NGC 3293 (The Gem Cluster) is another Carina open cluster that is of a similar age to the more famous open cluster known as the Jewel Box / NGC 4755. This wonderfully attractive cluster has an associated bright nebulosity being Gum 30 covering some 28.3 × 17.4 arcmin – but sometimes this given designation is wrongly NGC 3293. In fact, NGC 3293 is only the cluster. Gum 30 appears roughly triangular shape object, whose aligned longest axis is roughly north to south. Ninety-three (93) components have been identified, with the cluster’s brightness has the total magnitude is 4.7, or 8.5 magnitude based on the 5th brightest star. The Trumpler class has been established as I 3 r n. (description from southastrodel.com) A little bit to the right from center – NGC 3324, or Gabriela Mistral Nebula. This extensive and irregular nebulous haze seems to be an outlying part of the great Eta Carinae complex. It is excited by a a small pair of O6 stars in the brightest portion.
Author: Uri Abraham
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