SUNSET: 
0
Photographer:
Rod Pommier
Location of Photo:
Pommier Observatory, Portland, OR, USA
Date/Time of photo:
2024-07-22 through 2024-07-25
Equipment:
planewave CDK17 on L500 mount, SBIG STL 11000 CCD camera with Baader Planetarium L, R, G, and B filters.
Description:
M22 is a Shapley-Sawyer Class VII globular cluster lying 9,785 light-years from Earth in Sagittarius. That makes it one of the closest globular clusters. While most globular clusters are found far from the plane of the Milky Way in fields only sparsely populated with stars, M22 lies close to the heart of the Milky Way. Thus, it is a real treat to view it amidst a field of countless colorful Milky Way foreground stars. The considerable amount of galactic dust lying between us and M22 also reddens the cluster, giving it a slightly yellowish tinge when properly color balanced, compared to the white color of most other globulars. Exposures: L:R:G:B = 25:25:25:25 minutes = 2 hours, 5 minutes total exposure, completely unguided.
