NGC 288 (Melotte 3) is a Shapley-Sawyer class X (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 28,700 light-years away in Sculptor. The cluster is located a couple of degrees from NGC 253 (the Sculptor Galaxy).
Luminance – 10x600s – 100 minutes – binned 1x1
RGB – 10x600s – 100 minutes each – binned 1x1
400 minutes total exposure – 6 hours 40 minutes
Imaged July 1st, 2nd, 3rd and 4th, 2022 at the El Sauce Observatory (Rio Hurtado, Chile) with a FLI PL 9000 on a PlaneWave CDK24 at f/6.5 3974 mm.
This data is from Telescope Live (https://telescope.live/) “One-click Observations.”
LRGB - https://www.flickr.com/photos/dcrowson/52194419715/sizes/l/
My previous refractor image can be found here - https://www.flickr.com/photos/dcrowson/29400250181.