Add focussing_app function (focus_app.py) to standardize end-user applications, Rewrite focussing applications

focus_seq_Z1000_IXon.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python
+
+#
+#   Get sequence of focussing images and
+#   compute the best focus value
+#
+#   This variant uses Fatkhullin's AndorAPI2 library
+#   to control Andor IXon Ultra EMCCD camera
+#   The script uses TCP-socket Python API to control focus
+#   of the SAO RAS Zeiss-1000 telescope
+#
+
+
+from OBSUTILS import focussing_app
+import sys
+import argparse as ap
+import subprocess as sp
+import numpy as np
+import socket
+
+
+def set_focus(foc_val):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    sock.connect(("ztcs.sao.ru", 4444))
+
+    sock.send("goto={:g}".format(foc_val))
+    resp = sock.recv(20)
+
+    if resp != "OK":
+        sock.close()
+        return 1
+
+    sock.close()
+
+    return 0
+
+
+#
+#   Assumes Andor IXon EMCCD server is listenning UNIX socket on localhost
+#
+def get_image(filename, exp_time):
+    cmd = ["ixonultra_cmdclient", "-A", "CCD", "-T", "{:g}".format(exp_time), filename]
+
+    ret = sp.run(cmd, stdout=sp.PIPE, stderr=sp.PIPE)
+    return ret.returncode
+
+
+if __name__ == "__main__":
+    parser = ap.ArgumentParser(
+        prog="{}".format(pl.Path(sys.argv[0]).name),
+        description="Zeiss-1000 and Andor Ixon EMCCD hardware: focussing sequence implementation.",
+    )
+
+    ret = focussing_app(parser, set_focus, get_image)
+
+    sys.exit(ret)