Here is the Milky Way's largest star cluster: 10,000,000 or so stars and maybe a black hole (or not, a later study says), and perhaps the whole thing is the stripped core of a small galaxy. It's also quite close, just 15,800 light years away. The cluster is around 90 light years wide. It is one of most amazing things I've ever seen in a telescope. I observed it with a 15" f/5 Newtonian reflector from the HAS dark sky site in Columbus. It is ablaze with stars!
I'm pleased that this image shows so many stars. It gives some idea of the vastness one senses through the telescope. This image is an LRGB= 5;6;6;8x600" with a SBIG 11000M camera through a 12.5" RCOS telescope in rural New South Wales. Data was gathered by Martin Pugh who hosts an observatory there (details at
https://www.martinpughastrophotography.space/remote-imaging-and-telescope-hosting).
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