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NGC 4559 in Coma Berenices

 

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Scope: C8 f/7.1; Location:  Blair Valley, Anza Borrego Desert, CA; 21 April, 2007; Camera: Artemis285

Exposure: 9 x 360 sec  Luminance exposures with IR Block Filter (bin 1x1); 8 x 120 sec RGB (bin 2x2) 

Processing: Images were captured in Artemis Capture (as FITs). Aligned/stacked in Registax 4 and saved as FITS. Luminance and Color channels were numerically scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.  Central Gradient removal was performed on the L,R,G,B stacked masters. The IR Block exposure was used as the luminance channel. Curves and Levels applied in Photoshop to optimize object features.  Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).   Selective sharpening with layer mask was applied to galaxy  features. Light noise reduction was performed using PixInsight LE. Final touches were done in Photoshop.  Final Image size is approximately 1392x1040.

 North is up in this image. NGC 4559 is in the constellation of Coma Berenices. It is a spiral galaxy showing bright star-forming regions and dust lanes in its spiral arms. NGC 4559 is estimated form 30 to 35 million light years distant from Earth.  Horizontal FOV is about 21'

Image Center approximately - Equatorial 2000: RA: 12h 35m 58s Dec: +2757'35"

 

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

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