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NGC 3953 and Abell 1387 in Ursa Major



Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: Blair Valley, Anza Borrego Desert, CA   14 March 2015  Camera: Atik 383L

Exposure: Exposure: 16 x 8 min  (1x1 bin) exposure with UV/IR block,  8 x 3 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Calibrated, stacked (Kappa Sigma Combine) Deep Sky Stacker, LRGB channel registration, equalization, and central gradient removal - Astroart.  Curves, Levels, RGB combine Images Plus. Luminance layering and finishing  - Photoshop. This image is a  LRGB combine with Luminance layering.  Color saturation in LAB color;    Final Image size is approximately 2600x1950.

North is up in this image. This image field features a line of galaxies form the upper left to the lower right. Starting in the upper left is NGC 3953 - a barred spiral galaxy.  At the other end in the lower right is the smaller NGC  3917. Further to the lower right corner is the galaxy cluster Abell 1387. The galaxies in this cluster appear very small due to their large distance from Earth - approximately 1.77 billion light years. The overall cluster spans 14.5 million light years across. The smaller galaxies in this field and in the Abell 1387 galaxy cluster are better seen in the larger image. The more notable galaxies are identified in the  the annotated image.  NGC 3953 is 61 million light years distant from Earth. NGC 3917 is about 56 million light years distant.  Horizontal FOV is 88'

Image center is approximately - Equatorial 2000: RA: 11h 51m 45s Dec: +5159'29"


All images and content remain the property of Jim Thommes - copyright 2003 - 2015 copyright 2003 - 2012

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