Having bought the book ‘The Caldwell Objects – and how to observe them’ it’s only fitting that I identify this object with it’s Caldwell number rather than the rather nondescript NGC 4755. Located in Crux, The Southern Cross, at a declination of -60 degrees this is a Southern Skies cluster only.
Also known as The Jewel Box this compact cluster is just 10? in size and could be mistaken for a 4th magnitude star with the naked eye. 5,000 light years away , the stars in it are about 15 million years old.
This image is comprised of 28 3 minute LRGB exposures (12,6,6,4).