Daily Archives: February 28, 2015

Gem Cluster NGC 3293 and NGC 3324

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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 clusters 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.

Imaging telescopes or lenses: Saxon ED120 ED120
Imaging cameras: Canon EOS 60Da Canon 60Da
Mounts: Skywatcher AZ-EQ6 GT Skywatcher
Accessories: Orion Starshoot Auto-Guider
Resolution: 5184×3456
Dates: Jan. 27, 2015
Frames: 12×240″ ISO1250
Integration: 0.8 hours
Avg. Moon age: 7.17 days
Avg. Moon phase: 47.74%
RA center: 159.463 degrees
DEC center: -58.275 degrees
Pixel scale: 0.971 arcsec/pixel
Orientation: 90.733 degrees
Field radius: 0.840 degrees
Locations: Heathcote, Heathcote, Victoria, Australia

Author: Uri Abraham

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