Gem Cluster  NGC 3293

Gem Cluster NGC 3293

Constellation: Carian
Ra: 10h 35m 48s
Dec: -58deg 14min
Distance: 8,400 light years
Image Size: 40' x 40'
North: Up

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Description

The Gem Cluster, NGC 3293, is an open star cluster containing more than 50 stars within the OB1 association in Carina. The mag 6.5 red giant is clearly shown in the image above, along with the many very hot, spectral type B0 stars that comprise most of the cluster. It is estimated to be very young at 10 million years and is 8,400 light years distant. It was discovered by Abbe Lacaille in 1751 in S. Africa. There are many close-up images of NGC3293. I was intrigued by the location of this brilliant open star cluster within the surrounding nebulosity, which emits strongy in H-alpha and has considerable structure. Thus, I was interested in bringing out the star cluster, its adjacent reflection component and the gradation into the larger surrounding H-a structure. You can see this and the larger scale nebulosity from the Galaxy Map image below. .
Exposure: 9.25 hrs Total; 1.75 hrs Clear, 3 hrs RGB, 4.5 hrs H-a
Telescope: 14.5
Mount: Software Bisque Paramount ME
Oag: Astrodon MonsterMOAG
Acquisition: CCD AutoPilot4
Calibration: CCDStack2
Observatory Site: Riverland Dingo Observatory, Moorook, S. Australia
Camera: Apogee U16M
Filters: Astrodon 5 nm H-a, Gen 2 CRGB
Guider: SBIG ST-402
Camera Operation: MaximDL5.08
Processing: Photoshop CS3
Image Date: 02/07/2010

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