The Jewel Box (also known as the Kappa Crucis cluster, NGC 4755, or Caldwell 94) is an open cluster in the constellation Crux, originally discovered by Nicolas Louis de Lacaille in 1751–1752. This cluster was later named the Jewel Box by John Herschel when he described its telescopic appearance as "... a superb piece of fancy jewellery". It is easily visible to the naked eye as a hazy star some 1.0° south east of the first-magnitude star Mimosa (Beta Crucis). This hazy star was given the Bayer star designation "Kappa Crucis", from which the cluster takes one of its common names. The modern designation Kappa Crucis has been assigned to one of the stars in the base of the A-shaped asterism of the cluster.
This cluster is one of the youngest known, with an estimated age of 14 million years. It has a total integrated magnitude 4.2, is located 2.16 kpc, or 7,060 light years from Earth, and contains just over 100 stars.
Solid result, well done. This has been on my "to do" list for some time, but a combination of a firmware crash with the mount and a run of bad weather have prevented it. Kind of envious of what you've got here.
This has been on my "to do" list for some time, but a combination of a firmware crash with the mount and a run of bad weather have prevented it. Kind of envious of what you've got here.
