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NGC 5746 and NGC 5740 in Virgo



Scope: Celestron 9.25 Edge 235 mm at f/7, Location: DAA Observatory, Shelter Valley, CA,  19 May 2017  Camera: ST8300M (Baader LRGB filters)

Exposure: Exposure:  15 x 12 min (1x1 bin) exposure with IR/UV Block filter, 8 x 4 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 gradient removal - Astroart.  Curves, Levels, RGB combine - ImagesPlus. Luminance Layering, final stretch, and finishing  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Color saturation in LAB color.  The IR/UV Blocking filter exposure stack was used for the luminance layer. Images processed at 3352 x 2532 resolution. Final Image size is approximately  2800 x 2100.

North is to the left in this image.   The two dominant galaxies in this image are NGC 5746 (lower left) and NGC 5740 (upper right).  Both galaxies share some common morphology characteristics (SAB(rs)). This field is in the eastern part of the constellation of Virgo. The smaller galaxy in the very upper right is the remaining NGC object in this field - NGC 5738. All three galaxies together form the galaxy group  [CFM2007] HDC 888 from the Crook+ group catalog created 2007 from the 2MASS (survey). There are other visible background galaxies  in this field with some high redshift values that put their lookback distance at distances of about 1 billion light years  Some of these galaxies and some of the brighter stars are identified in the annotated image.This image replaces an earlier image that can be accessed in the Archives here. Horizontal FOV is approximately 38 arc minutes.

Image center is located approximately - Equatorial 2000: RA: 14h 44m 45s Dec: +0149'07" 


All images and content remain the property of Jim Thommes - copyright 2003 - 2017 copyright 2003 - 2012

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