Andromeda Galaxy - M31
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Scope: 180mm SLR Lens (Vivitar) at  f/4.5 Location: Blair Valley, Anza Borrego Desert, CA   29 Oct. 2005  Camera: Artemis285

Exposure: 6 x 180 sec  Luminance exposures with IR Block filter,10 x 90  sec RGB exposures. 

Processing: Images were captured Artemis Capture (as FITs). Aligned/stacked in Registax 3 and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart (background level).  Channels were co-registered in Astroart. Some luminance data from a single lens taken 24 September, 2005 was combined in the luminance construction to help improve sharpness in the galaxy. Curves and levels applied in Photoshop. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Selective sharpening with layer mask was applied to galaxy dust lanes. Brighter star sizes were managed with a minimum filter.  SGBNR was used to smooth  background noise on the final result. Final Image size is approximately 1392x1040.

North is to the right in this image. The image was guided for all exposures. M31 is a prominent member of the local galaxy group including our milky way and M33 Triangulum galaxy. M31 is the nearest large galaxy at a distance of about 2.9 million light years. This image also shows M110 and M32 smaller "satellite"  galaxies.  This image replaces an earlier image that can be seen in the Archives here.  Horizontal FOV is 172'

Image center is approximately - Equatorial 2000: RA: 00h 42m 44s Dec: +4116'08"

 

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