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NGC 5389 and NGC 5430



Scope: Explore Scientific MN152 at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 24 April 2020,  Camera: Atik 383L (Astronomik Gen 2 LRGB Filters)

Exposure: Exposure: 16 x 7 min  (1x1 bin) exposure with UV/IR block filter, 14 x 5 min (1x1 bin) each RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Subframe calibration - Pixinsight. Subframe integration (Average combine -  Winsorized Sigma Clipping) - PixInsight.  MureDenoise on each LRGB integration - PixInsight. Non-linear stretching and normalization  - PixInsight.  Curves, Levels, RGB combine, Luminance layering - PixInsight.  Luminance construction was a weighted average of L, R, G, B integrated stacks.  Final finishing  - Photoshop.  RGB calibration - eXcalibrator. Annotation - PixInsight, Aladin (Simbad and NED), and PhotoShop. This image is a  RGB combine with Luminance layering.  Images processed at resolution 3354x2529. Final Image size is approximately  3000x2250.

North is up in this image.  This image shows the NGC 5430 galaxy group (lower left) and the NGC 5389 / NGC 5379 galaxy pair (upper right). There are numerous background galaxies in this field as well. In this image, the NGC 5430 galaxy group shows mostly as the dominant, NGC 5430 galaxy - there are four other smaller galaxies that are not well resolved in this image. One, Mrk 799A, has its core as resolvable.  The full size image has an image scale of approximately 1.76 arcsec/pix. some of the spiral galaxies'  structures are apparent at this scale. The NGC 5389/5379 pair is about 87 to 90 million light years distant. These objects and some of the brighter stars are identified in the annotated image. Horizontal FOV is approximately 88 arc minutes. 

Image center is approximately - Equatorial 2000: RA: 13 57 50 Dec: +59 31 27


All images and content remain the property of Jim Thommes - copyright 2003 - 2020

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