Messier 3 globular cluster in Canes Venatici taken July 30, 2011 from home with 130mm Astro-Physics refractor and Canon 7D camera, for stack of 2 x 5 minute exposures at ISO 800 and 2 x 5 minutes at ISO 1600 and f/6. Object was low in west.
This is Messier 3, the globular cluster in Canes Venatici, one of the brightest globulars in the northern sky. It was discovered by Charles Messier in 1764, but not resolved into stars until 1784 by William Herschel. The little galaxy above the orange star is 14th magnitude NGC 5263. This is a stack of just 5 x 8-minute exposures with the Canon EOS Ra at ISO 800 through the SharpStar 140mm refractor at f/6.5 with no field flattener. Taken from home March 27, 2020.
Messier 3, the globular cluster in Canes Venatici, in a moonlit sky. This is a stack of 16 x 4-minute exposures through the SharpStar 140PH apo refractor at f/6.5 with no field flattener or reducer, and using the Canon EOS Ra camera at ISO 400 with an Astronomik CLS light pollution clip-in filter. RC Astro Gradient Xterminator and StarShrink filters also applied. While it would be possible to neutralize the sky colour I kept the blue moonlight, again for artistry.
