NGC 5897 (ESO 582-SC2 and others) is a Shapley-Sawyer class XI (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 24,100 light-years away in Libra.
Luminance – 20x300s – 100 minutes – binned 1x1
RGB – 14:14:15x300s – 70:70:75 minutes each – binned 1x1
315 minutes total exposure – 5 hours 15 minutes
Imaged April 24th and 25th, May 27th and June 5th and 6th, 2022 at the El Sauce Observatory (Rio Hurtado, Chile) with a FLI PL 9000 on a PlaneWave CDK24 at f/6.5 3974 mm.
LRGB - https://www.flickr.com/photos/dcrowson/52855121955/sizes/l/
This data is from Telescope Live (https://telescope.live/) “One-click Observations.”
See my previous refractor image here - https://www.flickr.com/photos/dcrowson/50868947451.