...

cxx/mount_astrom.h

@@ -96,6 +96,16 @@ static int mcc_julday(const std::chrono::system_clock::time_point& start_time,
 template <traits::mcc_scalar_or_simd_c T, typename CT, typename DT>
 T mcc_time_to_alt_limit(const T& alt_limit, const T& RA, const T& DEC, const std::chrono::time_point<CT, DT>& now)
 {
+    //     sin(alt) = sin(DEC)*sin(phi) + cos(DEC)*cos(phi)*cos(HA)
+    //     HA = LST - RA
 }
 
+
+/* IERS bulletines
+ *
+ * BULLETIN A: https://datacenter.iers.org/data/latestVersion/bulletinA.txt
+ * leapseconds: https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat
+ *
+ */
+
 }  // namespace mcc::astro