sumpriv = 0., sum2priv = 0.;
+    #pragma omp for nowait
+    for(size_t i = 0; i < size; ++i){
+        uint16_t val = idata[i];
+        float pv = (float) val;
+        sum += pv;
+        sum2 += (pv * pv);
+        if(max < val) max = val;
+        if(min > val) min = val;
+    }
+    #pragma omp critical
+    {
+        if(max < maxpriv) max = maxpriv;
+        if(min > minpriv) min = minpriv;
+        sum += sumpriv;
+        sum2 += sum2priv;
+    }
+}
+    double sz = (float)size;
+    double avr = sum/sz;
+    image->avr = avr;
+    image->std = sqrt(fabs(sum2/sz - avr*avr));
+    image->max = max; image->min = min;
+}
+
+
+void calculate_stat(IMG *image){
+    int nbytes = ((7 + image->bitpix) / 8);
+    if(nbytes == 1) stat8(image);
+    else stat16(image);
     if(GP->verbose){
         printf(_("Image stat:\n"));
-        printf("avr = %.1f, std = %.1f, Noverload = %ld\n", avr, image->std, Noverld);
-        printf("max = %u, min = %u, size = %ld\n", max, min, size);
+        printf("avr = %.1f, std = %.1f\n", image->avr, image->std);
+        printf("max = %u, min = %u, size = %d pix\n", image->max, image->min, image->w * image->h);
     }
 }
 
@@ -770,6 +809,7 @@ void ccds(){
     frameformat fmt = camera->geometry;
     int raw_width = fmt.w / GP->hbin,  raw_height = fmt.h / GP->vbin;
 DBG("w=%d, h=%d", raw_width, raw_height);
+    // allocate maximum available memory - for 16bit image
     uint16_t *img = MALLOC(uint16_t, raw_width * raw_height);
     DBG("\n\nAllocated image 2x%dx%d=%d", raw_width, raw_height, 2 * raw_width * raw_height);
     IMG ima = {.data = img, .w = raw_width, .h = raw_height};
@@ -827,6 +867,17 @@ void camstop(){
     }
 }
 
+/**
+ * @brief getNbytes - calculate amount of bytes to store bitpix (1/2)
+ * @param image - image
+ * @return 1 for bitpix<8 or 2
+ */
+int getNbytes(IMG *image){
+    int n = (image->bitpix + 7) / 8;
+    if(n < 1) n = 1;
+    if(n > 2) n = 2;
+    return n;
+}
 
 #ifdef IMAGEVIEW
 #define NFRM        (10)
diff --git a/ccdfunc.h b/ccdfunc.h
index 63eed0e..f3aa659 100644
--- a/ccdfunc.h
+++ b/ccdfunc.h
@@ -31,6 +31,8 @@ int prepare_ccds();
 void ccds();
 void camstop();
 
+int getNbytes(IMG *image);
+
 int startCCD(void **dlh);
 int startWheel(void **dlh);
 int startFocuser(void **dlh);
diff --git a/client.c b/client.c
index f1d201b..758473e 100644
--- a/client.c
+++ b/client.c
@@ -46,7 +46,8 @@ static int xc0,yc0,xc1,yc1; // current format
 #ifdef IMAGEVIEW
 static IMG ima = {0};
 static volatile atomic_int grabno = 0, oldgrabno = 0;
-static int imdatalen = 0, imbufsz = 0;
+static size_t imbufsz = 0;
+static uint8_t *imbuf = NULL;
 #endif
 
 static char *readmsg(int fd){
@@ -100,6 +101,7 @@ static int parseans(char *ans){
         DBG("Got current format: %d,%d,%d,%d", xc0, yc0, xc1, yc1);
         return TRUE;
     }
+    /*
 #ifdef IMAGEVIEW
     else if(0 == strcmp(CMD_IMWIDTH, ans)){
         ima.w = atoi(val);
@@ -113,6 +115,7 @@ static int parseans(char *ans){
         return TRUE;
     }
 #endif
+*/
     //TIMESTAMP("parseans() end");
     return FALSE;
 }
@@ -313,40 +316,56 @@ void init_grab_sock(int sock){
     send_headers(sock);
 }
 
-static void getimage(){
-    FNAME();
-    int sock = controlfd;
-    TIMESTAMP("Get image sizes");
-    SENDCMDW(CMD_IMWIDTH);
-    SENDCMDW(CMD_IMHEIGHT);
-    int imsock = open_socket(FALSE, GP->imageport, TRUE);
-    if(imsock < 0) ERRX("getimage(): can't open image transport socket");
-    if(imbufsz < imdatalen){
-        DBG("Reallocate memory from %d to %d", imbufsz, imdatalen);
-        ima.data = realloc(ima.data, imdatalen);
-        imbufsz = imdatalen;
-    }
+/**
+ * @brief readNbytes - read `N` bytes from descriptor `fd` into buffer *buf
+ * @return false if failed
+ */
+static int readNbytes(int fd, size_t N, uint8_t *buf){
+    size_t got = 0, need = N;
     double t0 = dtime();
-    int got = 0;
-    TIMESTAMP("Start of data read");
-    while(dtime() - t0 < CLIENT_TIMEOUT){
-        if(!canberead(imsock)) continue;
-        uint8_t *target = ((uint8_t*)ima.data)+got;
-        int rd = read(imsock, target, imdatalen - got);
+    while(dtime() - t0 < CLIENT_TIMEOUT && canberead(fd) && need){
+        ssize_t rd = read(fd, buf + got, need);
         if(rd <= 0){
             WARNX("Server disconnected");
             signals(1);
         }
-        got += rd;
-        //DBG("Read %d bytes; total read %d from %d; first: %x %x %x %x", rd, got, imdatalen, target[0],
-        //        target[1], target[2], target[3]);
-        if(got == imdatalen){
-            break;
-        }
+        got += rd; need -= rd;
+    }
+    if(need) return FALSE; // didn't got whole packet
+    return TRUE;
+}
+
+static void getimage(){
+    FNAME();
+    TIMESTAMP("Get image sizes");
+    /*SENDCMDW(CMD_IMWIDTH);
+    SENDCMDW(CMD_IMHEIGHT);*/
+    int imsock = open_socket(FALSE, GP->imageport, TRUE);
+    if(imsock < 0) ERRX("getimage(): can't open image transport socket");
+    // get image size
+    if(!readNbytes(imsock, sizeof(IMG), (uint8_t*)&ima)){
+        WARNX("Can't read image header");
+        goto eofg;
+    }
+    if(ima.bytelen < 1){
+        WARNX("Wrong image size");
+        goto eofg;
+    }
+    if(imbufsz < ima.bytelen){
+        size_t newsz = 1024 * (1 + ima.bytelen / 1024);
+        DBG("Reallocate memory from %zd to %zd", imbufsz, newsz);
+        imbufsz = newsz;
+        imbuf = realloc(imbuf, imbufsz);
+    }
+    ima.data = imbuf; // renew this value each time after getting `ima` from server
+    TIMESTAMP("Start of data read");
+    if(!readNbytes(imsock, ima.bytelen, imbuf)){
+        WARNX("Can't read image data");
+        goto eofg;
     }
-    if(dtime() - t0 > CLIENT_TIMEOUT) WARNX("Timeout, image didn't received");
     TIMESTAMP("Got image");
     ++grabno;
+eofg:
     close(imsock);
 }
 
diff --git a/cmdlnopts.c b/cmdlnopts.c
index 21e704f..fcbdd7b 100644
--- a/cmdlnopts.c
+++ b/cmdlnopts.c
@@ -30,6 +30,7 @@ static glob_pars  G = {
     .brightness = NAN, .gain = NAN,
     .setwheel = -1,
     .fanspeed = -1,
+    .shmkey = 7777777
 };
 
 /*
@@ -102,6 +103,8 @@ myoption cmdlnopts[] = {
     {"viewer",  NO_ARGS,    &G.viewer,1,    arg_none,   NULL,               N_("passive viewer (only get last images)")},
     {"restart", NO_ARGS,    &G.restart,1,   arg_none,   NULL,               N_("restart image server")},
 
+    {"shmkey", NEED_ARG,    NULL,   'k',    arg_int,    APTR(&G.shmkey),    N_("shared memory (with image data) key (default: 7777777")},
+
 #ifdef IMAGEVIEW
     {"display", NO_ARGS,    NULL,   'D',    arg_int,   APTR(&G.showimage),  N_("Display image in OpenGL window")},
 #endif
diff --git a/cmdlnopts.h b/cmdlnopts.h
index 122a5da..25a477d 100644
--- a/cmdlnopts.h
+++ b/cmdlnopts.h
@@ -69,6 +69,7 @@ typedef struct{
     int verbose;        // each '-V' increases it
     int rewrite;        // rewrite file
     int showimage;      // show image preview
+    int shmkey;         // shared memory (with image data) key
     float gain;         // gain level (only for CMOS)
     float brightness;   // brightness (only for CMOS)
     double exptime;     // time of exposition in seconds
diff --git a/imageview.c b/imageview.c
index 8eb4ae6..005b9d3 100644
--- a/imageview.c
+++ b/imageview.c
@@ -427,6 +427,7 @@ static void roll_colorfun(){
     if(t == COLORFN_MAX) t = COLORFN_BWLINEAR;
     change_colorfun(t);
 }
+
 /*
 no omp
 histo: 0.000675201s
@@ -444,7 +445,7 @@ result: 0.0014689s
  * @param w,h      - image width and height
  * @return data allocated here
  */
-static uint8_t *equalize(uint16_t *ori, int w, int h){
+static uint8_t *equalize(IMG *img, int w, int h){
     uint8_t *retn = MALLOC(uint8_t, w*h);
     double orig_hysto[0x10000] = {0.}; // original hystogram
     uint8_t eq_levls[0x10000] = {0};   // levels to convert: newpix = eq_levls[oldpix]
@@ -464,19 +465,39 @@ static uint8_t *equalize(uint16_t *ori, int w, int h){
         for(int i = 0; i < 0x10000; ++i) orig_hysto[i] += histogram_private[i];
     }
 }*/
-    for(int i = 0; i < s; ++i){
-        ++orig_hysto[ori[i]];
+    int bytes = getNbytes(img);
+
+    if(bytes == 1){
+        uint8_t *data = (uint8_t*) img->data;
+        for(int i = 0; i < s; ++i){
+            ++orig_hysto[data[i]];
+        }
+    }else{
+        uint16_t *data = (uint16_t*) img->data;
+        for(int i = 0; i < s; ++i){
+            ++orig_hysto[data[i]];
+        }
     }
+
 //WARNX("histo: %gs", dtime()-t0);
+    int max = (bytes == 1) ? 0xff : 0xffff;
     double part = (double)(s + 1) / 0x100, N = 0.;
-    for(int i = 0; i <= 0xffff; ++i){
+    for(int i = 0; i <= max; ++i){
         N += orig_hysto[i];
         eq_levls[i] = (uint8_t)(N/part);
     }
 //WARNX("equal: %gs", dtime()-t0);
     //OMP_FOR() -- takes the same time!
-    for(int i = 0; i < s; ++i){
-        retn[i] = eq_levls[ori[i]];
+    if(bytes == 1){
+        uint8_t *data = (uint8_t*) img->data;
+        for(int i = 0; i < s; ++i){
+            retn[i] = eq_levls[data[i]];
+        }
+    }else{
+        uint16_t *data = (uint16_t*) img->data;
+        for(int i = 0; i < s; ++i){
+            retn[i] = eq_levls[data[i]];
+        }
     }
 //WARNX("result: %gs", dtime()-t0);
     return retn;
@@ -493,20 +514,42 @@ cuts: 0.00188208s
 */
 
 // count image cuts as [median-sigma median+5sigma]
-static uint8_t *mkcuts(uint16_t *ori, int w, int h){
+static uint8_t *mkcuts(IMG *img, int w, int h){
     uint8_t *retn = MALLOC(uint8_t, w*h);
     int orig_hysto[0x10000] = {0.}; // original hystogram
     int s = w*h;
     double sum = 0., sum2 = 0.;
-//double t0 = dtime();
+    int bytes = getNbytes(img);
+    if(bytes == 1){
+        uint8_t *data = (uint8_t*) img->data;
+#pragma omp parallel
+{
+    size_t histogram_private[0x100] = {0};
+    double sm = 0., sm2 = 0.;
+    #pragma omp for nowait
+    for(int i = 0; i < s; ++i){
+        ++histogram_private[data[i]];
+        double b = data[i];
+        sm += b;
+        sm2 += b*b;
+    }
+    #pragma omp critical
+    {
+        for(int i = 0; i < 0x100; ++i) orig_hysto[i] += histogram_private[i];
+        sum += sm;
+        sum2 += sm2;
+    }
+}
+    }else{
+        uint16_t *data = (uint16_t*) img->data;
 #pragma omp parallel
 {
     size_t histogram_private[0x10000] = {0};
     double sm = 0., sm2 = 0.;
     #pragma omp for nowait
     for(int i = 0; i < s; ++i){
-        ++histogram_private[ori[i]];
-        double b = ori[i];
+        ++histogram_private[data[i]];
+        double b = data[i];
         sm += b;
         sm2 += b*b;
     }
@@ -517,36 +560,42 @@ static uint8_t *mkcuts(uint16_t *ori, int w, int h){
         sum2 += sm2;
     }
 }
-/*
-    for(int i = 0; i < s; ++i){
-        double b = ori[i];
-        ++orig_hysto[ori[i]];
-        sum += b;
-        sum2 += b*b;
     }
-*/
+
 //WARNX("histo: %gs", dtime()-t0);
     // get median level
-    int counts = s/2, median = 0;
-    for(; median < 0xffff; ++median){
+    int counts = s/2, median = 0, max = (bytes == 1) ? 0xff : 0xffff;
+    for(; median < max; ++median){
         if((counts -= orig_hysto[median]) < 0) break;
     }
     sum /= s;
     double sigma = sqrt(sum2/s - sum*sum);
     int low = median - sigma, high = median + 5.*sigma;
     if(low < 0) low = 0;
-    if(high > 0xffff) high = 0xffff;
+    if(high > max) high = max;
     double A = 255./(high - low);
     DBG("Got: sigma=%.1f, low=%d, high=%d, A=%g", sigma, low, high, A);
     // now we can recalculate values: new = (old - low)*A
 //WARNX("stat: %gs", dtime()-t0);
 // DEBUG: 2ms without OMP; 0.7ms with
-    OMP_FOR()
-    for(int i = 0; i < s; ++i){
-        uint16_t old = ori[i];
-        if(old > high){ retn[i] = 255; continue; }
-        else if(old < low){ retn[i] = 0; continue; }
-        retn[i] = (uint8_t)(A*(old - low));
+    if(bytes == 1){
+        uint8_t *data = (uint8_t*) img->data;
+        OMP_FOR()
+        for(int i = 0; i < s; ++i){
+            uint16_t old = data[i];
+            if(old > high){ retn[i] = 255; continue; }
+            else if(old < low){ retn[i] = 0; continue; }
+            retn[i] = (uint8_t)(A*(old - low));
+        }
+    }else{
+        uint16_t *data = (uint16_t*) img->data;
+        OMP_FOR()
+        for(int i = 0; i < s; ++i){
+            uint16_t old = data[i];
+            if(old > high){ retn[i] = 255; continue; }
+            else if(old < low){ retn[i] = 0; continue; }
+            retn[i] = (uint8_t)(A*(old - low));
+        }
     }
 //WARNX("cuts: %gs", dtime()-t0);
     return retn;
@@ -569,10 +618,10 @@ static void change_displayed_image(IMG *img){
     uint8_t *newima;
     if(imequalize){
         DBG("equalize");
-        newima = equalize(img->data, w, h);
+        newima = equalize(img, w, h);
     }else{
         DBG("cuts");
-        newima = mkcuts(img->data, w, h);
+        newima = mkcuts(img, w, h);
     }
     GLubyte *dst = im->rawdata;
 //double t0 = dtime();
diff --git a/locale/ru/LC_MESSAGES/ccd_capture.mo b/locale/ru/LC_MESSAGES/ccd_capture.mo
index e920416..610c50f 100644
Binary files a/locale/ru/LC_MESSAGES/ccd_capture.mo and b/locale/ru/LC_MESSAGES/ccd_capture.mo differ
diff --git a/locale/ru/messages.po b/locale/ru/messages.po
index 8e6c950..048947b 100644
--- a/locale/ru/messages.po
+++ b/locale/ru/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-05-31 16:14+0300\n"
+"POT-Creation-Date: 2023-12-14 16:53+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,235 +17,239 @@ msgstr ""
 "Content-Type: text/plain; charset=koi8-r\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: cmdlnopts.c:40
+#: cmdlnopts.c:41
 msgid "common device plugin (e.g devfli.so)"
 msgstr ""
 
-#: cmdlnopts.c:41
+#: cmdlnopts.c:42
 msgid "camera device plugin (e.g. devfli.so)"
 msgstr ""
 
-#: cmdlnopts.c:42
+#: cmdlnopts.c:43
 msgid "focuser device plugin (e.g. devzwo.so)"
 msgstr ""
 
-#: cmdlnopts.c:43
+#: cmdlnopts.c:44
 msgid "wheel device plugin (e.g. devdummy.so)"
 msgstr ""
 
-#: cmdlnopts.c:44
+#: cmdlnopts.c:45
 msgid "list connected devices"
 msgstr ""
 
-#: cmdlnopts.c:45
+#: cmdlnopts.c:46
 msgid "camera device number (if many: 0, 1, 2 etc)"
 msgstr ""
 
-#: cmdlnopts.c:46
+#: cmdlnopts.c:47
 msgid "filter wheel device number (if many: 0, 1, 2 etc)"
 msgstr ""
 
-#: cmdlnopts.c:47
+#: cmdlnopts.c:48
 msgid "focuser device number (if many: 0, 1, 2 etc)"
 msgstr ""
 
-#: cmdlnopts.c:48
+#: cmdlnopts.c:49
 msgid "show this help"
 msgstr ""
 
-#: cmdlnopts.c:49
+#: cmdlnopts.c:50
 msgid "rewrite output file if exists"
 msgstr ""
 
-#: cmdlnopts.c:50
+#: cmdlnopts.c:51
 msgid "verbose level (-V - messages, -VV - debug, -VVV - all shit)"
 msgstr ""
 
-#: cmdlnopts.c:51
+#: cmdlnopts.c:52
 msgid "not open shutter, when exposing (\"dark frames\")"
 msgstr ""
 
-#: cmdlnopts.c:52
+#: cmdlnopts.c:53
 msgid "run in 8-bit mode"
 msgstr ""
 
-#: cmdlnopts.c:53
+#: cmdlnopts.c:54
 msgid "fast readout mode"
 msgstr ""
 
-#: cmdlnopts.c:54
+#: cmdlnopts.c:55
 msgid "set CCD temperature to given value (degr C)"
 msgstr ""
 
-#: cmdlnopts.c:55
+#: cmdlnopts.c:56
 msgid "set fan speed (0 - off, 1 - low, 2 - high)"
 msgstr ""
 
-#: cmdlnopts.c:57
+#: cmdlnopts.c:58
 msgid "program author"
 msgstr ""
 
-#: cmdlnopts.c:58
+#: cmdlnopts.c:59
 msgid "object type (neon, object, flat etc)"
 msgstr ""
 
-#: cmdlnopts.c:59
+#: cmdlnopts.c:60
 msgid "instrument name"
 msgstr ""
 
-#: cmdlnopts.c:60
+#: cmdlnopts.c:61
 msgid "object name"
 msgstr ""
 
-#: cmdlnopts.c:61
+#: cmdlnopts.c:62
 msgid "observers' names"
 msgstr ""
 
-#: cmdlnopts.c:62
+#: cmdlnopts.c:63
 msgid "observing program name"
 msgstr ""
 
-#: cmdlnopts.c:63
+#: cmdlnopts.c:64
 msgid "add records to header from given file[s]"
 msgstr ""
 
-#: cmdlnopts.c:64
+#: cmdlnopts.c:65
 msgid "output file name"
 msgstr ""
 
-#: cmdlnopts.c:65
+#: cmdlnopts.c:66
 msgid "wait while exposition ends"
 msgstr ""
 
-#: cmdlnopts.c:67
+#: cmdlnopts.c:68
 msgid "N flushes before exposing (default: 1)"
 msgstr ""
 
-#: cmdlnopts.c:68
+#: cmdlnopts.c:69
 msgid "horizontal binning to N pixels"
 msgstr ""
 
-#: cmdlnopts.c:69
+#: cmdlnopts.c:70
 msgid "vertical binning to N pixels"
 msgstr ""
 
-#: cmdlnopts.c:70
+#: cmdlnopts.c:71
 msgid "make series of N frames"
 msgstr ""
 
-#: cmdlnopts.c:71
+#: cmdlnopts.c:72
 msgid "make pause for N seconds between expositions"
 msgstr ""
 
-#: cmdlnopts.c:72
+#: cmdlnopts.c:73
 msgid "set exposure time to given value (seconds!)"
 msgstr ""
 
-#: cmdlnopts.c:73
+#: cmdlnopts.c:74
 msgid "cancel current exposition"
 msgstr ""
 
-#: cmdlnopts.c:74
+#: cmdlnopts.c:75
 msgid ""
 "absolute (not divided by binning!) frame X0 coordinate (-1 - all with "
 "overscan)"
 msgstr ""
 
-#: cmdlnopts.c:75
+#: cmdlnopts.c:76
 msgid "absolute frame Y0 coordinate (-1 - all with overscan)"
 msgstr ""
 
-#: cmdlnopts.c:76
+#: cmdlnopts.c:77
 msgid "absolute frame X1 coordinate (-1 - all with overscan)"
 msgstr ""
 
-#: cmdlnopts.c:77
+#: cmdlnopts.c:78
 msgid "absolute frame Y1 coordinate (-1 - all with overscan)"
 msgstr ""
 
-#: cmdlnopts.c:79
+#: cmdlnopts.c:80
 msgid "open shutter"
 msgstr ""
 
-#: cmdlnopts.c:80
+#: cmdlnopts.c:81
 msgid "close shutter"
 msgstr ""
 
-#: cmdlnopts.c:81
+#: cmdlnopts.c:82
 msgid "run exposition on LOW @ pin5 I/O port"
 msgstr ""
 
-#: cmdlnopts.c:82
+#: cmdlnopts.c:83
 msgid "run exposition on HIGH @ pin5 I/O port"
 msgstr ""
 
-#: cmdlnopts.c:83
+#: cmdlnopts.c:84
 msgid "get value of I/O port pins"
 msgstr ""
 
-#: cmdlnopts.c:84
+#: cmdlnopts.c:85
 msgid "move stepper motor asynchronous"
 msgstr ""
 
-#: cmdlnopts.c:86
+#: cmdlnopts.c:87
 msgid "set I/O port pins to given value (decimal number, pin1 is LSB)"
 msgstr ""
 
-#: cmdlnopts.c:87
+#: cmdlnopts.c:88
 msgid ""
 "configure I/O port pins to given value (decimal number, pin1 is LSB, 1 == "
 "output, 0 == input)"
 msgstr ""
 
-#: cmdlnopts.c:89
+#: cmdlnopts.c:90
 msgid "move focuser to absolute position, mm"
 msgstr ""
 
-#: cmdlnopts.c:90
+#: cmdlnopts.c:91
 msgid "move focuser to relative position, mm (only for standalone)"
 msgstr ""
 
-#: cmdlnopts.c:92
+#: cmdlnopts.c:93
 msgid "set wheel position"
 msgstr ""
 
-#: cmdlnopts.c:94
+#: cmdlnopts.c:95
 msgid "CMOS gain level"
 msgstr ""
 
-#: cmdlnopts.c:95
+#: cmdlnopts.c:96
 msgid "CMOS brightness level"
 msgstr ""
 
-#: cmdlnopts.c:97
+#: cmdlnopts.c:98
 msgid "logging file name (if run as server)"
 msgstr ""
 
-#: cmdlnopts.c:98
+#: cmdlnopts.c:99
 msgid "UNIX socket name"
 msgstr ""
 
-#: cmdlnopts.c:99
+#: cmdlnopts.c:100
 msgid "local INET socket port"
 msgstr ""
 
-#: cmdlnopts.c:100
+#: cmdlnopts.c:101
 msgid "local INET socket port to send/receive images"
 msgstr ""
 
-#: cmdlnopts.c:101
+#: cmdlnopts.c:102
 msgid "run as client"
 msgstr ""
 
-#: cmdlnopts.c:102
+#: cmdlnopts.c:103
 msgid "passive viewer (only get last images)"
 msgstr ""
 
-#: cmdlnopts.c:103
+#: cmdlnopts.c:104
 msgid "restart image server"
 msgstr ""
 
 #: cmdlnopts.c:106
+msgid "shared memory (with image data) key (default: 7777777"
+msgstr ""
+
+#: cmdlnopts.c:109
 msgid "Display image in OpenGL window"
 msgstr ""
 
@@ -279,291 +283,291 @@ msgstr ""
 msgid "Can't save file with prefix %s"
 msgstr ""
 
-#: ccdfunc.c:357
+#: ccdfunc.c:359
 #, c-format
 msgid "File saved as '%s'"
 msgstr ""
 
-#: ccdfunc.c:366
+#: ccdfunc.c:368
 msgid "Error saving file"
 msgstr ""
 
-#: ccdfunc.c:406
+#: ccdfunc.c:445
 #, c-format
 msgid "Image stat:\n"
 msgstr ""
 
-#: ccdfunc.c:414
+#: ccdfunc.c:453
 msgid "Focuser device not pointed"
 msgstr ""
 
-#: ccdfunc.c:421
+#: ccdfunc.c:460
 msgid "No focusers found"
 msgstr ""
 
-#: ccdfunc.c:452
-#, c-format
-msgid "Found %d focusers, you point number %d"
-msgstr ""
-
-#: ccdfunc.c:456
-msgid "Can't set active focuser number"
-msgstr ""
-
-#: ccdfunc.c:470
-msgid "Can't get focuser limit positions"
-msgstr ""
-
-#: ccdfunc.c:477
-msgid "Can't get current focuser position"
-msgstr ""
-
 #: ccdfunc.c:491
 #, c-format
-msgid "Can't set position %g: out of limits [%g, %g]"
+msgid "Found %d focusers, you point number %d"
 msgstr ""
 
 #: ccdfunc.c:495
+msgid "Can't set active focuser number"
+msgstr ""
+
+#: ccdfunc.c:509
+msgid "Can't get focuser limit positions"
+msgstr ""
+
+#: ccdfunc.c:516
+msgid "Can't get current focuser position"
+msgstr ""
+
+#: ccdfunc.c:530
+#, c-format
+msgid "Can't set position %g: out of limits [%g, %g]"
+msgstr ""
+
+#: ccdfunc.c:534
 msgid "Can't home focuser"
 msgstr ""
 
-#: ccdfunc.c:497
+#: ccdfunc.c:536
 #, c-format
 msgid "Can't set position %g"
 msgstr ""
 
-#: ccdfunc.c:505
+#: ccdfunc.c:544
 msgid "Wheel device not pointed"
 msgstr ""
 
-#: ccdfunc.c:512
+#: ccdfunc.c:551
 msgid "No wheels found"
 msgstr ""
 
-#: ccdfunc.c:543
+#: ccdfunc.c:582
 #, c-format
 msgid "Found %d wheels, you point number %d"
 msgstr ""
 
-#: ccdfunc.c:547
+#: ccdfunc.c:586
 msgid "Can't set active wheel number"
 msgstr ""
 
-#: ccdfunc.c:563
+#: ccdfunc.c:602
 msgid "Can't get max wheel position"
 msgstr ""
 
-#: ccdfunc.c:570
+#: ccdfunc.c:609
 #, c-format
 msgid "Wheel position should be from 0 to %d"
 msgstr ""
 
-#: ccdfunc.c:574
+#: ccdfunc.c:613
 #, c-format
 msgid "Can't set wheel position %d"
 msgstr ""
 
-#: ccdfunc.c:591
+#: ccdfunc.c:630
 #, c-format
 msgid "%.1f seconds till exposition ends"
 msgstr ""
 
-#: ccdfunc.c:606
+#: ccdfunc.c:645
 msgid "Camera device not pointed"
 msgstr ""
 
-#: ccdfunc.c:613 ccdfunc.c:614
+#: ccdfunc.c:652 ccdfunc.c:653
 msgid "No cameras found"
 msgstr ""
 
-#: ccdfunc.c:644
+#: ccdfunc.c:683
 #, c-format
 msgid "Found %d cameras, you point number %d"
 msgstr ""
 
-#: ccdfunc.c:648
+#: ccdfunc.c:687
 msgid "Can't set active camera number"
 msgstr ""
 
-#: ccdfunc.c:654
+#: ccdfunc.c:693
 msgid "Can't set fan speed"
 msgstr ""
 
-#: ccdfunc.c:655
+#: ccdfunc.c:694
 #, c-format
 msgid "Set fan speed to %d"
 msgstr ""
 
-#: ccdfunc.c:660
+#: ccdfunc.c:699
 #, c-format
 msgid "Camera model: %s"
 msgstr ""
 
-#: ccdfunc.c:661
+#: ccdfunc.c:700
 #, c-format
 msgid "Pixel size: %g x %g"
 msgstr ""
 
-#: ccdfunc.c:667
+#: ccdfunc.c:706
 #, c-format
 msgid "Full array: %s"
 msgstr ""
 
-#: ccdfunc.c:670
+#: ccdfunc.c:709
 #, c-format
 msgid "Field of view: %s"
 msgstr ""
 
-#: ccdfunc.c:673
+#: ccdfunc.c:712
 #, c-format
 msgid "Current format: %s"
 msgstr ""
 
-#: ccdfunc.c:676
+#: ccdfunc.c:715
 #, c-format
 msgid "Can't set T to %g degC"
 msgstr ""
 
-#: ccdfunc.c:684
+#: ccdfunc.c:723
 #, c-format
 msgid "Shutter command: %s\n"
 msgstr ""
 
-#: ccdfunc.c:686
+#: ccdfunc.c:725
 #, c-format
 msgid "Can't run shutter command %s (unsupported?)"
 msgstr ""
 
 #. "Попытка сконфигурировать порт I/O как %d\n"
-#: ccdfunc.c:690
+#: ccdfunc.c:729
 #, c-format
 msgid "Try to configure I/O port as %d"
 msgstr ""
 
-#: ccdfunc.c:692
+#: ccdfunc.c:731
 msgid "Can't configure (unsupported?)"
 msgstr ""
 
-#: ccdfunc.c:699
+#: ccdfunc.c:738
 msgid "Can't get IOport state (unsupported?)"
 msgstr ""
 
 #. "Попытка записи %d в порт I/O\n"
-#: ccdfunc.c:703
+#: ccdfunc.c:742
 #, c-format
 msgid "Try to write %d to I/O port"
 msgstr ""
 
-#: ccdfunc.c:705
+#: ccdfunc.c:744
 msgid "Can't set IOport"
 msgstr ""
 
-#: ccdfunc.c:712
+#: ccdfunc.c:751
 #, c-format
 msgid "Set gain to %g"
 msgstr ""
 
-#: ccdfunc.c:713
+#: ccdfunc.c:752
 #, c-format
 msgid "Can't set gain to %g"
 msgstr ""
 
-#: ccdfunc.c:718
+#: ccdfunc.c:757
 #, c-format
 msgid "Set brightness to %g"
 msgstr ""
 
-#: ccdfunc.c:719
+#: ccdfunc.c:758
 #, c-format
 msgid "Can't set brightness to %g"
 msgstr ""
 
-#: ccdfunc.c:725 server.c:251
+#: ccdfunc.c:764 server.c:312
 #, c-format
 msgid "Can't set binning %dx%d"
 msgstr ""
 
-#: ccdfunc.c:737 server.c:252
+#: ccdfunc.c:776 server.c:313
 msgid "Can't set given geometry"
 msgstr ""
 
-#: ccdfunc.c:741
+#: ccdfunc.c:780
 #, c-format
 msgid "Can't set %d flushes"
 msgstr ""
 
-#: ccdfunc.c:745
+#: ccdfunc.c:784
 #, c-format
 msgid "Can't set exposure time to %f seconds"
 msgstr ""
 
-#: ccdfunc.c:748
+#: ccdfunc.c:787
 msgid "Can't change frame type"
 msgstr ""
 
-#: ccdfunc.c:751
+#: ccdfunc.c:790
 msgid "Can't set bit depth"
 msgstr ""
 
-#: ccdfunc.c:753
+#: ccdfunc.c:792
 msgid "Can't set readout speed"
 msgstr ""
 
-#: ccdfunc.c:754
+#: ccdfunc.c:793
 #, c-format
 msgid "Readout mode: %s"
 msgstr ""
 
-#: ccdfunc.c:755
+#: ccdfunc.c:794
 msgid "Only show statistics"
 msgstr ""
 
 #. GET binning should be AFTER setgeometry!
-#: ccdfunc.c:757
+#: ccdfunc.c:796
 msgid "Can't get current binning"
 msgstr ""
 
 #. Захват кадра %d\n
-#: ccdfunc.c:781
+#: ccdfunc.c:821
 #, c-format
 msgid "Capture frame %d"
 msgstr ""
 
-#: ccdfunc.c:783 ccdfunc.c:857 server.c:137
+#: ccdfunc.c:823 ccdfunc.c:908 server.c:198
 msgid "Can't start exposition"
 msgstr ""
 
-#: ccdfunc.c:788
+#: ccdfunc.c:828
 msgid "Can't capture image"
 msgstr ""
 
-#: ccdfunc.c:791
+#: ccdfunc.c:831
 msgid "Read grabbed image"
 msgstr ""
 
-#: ccdfunc.c:795 ccdfunc.c:870
+#: ccdfunc.c:835 ccdfunc.c:921
 msgid "Can't grab image"
 msgstr ""
 
 #. %d секунд до окончания паузы\n
-#: ccdfunc.c:807 client.c:288
+#: ccdfunc.c:847 client.c:291
 #, c-format
 msgid "%d seconds till pause ends\n"
 msgstr ""
 
-#: ccdfunc.c:868
+#: ccdfunc.c:919
 msgid "Some error when capture"
 msgstr ""
 
-#: server.c:185
+#: server.c:246
 msgid "No camera device"
 msgstr ""
 
-#: client.c:275
+#: client.c:278
 msgid "Can't make exposition"
 msgstr ""
 
-#: client.c:304
+#: client.c:307
 msgid "Server timeout"
 msgstr ""
 
@@ -580,19 +584,19 @@ msgstr ""
 msgid "Histogram conversion: %s"
 msgstr ""
 
-#: imageview.c:640
+#: imageview.c:689
 msgid "Can't open OpenGL window, image preview will be inaccessible"
 msgstr ""
 
-#: imageview.c:682
+#: imageview.c:731
 #, c-format
 msgid "Equalization of histogram: %s"
 msgstr ""
 
-#: imageview.c:682
+#: imageview.c:731
 msgid "on"
 msgstr ""
 
-#: imageview.c:682
+#: imageview.c:731
 msgid "off"
 msgstr ""
diff --git a/locale/ru/ru.po b/locale/ru/ru.po
index 9f8b9e1..d5dc058 100644
--- a/locale/ru/ru.po
+++ b/locale/ru/ru.po
@@ -7,7 +7,7 @@
 msgid   ""
 msgstr  "Project-Id-Version: PACKAGE VERSION\n"
         "Report-Msgid-Bugs-To: \n"
-        "POT-Creation-Date: 2023-05-31 16:14+0300\n"
+        "POT-Creation-Date: 2023-12-14 16:52+0300\n"
         "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
         "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
         "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -16,13 +16,13 @@ msgstr  "Project-Id-Version: PACKAGE VERSION\n"
         "Content-Type: text/plain; charset=koi8-r\n"
         "Content-Transfer-Encoding: 8bit\n"
 
-#: ccdfunc.c:591
+#: ccdfunc.c:630
 #, c-format
 msgid   "%.1f seconds till exposition ends"
 msgstr  "%.1f ������ �� ��������� ����������"
 
 #. %d секунд до окончания паузы\n
-#: ccdfunc.c:807 client.c:288
+#: ccdfunc.c:847 client.c:291
 #, c-format
 msgid   "%d seconds till pause ends\n"
 msgstr  "%d ������ �� ��������� �����\n"
@@ -31,15 +31,15 @@ msgstr  "%d 
 msgid   "Already initialized!"
 msgstr  "��� ����������������!"
 
-#: cmdlnopts.c:95
+#: cmdlnopts.c:96
 msgid   "CMOS brightness level"
 msgstr  "������� ������� CMOS"
 
-#: cmdlnopts.c:94
+#: cmdlnopts.c:95
 msgid   "CMOS gain level"
 msgstr  "������� Gain CMOS"
 
-#: ccdfunc.c:606
+#: ccdfunc.c:645
 msgid   "Camera device not pointed"
 msgstr  "���������� ������������� �� ����������"
 
@@ -47,20 +47,20 @@ msgstr  "
 msgid   "Camera device unknown"
 msgstr  "���������� ������������� �� ��������"
 
-#: ccdfunc.c:660
+#: ccdfunc.c:699
 #, c-format
 msgid   "Camera model: %s"
 msgstr  "������ ��������������: %s"
 
-#: ccdfunc.c:788
+#: ccdfunc.c:828
 msgid   "Can't capture image"
 msgstr  "�� ���� ��������� �����������"
 
-#: ccdfunc.c:748
+#: ccdfunc.c:787
 msgid   "Can't change frame type"
 msgstr  "�� ���� �������� ��� �����"
 
-#: ccdfunc.c:692
+#: ccdfunc.c:731
 msgid   "Can't configure (unsupported?)"
 msgstr  "�� ���� ���������������� (����� �� ��������������?)"
 
@@ -84,32 +84,32 @@ msgstr  "
 msgid   "Can't find wheel in plugin %s: %s"
 msgstr  "�� ���� ����� ������ ������ %s: %s"
 
-#: ccdfunc.c:699
+#: ccdfunc.c:738
 msgid   "Can't get IOport state (unsupported?)"
 msgstr  "�� ���� �������� ��������� ����� I/O (�� ��������������?)"
 
 #. GET binning should be AFTER setgeometry!
-#: ccdfunc.c:757
+#: ccdfunc.c:796
 msgid   "Can't get current binning"
 msgstr  "�� ���� �������� ������� �������� ��������"
 
-#: ccdfunc.c:477
+#: ccdfunc.c:516
 msgid   "Can't get current focuser position"
 msgstr  "�� ���� ���������� ������� ������� ��������"
 
-#: ccdfunc.c:470
+#: ccdfunc.c:509
 msgid   "Can't get focuser limit positions"
 msgstr  "�� ���� ���������� ���������� ������� ��������"
 
-#: ccdfunc.c:563
+#: ccdfunc.c:602
 msgid   "Can't get max wheel position"
 msgstr  "�� ���� ���������� ���������� ������� ������"
 
-#: ccdfunc.c:795 ccdfunc.c:870
+#: ccdfunc.c:835 ccdfunc.c:921
 msgid   "Can't grab image"
 msgstr  "�� ���� ��������� �����������"
 
-#: ccdfunc.c:495
+#: ccdfunc.c:534
 msgid   "Can't home focuser"
 msgstr  "�� ���� ���������� ������� � ����"
 
@@ -117,15 +117,15 @@ msgstr  "
 msgid   "Can't init mutex!"
 msgstr  "�� ���� ���������������� �������!"
 
-#: client.c:275
+#: client.c:278
 msgid   "Can't make exposition"
 msgstr  "�� ���� ��������� ����������"
 
-#: imageview.c:640
+#: imageview.c:689
 msgid   "Can't open OpenGL window, image preview will be inaccessible"
 msgstr  "�� ���� ������� ���� OpenGL, ����������� ����� ����������"
 
-#: ccdfunc.c:686
+#: ccdfunc.c:725
 #, c-format
 msgid   "Can't run shutter command %s (unsupported?)"
 msgstr  "�� ���� ��������� ������� ������� %s (�� ��������������?)"
@@ -136,141 +136,141 @@ msgstr  "
 msgid   "Can't save file with prefix %s"
 msgstr  "�� ���� ��������� ���� � ��������� %s"
 
-#: ccdfunc.c:741
+#: ccdfunc.c:780
 #, c-format
 msgid   "Can't set %d flushes"
 msgstr  "�� ���� ���������� %d �������"
 
-#: ccdfunc.c:705
+#: ccdfunc.c:744
 msgid   "Can't set IOport"
 msgstr  "�� ���� �������� �������� ����� I/O"
 
-#: ccdfunc.c:676
+#: ccdfunc.c:715
 #, c-format
 msgid   "Can't set T to %g degC"
 msgstr  "�� ���� ���������� ����������� � %g �����"
 
-#: ccdfunc.c:648
+#: ccdfunc.c:687
 msgid   "Can't set active camera number"
 msgstr  "�� ���� ���������� ����� �������� ������"
 
-#: ccdfunc.c:456
+#: ccdfunc.c:495
 msgid   "Can't set active focuser number"
 msgstr  "�� ���� ���������� ����� ��������� ��������"
 
-#: ccdfunc.c:547
+#: ccdfunc.c:586
 msgid   "Can't set active wheel number"
 msgstr  "�� ���� ���������� ����� ��������� ������"
 
-#: ccdfunc.c:725 server.c:251
+#: ccdfunc.c:764 server.c:312
 #, c-format
 msgid   "Can't set binning %dx%d"
 msgstr  "�� ���� ���������� ������� %dx%d"
 
-#: ccdfunc.c:751
+#: ccdfunc.c:790
 msgid   "Can't set bit depth"
 msgstr  "�� ���� ���������� ����������� ���"
 
-#: ccdfunc.c:719
+#: ccdfunc.c:758
 #, c-format
 msgid   "Can't set brightness to %g"
 msgstr  "�� ���� ���������� ������� � %g"
 
-#: ccdfunc.c:745
+#: ccdfunc.c:784
 #, c-format
 msgid   "Can't set exposure time to %f seconds"
 msgstr  "�� ���� ���������� ���������� � %f ������"
 
-#: ccdfunc.c:654
+#: ccdfunc.c:693
 msgid   "Can't set fan speed"
 msgstr  "�� ���� ���������� �������� ������������"
 
-#: ccdfunc.c:713
+#: ccdfunc.c:752
 #, c-format
 msgid   "Can't set gain to %g"
 msgstr  "�� ���� ���������� Gain � %g"
 
-#: ccdfunc.c:737 server.c:252
+#: ccdfunc.c:776 server.c:313
 msgid   "Can't set given geometry"
 msgstr  "�� ���� ���������� ���������"
 
-#: ccdfunc.c:497
+#: ccdfunc.c:536
 #, c-format
 msgid   "Can't set position %g"
 msgstr  "�� ���� �������� ������� �� %g"
 
-#: ccdfunc.c:491
+#: ccdfunc.c:530
 #, c-format
 msgid   "Can't set position %g: out of limits [%g, %g]"
 msgstr  "�� ���� ���������� ������� %g: ��� �������� [%g, %g]"
 
-#: ccdfunc.c:753
+#: ccdfunc.c:792
 msgid   "Can't set readout speed"
 msgstr  "�� ���� ���������� �������� ����������"
 
-#: ccdfunc.c:574
+#: ccdfunc.c:613
 #, c-format
 msgid   "Can't set wheel position %d"
 msgstr  "�� ���� ���������� ��������� ������ %d"
 
-#: ccdfunc.c:783 ccdfunc.c:857 server.c:137
+#: ccdfunc.c:823 ccdfunc.c:908 server.c:198
 msgid   "Can't start exposition"
 msgstr  "�� ���� ������ ����������"
 
 #. Захват кадра %d\n
-#: ccdfunc.c:781
+#: ccdfunc.c:821
 #, c-format
 msgid   "Capture frame %d"
 msgstr  "������ ����� %d"
 
-#: ccdfunc.c:673
+#: ccdfunc.c:712
 #, c-format
 msgid   "Current format: %s"
 msgstr  ""
 
-#: cmdlnopts.c:106
+#: cmdlnopts.c:109
 msgid   "Display image in OpenGL window"
 msgstr  "����������� ����������� � ���� OpenGL"
 
-#: imageview.c:682
+#: imageview.c:731
 #, c-format
 msgid   "Equalization of histogram: %s"
 msgstr  "����������� �����������: %s"
 
-#: ccdfunc.c:366
+#: ccdfunc.c:368
 msgid   "Error saving file"
 msgstr  "������ ���������� �����"
 
-#: ccdfunc.c:670
+#: ccdfunc.c:709
 #, c-format
 msgid   "Field of view: %s"
 msgstr  "���� ������: %s"
 
-#: ccdfunc.c:357
+#: ccdfunc.c:359
 #, c-format
 msgid   "File saved as '%s'"
 msgstr  "���� �������� ��� '%s'"
 
-#: ccdfunc.c:414
+#: ccdfunc.c:453
 msgid   "Focuser device not pointed"
 msgstr  "���������� �������� �� �������"
 
-#: ccdfunc.c:644
+#: ccdfunc.c:683
 #, c-format
 msgid   "Found %d cameras, you point number %d"
 msgstr  "���������� %d �����, �� ������� %d"
 
-#: ccdfunc.c:452
+#: ccdfunc.c:491
 #, c-format
 msgid   "Found %d focusers, you point number %d"
 msgstr  "���������� %d ���������, �� ������� %d"
 
-#: ccdfunc.c:543
+#: ccdfunc.c:582
 #, c-format
 msgid   "Found %d wheels, you point number %d"
 msgstr  "���������� %d �����, �� ������� %d"
 
-#: ccdfunc.c:667
+#: ccdfunc.c:706
 #, c-format
 msgid   "Full array: %s"
 msgstr  "������ ������: %s"
@@ -280,321 +280,325 @@ msgstr  "
 msgid   "Histogram conversion: %s"
 msgstr  "�������������� �����������: %s"
 
-#: ccdfunc.c:406
+#: ccdfunc.c:445
 #, c-format
 msgid   "Image stat:\n"
 msgstr  "���������� �� �����������: \n"
 
-#: cmdlnopts.c:67
+#: cmdlnopts.c:68
 msgid   "N flushes before exposing (default: 1)"
 msgstr  "N ������������ ����� ����������� (�� ���������: 1)"
 
-#: server.c:185
+#: server.c:246
 msgid   "No camera device"
 msgstr  "�� ������� ���������� ������"
 
-#: ccdfunc.c:613 ccdfunc.c:614
+#: ccdfunc.c:652 ccdfunc.c:653
 msgid   "No cameras found"
 msgstr  "����� �� ����������"
 
-#: ccdfunc.c:421
+#: ccdfunc.c:460
 msgid   "No focusers found"
 msgstr  "��������� �� ����������"
 
-#: ccdfunc.c:512
+#: ccdfunc.c:551
 msgid   "No wheels found"
 msgstr  "������� �� ����������"
 
-#: ccdfunc.c:755
+#: ccdfunc.c:794
 msgid   "Only show statistics"
 msgstr  "������ ���������� ����������"
 
-#: ccdfunc.c:661
+#: ccdfunc.c:700
 #, c-format
 msgid   "Pixel size: %g x %g"
 msgstr  "������ �������: %g x %g"
 
-#: ccdfunc.c:791
+#: ccdfunc.c:831
 msgid   "Read grabbed image"
 msgstr  "���������� �����������"
 
-#: ccdfunc.c:754
+#: ccdfunc.c:793
 #, c-format
 msgid   "Readout mode: %s"
 msgstr  "����� ����������: %s"
 
-#: client.c:304
+#: client.c:307
 msgid   "Server timeout"
 msgstr  "������� �������"
 
-#: ccdfunc.c:718
+#: ccdfunc.c:757
 #, c-format
 msgid   "Set brightness to %g"
 msgstr  "���������� ������� � %g"
 
-#: ccdfunc.c:655
+#: ccdfunc.c:694
 #, c-format
 msgid   "Set fan speed to %d"
 msgstr  "�� ���� ���������� �������� ������������ � %d"
 
-#: ccdfunc.c:712
+#: ccdfunc.c:751
 #, c-format
 msgid   "Set gain to %g"
 msgstr  "���������� Gain � %g"
 
-#: ccdfunc.c:684
+#: ccdfunc.c:723
 #, c-format
 msgid   "Shutter command: %s\n"
 msgstr  "������� �������: %s\n"
 
-#: ccdfunc.c:868
+#: ccdfunc.c:919
 msgid   "Some error when capture"
 msgstr  ""
 
 #. "Попытка сконфигурировать порт I/O как %d\n"
-#: ccdfunc.c:690
+#: ccdfunc.c:729
 #, c-format
 msgid   "Try to configure I/O port as %d"
 msgstr  "������� ���������������� ���� I/O ��� %d"
 
 #. "Попытка записи %d в порт I/O\n"
-#: ccdfunc.c:703
+#: ccdfunc.c:742
 #, c-format
 msgid   "Try to write %d to I/O port"
 msgstr  "������� ������ %d � ���� I/O"
 
-#: cmdlnopts.c:98
+#: cmdlnopts.c:99
 msgid   "UNIX socket name"
 msgstr  "��� UNIX-������"
 
-#: ccdfunc.c:505
+#: ccdfunc.c:544
 msgid   "Wheel device not pointed"
 msgstr  "���������� ������ �� �������"
 
-#: ccdfunc.c:570
+#: ccdfunc.c:609
 #, c-format
 msgid   "Wheel position should be from 0 to %d"
 msgstr  "������� ������ ������ ���� �� 0 �� %d"
 
-#: cmdlnopts.c:74
+#: cmdlnopts.c:75
 msgid   "absolute (not divided by binning!) frame X0 coordinate (-1 - all "
         "with overscan)"
 msgstr  "���������� (�� �������� �� �������!) ���������� X0 (-1 - ������� "
         "��������)"
 
-#: cmdlnopts.c:76
+#: cmdlnopts.c:77
 msgid   "absolute frame X1 coordinate (-1 - all with overscan)"
 msgstr  "���������� ���������� X1 (-1 - ������� ��������)"
 
-#: cmdlnopts.c:75
+#: cmdlnopts.c:76
 msgid   "absolute frame Y0 coordinate (-1 - all with overscan)"
 msgstr  "���������� ���������� Y0 (-1 - ������� ��������)"
 
-#: cmdlnopts.c:77
+#: cmdlnopts.c:78
 msgid   "absolute frame Y1 coordinate (-1 - all with overscan)"
 msgstr  "���������� ���������� Y1 (-1 - ������� ��������)"
 
-#: cmdlnopts.c:63
+#: cmdlnopts.c:64
 msgid   "add records to header from given file[s]"
 msgstr  "�������� ������ � ����� FITS-����� �� �������� ������"
 
-#: cmdlnopts.c:45
+#: cmdlnopts.c:46
 msgid   "camera device number (if many: 0, 1, 2 etc)"
 msgstr  "����� ���������� ������"
 
-#: cmdlnopts.c:41
+#: cmdlnopts.c:42
 msgid   "camera device plugin (e.g. devfli.so)"
 msgstr  "������ ������ (��������, devfli.so)"
 
-#: cmdlnopts.c:73
+#: cmdlnopts.c:74
 msgid   "cancel current exposition"
 msgstr  "������ ������� ����������"
 
-#: cmdlnopts.c:80
+#: cmdlnopts.c:81
 msgid   "close shutter"
 msgstr  "������� ������"
 
-#: cmdlnopts.c:40
+#: cmdlnopts.c:41
 msgid   "common device plugin (e.g devfli.so)"
 msgstr  "����� ������ ��� ���� ��������� (��������, devfli.so)"
 
-#: cmdlnopts.c:87
+#: cmdlnopts.c:88
 msgid   "configure I/O port pins to given value (decimal number, pin1 is LSB, "
         "1 == output, 0 == input)"
 msgstr  "���������������� ���� I/O � �������� ��������� (���������� �����, "
         "pin1 - ������� ���, 1 - �����, 0 - ����)"
 
-#: cmdlnopts.c:53
+#: cmdlnopts.c:54
 msgid   "fast readout mode"
 msgstr  "������� ����� ����������"
 
-#: cmdlnopts.c:46
+#: cmdlnopts.c:47
 msgid   "filter wheel device number (if many: 0, 1, 2 etc)"
 msgstr  "����� ���������� ������"
 
-#: cmdlnopts.c:47
+#: cmdlnopts.c:48
 msgid   "focuser device number (if many: 0, 1, 2 etc)"
 msgstr  "����� ���������� ��������"
 
-#: cmdlnopts.c:42
+#: cmdlnopts.c:43
 msgid   "focuser device plugin (e.g. devzwo.so)"
 msgstr  "������ �������� (��������, devzwo.so)"
 
-#: cmdlnopts.c:83
+#: cmdlnopts.c:84
 msgid   "get value of I/O port pins"
 msgstr  "�������� �������� ����� I/O"
 
-#: cmdlnopts.c:68
+#: cmdlnopts.c:69
 msgid   "horizontal binning to N pixels"
 msgstr  "�������������� ������� � N ��������"
 
-#: cmdlnopts.c:59
+#: cmdlnopts.c:60
 msgid   "instrument name"
 msgstr  "�������� �������"
 
-#: cmdlnopts.c:44
+#: cmdlnopts.c:45
 msgid   "list connected devices"
 msgstr  "������ ������������ ���������"
 
-#: cmdlnopts.c:99
+#: cmdlnopts.c:100
 msgid   "local INET socket port"
 msgstr  "���� ���������� �������� ������"
 
-#: cmdlnopts.c:100
+#: cmdlnopts.c:101
 #, fuzzy
 msgid   "local INET socket port to send/receive images"
 msgstr  "���� ���������� �������� ������"
 
-#: cmdlnopts.c:97
+#: cmdlnopts.c:98
 msgid   "logging file name (if run as server)"
 msgstr  "��� ����� ������������ (���� ������� ������)"
 
-#: cmdlnopts.c:71
+#: cmdlnopts.c:72
 msgid   "make pause for N seconds between expositions"
 msgstr  "����� � N ������ ����� ������������"
 
-#: cmdlnopts.c:70
+#: cmdlnopts.c:71
 msgid   "make series of N frames"
 msgstr  "������������������ �� N ������"
 
-#: cmdlnopts.c:89
+#: cmdlnopts.c:90
 msgid   "move focuser to absolute position, mm"
 msgstr  "����������� ������� � ���������� ���������, ��"
 
-#: cmdlnopts.c:90
+#: cmdlnopts.c:91
 msgid   "move focuser to relative position, mm (only for standalone)"
 msgstr  "����������� ������� � ������������� ���������, �� (�� ��� ������/"
         "������)"
 
-#: cmdlnopts.c:84
+#: cmdlnopts.c:85
 msgid   "move stepper motor asynchronous"
 msgstr  "����������� �������� �������� ���������"
 
-#: cmdlnopts.c:51
+#: cmdlnopts.c:52
 msgid   "not open shutter, when exposing (\"dark frames\")"
 msgstr  "�� ��������� ������ ��� ���������� (\"��������\")"
 
-#: cmdlnopts.c:60
+#: cmdlnopts.c:61
 msgid   "object name"
 msgstr  "�������� �������"
 
-#: cmdlnopts.c:58
+#: cmdlnopts.c:59
 msgid   "object type (neon, object, flat etc)"
 msgstr  "��� ������� (neon, object, flat � �.�.)"
 
-#: cmdlnopts.c:61
+#: cmdlnopts.c:62
 msgid   "observers' names"
 msgstr  "����� ������������"
 
-#: cmdlnopts.c:62
+#: cmdlnopts.c:63
 msgid   "observing program name"
 msgstr  "�������� ���������"
 
-#: imageview.c:682
+#: imageview.c:731
 msgid   "off"
 msgstr  "����"
 
-#: imageview.c:682
+#: imageview.c:731
 msgid   "on"
 msgstr  "���"
 
-#: cmdlnopts.c:79
+#: cmdlnopts.c:80
 msgid   "open shutter"
 msgstr  "������� ������"
 
-#: cmdlnopts.c:64
+#: cmdlnopts.c:65
 msgid   "output file name"
 msgstr  "��� �����"
 
-#: cmdlnopts.c:102
+#: cmdlnopts.c:103
 msgid   "passive viewer (only get last images)"
 msgstr  ""
 
-#: cmdlnopts.c:57
+#: cmdlnopts.c:58
 msgid   "program author"
 msgstr  "����� ���������"
 
-#: cmdlnopts.c:103
+#: cmdlnopts.c:104
 msgid   "restart image server"
 msgstr  "���������� �������"
 
-#: cmdlnopts.c:49
+#: cmdlnopts.c:50
 msgid   "rewrite output file if exists"
 msgstr  "���������� ��������� �����"
 
-#: cmdlnopts.c:101
+#: cmdlnopts.c:102
 msgid   "run as client"
 msgstr  "��������� ������"
 
-#: cmdlnopts.c:82
+#: cmdlnopts.c:83
 msgid   "run exposition on HIGH @ pin5 I/O port"
 msgstr  ""
 
-#: cmdlnopts.c:81
+#: cmdlnopts.c:82
 msgid   "run exposition on LOW @ pin5 I/O port"
 msgstr  ""
 
-#: cmdlnopts.c:52
+#: cmdlnopts.c:53
 msgid   "run in 8-bit mode"
 msgstr  "8-������ �����"
 
-#: cmdlnopts.c:54
+#: cmdlnopts.c:55
 msgid   "set CCD temperature to given value (degr C)"
 msgstr  "���������� ����������� �������������� (�����)"
 
-#: cmdlnopts.c:86
+#: cmdlnopts.c:87
 msgid   "set I/O port pins to given value (decimal number, pin1 is LSB)"
 msgstr  "���������� ���� I/O (���������� �����, pin1 - ������� ���)"
 
-#: cmdlnopts.c:72
+#: cmdlnopts.c:73
 msgid   "set exposure time to given value (seconds!)"
 msgstr  "���������� ����� ���������� (�������!)"
 
-#: cmdlnopts.c:55
+#: cmdlnopts.c:56
 msgid   "set fan speed (0 - off, 1 - low, 2 - high)"
 msgstr  "���������� �������� ����������� (0 - ����, 1 - ������, 2 - �������)"
 
-#: cmdlnopts.c:92
+#: cmdlnopts.c:93
 msgid   "set wheel position"
 msgstr  "���������� ��������� ������"
 
-#: cmdlnopts.c:48
+#: cmdlnopts.c:106
+msgid   "shared memory (with image data) key (default: 7777777"
+msgstr  ""
+
+#: cmdlnopts.c:49
 msgid   "show this help"
 msgstr  "���������� ��� �������"
 
-#: cmdlnopts.c:50
+#: cmdlnopts.c:51
 msgid   "verbose level (-V - messages, -VV - debug, -VVV - all shit)"
 msgstr  "������� ����������� (-V - ���������, -VV - �������, -VVV - ���)"
 
-#: cmdlnopts.c:69
+#: cmdlnopts.c:70
 msgid   "vertical binning to N pixels"
 msgstr  "������������ ������� � N ��������"
 
-#: cmdlnopts.c:65
+#: cmdlnopts.c:66
 msgid   "wait while exposition ends"
 msgstr  "�����, ���� �� �������� ����������"
 
-#: cmdlnopts.c:43
+#: cmdlnopts.c:44
 msgid   "wheel device plugin (e.g. devdummy.so)"
 msgstr  "������ ���������� ������ (��������, devdummy.so)"
 
diff --git a/server.c b/server.c
index 09df7a2..3ea18b2 100644
--- a/server.c
+++ b/server.c
@@ -22,6 +22,8 @@
 #include <poll.h>
 #include <stdio.h>
 #include <string.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
 #include <sys/socket.h>
 #include <usefull_macros.h>
 
@@ -46,6 +48,9 @@ static float focmaxpos = 0., focminpos = 0.; // focuser extremal positions
 static int wmaxpos = 0.; // wheel max pos
 static float tremain = 0.; // time when capture done
 
+// IPC key for shared memory
+static key_t shmkey = IPC_PRIVATE;
+
 typedef struct{
     const char *key;
     const char *help;
@@ -88,6 +93,7 @@ strpair allcommands[] = {
     { CMD_PROGRAM,      "FITS 'PROG-ID' field" },
     { CMD_RESTART,      "restart server" },
     { CMD_REWRITE,      "rewrite file (if give `filename`, not `filenameprefix`" },
+    { CMD_SHMEMKEY,     "get shared memory key" },
     { CMD_SHUTTER,      "camera shutter's operations" },
     { CMD_CAMTEMPER,    "camera chip temperature" },
     { CMD_TREMAIN,      "time (in seconds) of exposition remained" },
@@ -112,16 +118,71 @@ static void unlock(){
     if(pthread_mutex_unlock(&locmutex)) ERR("Can't unlock mutex");
 }
 
-static IMG ima = {0};
+static IMG *ima = NULL;
+
+/**
+ * @brief getshm - get shared memory segment for image
+ * @param imsize - size of image data (in bytes)
+ * @return
+ */
+static IMG *getshm(key_t key, size_t imsize){
+    size_t shmsize = sizeof(IMG) + imsize;
+    shmsize = 1024 * (1 + shmsize / 1024);
+    DBG("Allocate %zd bytes in shared memory", shmsize);
+    int shmid = -1;
+    int flags = (imsize) ? IPC_CREAT | 0666 : 0;
+    shmid = shmget(key, 0, flags);
+    if(shmid < 0){
+        WARN("Can't get shared memory segment %d", key);
+        return NULL;
+    }
+    if(imsize){ // check if segment exists and its size equal to needs
+        struct shmid_ds buf;
+        if(shmctl(shmid, IPC_STAT, &buf) > -1 && shmsize != buf.shm_segsz){ // remove already existing segment
+            DBG("Need to remove already existing segment");
+            shmctl(shmid, IPC_RMID, NULL);
+        }
+        shmid = shmget(key, shmsize, flags);
+        if(shmid < 0){
+            WARN("Can't create shared memory segment %d", key);
+            return NULL;
+        }
+    }
+    flags = (imsize) ? 0 : SHM_RDONLY; // client opens memory in readonly mode
+    IMG *ptr = shmat(shmid, NULL, flags);
+    if(ptr == (void*)-1){
+        WARN("Can't attach SHM segment %d", key);
+        return NULL;
+    }
+    if(!imsize){
+        if(ptr->MAGICK != SHM_MAGIC){
+            WARNX("Shared memory %d isn't belongs to image server", key);
+            shmdt(ptr);
+            return NULL;
+        }
+        return ptr;
+    }
+    bzero(ptr, sizeof(IMG));
+    ptr->data = (void*)((uint8_t*)ptr + sizeof(IMG));
+    ptr->MAGICK = SHM_MAGIC;
+    shmkey = key;
+    return ptr;
+}
+
 static void fixima(){
     FNAME();
     if(!camera) return;
     int raw_width = curformat.w / GP->hbin,  raw_height = curformat.h / GP->vbin;
-    if(!ima.data) ima.data = MALLOC(uint16_t,  camera->array.h * camera->array.w);
-    if(ima.data && raw_width == ima.w && raw_height == ima.h) return; // all OK
+    // allocate memory for largest possible image
+    if(!ima) ima = getshm(GP->shmkey, camera->array.h * camera->array.w * 2);
+    if(!ima) ERRX("Can't allocate memory for image");
+    if(raw_width == ima->w && raw_height == ima->h) return; // all OK
     DBG("curformat: %dx%d", curformat.w, curformat.h);
-    ima.h = raw_height;
-    ima.w = raw_width;
+    ima->h = raw_height;
+    ima->w = raw_width;
+    if(!camera->getbitpix(&ima->bitpix)) ima->bitpix = 16;
+    if(ima->bitpix < 8 || ima->bitpix > 16) ima->bitpix = 16; // use maximum in any strange cases
+    ima->bytelen = raw_height * raw_width * getNbytes(ima);
     DBG("new image: %dx%d", raw_width, raw_height);
 }
 
@@ -155,19 +216,19 @@ static inline void cameracapturestate(){ // capturing - wait for exposition ends
             TIMESTAMP("Capture ready");
             tremain = 0.;
             // now save frame
-            if(!ima.data) LOGERR("Can't save image: not initialized");
+            if(!ima->data) LOGERR("Can't save image: not initialized");
             else{
                 TIMESTAMP("start capture");
-                if(!camera->capture(&ima)){
+                if(!camera->capture(ima)){
                     LOGERR("Can't capture image");
                     camstate = CAMERA_ERROR;
                     return;
                 }else{
                     if(lastfile){
                         TIMESTAMP("Calc stat");
-                        calculate_stat(&ima);
+                        calculate_stat(ima);
                     }
-                    if(saveFITS(&ima, &lastfile)){
+                    if(saveFITS(ima, &lastfile)){
                         DBG("LAST file name changed");
                     }
                     TIMESTAMP("Image saved");
@@ -287,6 +348,15 @@ static hresult restarthandler(_U_ int fd, _U_ const char *key, _U_ const char *v
 /*******************************************************************************
  *************************** CCD/CMOS handlers *********************************
  ******************************************************************************/
+// image size
+static hresult imsizehandler(int fd, const char *key, _U_ const char *val){
+    char buf[64];
+    // send image width/height in pixels
+    if(0 == strcmp(key, CMD_IMHEIGHT)) snprintf(buf, 63, CMD_IMHEIGHT "=%d", ima->h);
+    else snprintf(buf, 63, CMD_IMWIDTH "=%d", ima->w);
+    if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
+    return RESULT_SILENCE;
+}
 static hresult camlisthandler(int fd, _U_ const char *key, _U_ const char *val){
     char buf[BUFSIZ], modname[256];
     for(int i = 0; i < camera->Ndevices; ++i){
@@ -910,11 +980,11 @@ static hresult helphandler(int fd, _U_ const char *key, _U_ const char *val){
     return RESULT_SILENCE;
 }
 
-static hresult imsizehandler(int fd, const char *key, _U_ const char *val){
+// shared memory key
+static hresult shmemkeyhandler(int fd, _U_ const char *key, _U_ const char *val){
     char buf[64];
-    // send image width/height in pixels
-    if(0 == strcmp(key, CMD_IMHEIGHT)) snprintf(buf, 63, CMD_IMHEIGHT "=%d", ima.h);
-    else snprintf(buf, 63, CMD_IMWIDTH "=%d", ima.w);
+    if(shmkey == IPC_PRIVATE) return RESULT_FAIL;
+    snprintf(buf, 63, CMD_SHMEMKEY "=%d", shmkey);
     if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
     return RESULT_SILENCE;
 }
@@ -971,6 +1041,7 @@ static handleritem items[] = {
     {chkcc,  formathandler, CMD_FRAMEMAX},
     {chkcc,  nflusheshandler, CMD_NFLUSHES},
     {chkcam, expstatehandler, CMD_EXPSTATE},
+    {chktrue,shmemkeyhandler, CMD_SHMEMKEY},
     {chktrue,imsizehandler, CMD_IMWIDTH},
     {chktrue,imsizehandler, CMD_IMHEIGHT},
     {chkcc,  nameprefixhandler, CMD_FILENAMEPREFIX},
@@ -998,6 +1069,17 @@ static handleritem items[] = {
 
 #define CLBUFSZ     BUFSIZ
 
+// send image as raw data
+static void sendimage(int client){
+    if(ima->h < 1 || ima->w < 1) return;
+    senddata(client, ima, sizeof(IMG));
+    senddata(client, ima->data, ima->bytelen);
+    /*void *mem = malloc(ima->bytelen);
+    memcpy(mem, ima->data, ima->bytelen);
+    senddata(client, mem, ima->bytelen);
+    FREE(mem);*/
+}
+
 void server(int sock, int imsock){
     DBG("sockfd=%d, imsockfd=%d", sock, imsock);
     if(sock < 0) ERRX("server(): need at least command socket fd");
@@ -1046,9 +1128,7 @@ void server(int sock, int imsock){
             DBG("client=%d", client);
             if(client > -1){
                 DBG("client fd: %d", client);
-                // send image as raw data w*h*2
-                if(ima.data && ima.h > 0 && ima.w > 0)
-                    sendimage(client, ima.data, 2*ima.h*ima.w);
+                sendimage(client);
                 close(client);
                 DBG("%d closed", client);
             }else{WARN("accept()"); DBG("disconnected");}
@@ -1075,6 +1155,7 @@ void server(int sock, int imsock){
         }
         // process some data & send messages to ALL
         if(camstate == CAMERA_FRAMERDY || camstate == CAMERA_ERROR){
+            if(camstate == CAMERA_FRAMERDY) ima->timestamp = time(NULL); // set timestamp
             char buff[PATH_MAX+32];
             snprintf(buff, PATH_MAX, CMD_EXPSTATE "=%d", camstate);
             DBG("Send %s to %d clients", buff, nfd - 2);
diff --git a/server.h b/server.h
index 97bad25..a2ba9d9 100644
--- a/server.h
+++ b/server.h
@@ -40,6 +40,8 @@ char *makeabspath(const char *path, int shouldbe);
 // get image size in pixels
 #define CMD_IMWIDTH     "imwidth"
 #define CMD_IMHEIGHT    "imheight"
+// get shared memory key
+#define CMD_SHMEMKEY    "shmemkey"
 
 // CCD/CMOS
 #define CMD_CAMLIST     "camlist"
diff --git a/socket.c b/socket.c
index cbb22ac..253ea4f 100644
--- a/socket.c
+++ b/socket.c
@@ -161,13 +161,13 @@ int start_socket(int isserver){
 }
 
 // send image data to client
-int sendimage(int fd, uint16_t *data, int l){
-    DBG("fd=%d, l=%d", fd, l);
+int senddata(int fd, void *data, size_t l){
+    DBG("fd=%d, l=%zd", fd, l);
     if(fd < 1 || !data || l < 1) return TRUE; // empty message
-    DBG("send new image (size=%d) to fd %d", l, fd);
+    DBG("send new data (size=%zd) to fd %d", l, fd);
 //strncpy((char*)data, "TEST image data\n", 17);
 //l = 16;
-    if(l != send(fd, data, l, MSG_NOSIGNAL)){
+    if(l != (size_t)send(fd, data, l, MSG_NOSIGNAL)){
         WARN("write()");
         LOGWARN("write()");
         return FALSE;
@@ -183,7 +183,7 @@ int sendmessage(int fd, const char *msg, int l){
     static char *tmpbuf = NULL;
     static int buflen = 0;
     if(l + 1 > buflen){
-        buflen += 1024;
+        buflen = 1024 * (1 + l/1024);
         tmpbuf = realloc(tmpbuf, buflen);
     }
     DBG("send to fd %d: %s [%d]", fd, msg, l);
diff --git a/socket.h b/socket.h
index ff759d4..0d7764b 100644
--- a/socket.h
+++ b/socket.h
@@ -71,7 +71,7 @@ typedef struct{
 
 int open_socket(int isserver, char *path, int isnet);
 int start_socket(int server);
-int sendimage(int fd, uint16_t *data, int l);
+int senddata(int fd, void *data, size_t l);
 int sendmessage(int fd, const char *msg, int l);
 int sendstrmessage(int fd, const char *msg);
 char *get_keyval(char *keyval);