M15: A globular cluster in
Pegasus
This is an old globular cluster
with a collapsed core, a collection of a hundred thousand
low-metallicity stars, 30000 light years away.
Date: Oct.
30-31, 2021; Authors:
F. Houston, K. Partlow, A. Kelly, A.
Langlois, C. Tibbs; Image size: 17.5'x23.7'
Exposures: 60 min red, 55 min green, 55 min blue (total
2.8 h); Telescope: CDK
17" (on campus); Camera: SBIG
ST-10
Limiting magnitude:
19.2 mg; Orientation: W is up, N is left.
OLD:
Images taken: Nov. 19, 2009. Students: C. Simon and D. Odom; Telescope: Meade 12 in with f/5.9 focal
reducer (f=71in). Camera: SBIG ST-10 CCD