One of the brightest stars of the storied Southern Cross isn’t a star at all, but splendid cluster of young stars aptly called the Jewel Box. Putting the Jewel Box in perspective (composite image). Explanation: The great variety of star colors in this open cluster underlies its name: The Jewel Box. One of the bright central stars is a red supergiant, in contrast to the many blue stars that surround it.
There is a Jewel Box in Crux. This beautiful open cluster is also known as Kappa Crucis Cluster or NGC4755. It got its Jewel Box nickname from an English astronomer John Herschel in the 1830s because the striking colour contrasts of its pale blue and orange stars seen through a telescope reminded Herschel of a piece of exotic jewellery. The Jewel Box has such a splendid visage, being the possible true archetype of so many of the other open star clusters. From my own perspective this can rightly be called The Jewel of the South. Need some pretty for today? Then you should feast your eyes on this exquisite picture of the cluster of stars known as the Jewel Box:.
The Jewel Box (also known as NGC 4755, Herschel’s Jewel Box, the Kappa Crucis Cluster and Caldwell 94) is an open cluster about 20 light-years across. NGC4755, an open star cluster in the constellation Crux, displays its many colors in this picture from the Cerro Tololo Inter-American Observatory’s 0. It is popularly known as the Jewel Box because an early catalog described it as a superb piece of jewelry. You will need to make a good quality printed copy (color printer needed) of the Jewelbox Image and StarGauge. The image is available to you in three formats.
Ngc4755 The Jewel Box In The Southern Cross
The Jewel Box is an open star cluster visible as a faint smudge with the naked eye under dark skies. It is located 6,440 light years away towards the constellation Crux, The Southern Cross. In young clusters like the Jewel box, the brighter stars should be variables and should be blue. They should also have started evolution away from main sequence, unlike the low mass stars who just quietly burn away their hydrogen. This famous group of young bright stars is an open cluster some 7800 light years from the Sun. It was named the Jewel Box from its description by Sir John Herschel as ‘a casket of variously coloured precious stones’, which refers to its appearance in the telescope. Kappa Crucis, Jewel Box Right Ascension 12: 53. This cluster was one of the finest open clusters discovered by Nicholas Louis de Lacaille when he was in South Africa during 1751-1752. The Jewel Box Cluster (or Kappa Crucis or NGC 4755) is located 6400 light years away from Earth in the constellation of Crux, better known as the Southern Cross. Trumpler 14 is one of the ‘most populous clusters within the Carina Nebula.’ It is also the youngest, exploding with hot, short-lived stars.
The Jewel Box, An Open Star Cluster
An open cluster of about 100 stars in the constellation Crux, also known as the Kappa Crucis Cluster after its most prominent member, a blue supergiant (visual magnitude 5. NGC 4755 or Caldwell 94 (also known as the Jewel Box) is an open cluster in the constellation Crux. It has an apparent visual magnitude of 4.2 and its angular diameter is 10 arc-minutes. Startling Stats and Fascinating Facts about one of the most beautiful open star clusters in the southern sky – The Jewel Box cluster (NGC 4755)!