Messier 103


This open cluster in the constellation of Cassiopeia is easily visible with binocculars or a small telescope under moderately dark skies. It was discovered by Pierre Mechain in 1781 and later catalogued by Charles Messier. According to Stephen O'Meara, it consists of 172 stars and is best seen under low power. North is up.


Telescope: Astro-Physics 160mm EDF f7.5 Designation: M103 & NGC581
Mount: Astro-Physics AP1200GTO
Constellation: Cassiopeia
Camera: Apogee U16M with Astrodon Gen II Filters Distance: Approx 8000-9000 light years
Guiding: SBIG ST402 via Mini Borg 60mm Type: Open Cluster
Exposure: 3 Hours RGB Position: R.A. 01 hr 33 min , Dec +60042'
Processed using PixInsight Date: August 2014
Acquisition: CCDAutopilot/MaximDL/The Sky 6/M1OASYS Location: Deerlick Astronomy Village