NGC 663 and NGC 654 in Cassiopeia



Scope: Megrez II 80 mm  at f/5.9,  Location: Blair Valley, Anza Borrego Desert, CA  3 November 2007  Camera: Artemis285

Exposure: 10 x 1.5 min Luminance with IR Block Filter (bin 1x1); 6 x 1.5 min RGB (1x1 bin) 

Processing: Images were captured Artemis Capture (as FITs). Aligned/stacked and dark subtracted in Astroart with Sigma Combine. Luminance and Color channels were scaled and rough color balanced in Astroart. Central Gradient removal was performed in Astroart. Channels were co-registered in Astroart. The 60 sec IR block exposures were used as the main luminance construction with level adjustments and curves to bring out dim stars. Final LRGB combine was done in Photoshop in LAB color space.   Final touches were done in Photoshop.  Final Image size is approximately 1392x1040.

North is to the left in this image. NGC 663 is the larger open cluster in the lower right; NGC 654 is the smaller cluster. These clusters are  located in the constellation of Cassiopeia. NGC663 is a relatively young open cluster populated with young blue stars. This cluster has a number of so called Be stars. This image replaces an earlier image that can be seen in the Archives here. Horizontal FOV is 65'.

Image center is approximately - Equatorial 2000: RA: 01h 45m 21.9s Dec: +6132'24"


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