![Comparing M13 Photos [Messier 13]](https://i1.wp.com/kevinrfrancis.com/wp-content/uploads/2019/06/M13_Great_Globular_Cluster_RRRT_5_16_19.jpg?fit=1679%2C1979&ssl=1)
M13: Great Globular Cluster May 16, 2019
Messier 13
Telescope: RRRT (Fan Mountain)
Camera: SBIG STX-16803
Exposure:
Visible (Mono): 40 @ 2 min
Total - 1 Hour 20 minutes exposure
Comparing M13 Photos [Messier 13]
M13 or the Great Globular Cluster in Hercules is an astronomy favorite. It is 145 light years in diameter and contains approximately 300,000 stars. I've recently focused two telescopes on…
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Comparing M13 Photos [Messier 13]