The Jewel Box Cluster in the Crux Constellation ( NGC 4755 ) by Mike O’Day ( 500px.com/MikeODay )
Viewed through a telsecope, John Herschel described the Jewel Box Cluster as “a casket of varioulsy coloured precious stones” – hence the name. The Jewel Box, visible only from the Southern Hemisphere and appearing as a bright fuzzy star to the naked eye, is a cluster of around 100 ( mostly blue giant ) stars approximately 7000 light years from Earth.
NGC 4755 – RA 12h 54.5m, Dec -60deg 26′.
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher AZ Eq6 GT Mount.
Baader MPCC Mark 3 Coma Corrector.
Nikon D300 (unmodified).
Field of view (deg) ~ 1.35 x 0.90.
Combination of 15 images 30 sec @ ISO800.
Registax & Photoshop
24 April 2014 (re-processed Nov 2015) via Tumblr http://bit.ly/1O0P4sx