Imaging cameras: 40D Canon
Focal reducers: 6.3 reducer Celestron
Dates:Nov. 8, 2009
Frames: 16x60"
Integration: 0.3 hours
Avg. Moon age: 20.89 days
Avg. Moon phase: 63.22%
Astrometry.net job: 571010
RA center: 1h 33' 32"
DEC center: +60° 35' 38"
Pixel scale: 2.060 arcsec/pixel
Orientation: -67.177 degrees
Field radius: 0.291 degrees
Resolution: 856x551
Locations: Leesburg home, Leesburg , Florida, United States
Messier 103 (also known as M103, or NGC 581) is an open cluster where a few thousand stars formed in the constellation Cassiopeia. This open cluster was discovered in 1781 by Charles Messier’s friend and collaborator Pierre Méchain. It is one of the most distant open clusters, with distances of 8,000 to 9,500 light years from the earth and ranging about 15 light years apart. There are about 40 member stars within M103, two of which have magnitudes 10.5, and a 10.8 red giant, which is the brightest within the cluster. M103 is about 25 million years old.
Comments