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NGC 891 in Andromeda



Scope: C8 f/6; Location: Blair Valley, Anza Borrego Desert, CA; 21 Oct. 2006; Camera: Artemis285

Exposure: 10 x 240 sec  Luminance exposures with IR Block Filter (bin 1x1); 6 x 120 sec RGB (bin 2x2) 

Processing: Images were captured in Artemis Capture (as FITs). Aligned/stacked in Registax 3 and saved as FITS. Luminance and Color channels were numerically scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.  Curves and Levels applied in Photoshop to optimize object features.  Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).  G2V color calibration factors  were applied to the color channels for color correction.  Selective sharpening with layer mask was applied to galaxy  spiral arms.  Color balancing and final touches were done in Photoshop.  Final Image size is approximately 1392x1040.

 North is to the right in this image. NGC 891 is a galaxy located in the constellation of Andromeda. It is an edge on galaxy - we view it from Earth at it's edge. The dark line through its center is a dark dust lane.  The distance of NGC 891 to Earth is approximately 10  million light years. This image replaces and earlier image that can be seen in the Archives here.  Horizontal FOV is about 26'

Image Center approximately - Equatorial 2000: RA: 02h 22m 33s Dec: +4220'50"



All images and content remain the property of Jim Thommes - copyright 2003 - 2012

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