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M105 Grouping in Leo



Scope: C8  f/6.4, Location: Del Mar, CA   23 March 2006  Camera: Artemis285

Exposure: 12 x 240 sec Luminance exposures with IR block, 8 x 120 sec (2x2 bin) RGB exposures.

Processing: Images were captured in 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.  Channels were co-registered in Astroart. Curves and Levels applied in Photoshop to optimize object features.  SGBNR was used to smooth  background noise on the luminance construction.  Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Brighter star sizes were managed with a light minimum filter applied with mask. Photoshop (Astronomy Tools Actions) was also used to reduce background noise on  the final result. Color balancing and final touches were done in Photoshop.   Final Image size is approximately 1392x1040.

North is up in this image. The image was guided for all exposures. There are three dominant galaxies in this image, M105 is on the right. NGC 3384 is to the left and NGC 3389 is the lower object. Both M105 and NGC 3384 are part of a galaxy grouping and are elliptical galaxies. Their distance is approximately 38 million light years. NGC 3389 is likely a background galaxy at a greater distance. Horizontal FOV is 24'

Image center is approximately - Equatorial 2000: RA: 10h 48m 09s Dec: +1235'02"


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

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