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NGC 4371 and NGC 4429 in Virgo



Scope: FSQ-106N at f/5, Location:  DAA Observatory, Shelter Valley CA,   28 March 2017  Camera: Atik 383 (Astronomik Gen II  LRGB filters)

Exposure: Exposure: 16 x 12 min, (1x1 bin) exposure with UV/IR block,  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 and equalization, rough color calibration, gradient removal - Astroart.  Curves, Levels, RGB combine - ImagesPlus, Luminance layering and finishing  - Photoshop. This image is an LRGB combine with Luminance layering. Final color calibration - eXcalibrator. The Luminance construction was the Luminance exposures. Color saturation in LAB color.    Native image size - 3354x2529.  Final Image size is approximately 2800x2100.

North is up in this image. This field lies within the constellation of Virgo - it is a portion of the Virgo Galaxy Cluster.  The dominant galaxies are NGC 4371 and NGC 4429 (center and lower left respectively). This field has a significant number of major catalog galaxies - there are 12 NGC's and 16 IC's. Most of these galaxies lay 40 to 77 million light years distant. A close inspection of this field in the larger image shows numerous other galaxies that are not annotated in the annotated image  (only those from the NGC/IC catalogs are annotated). These galaxies and some of the bright stars are identified in the annotated image.   Horizontal FOV is 120'

Image center is approximately - Equatorial 2000: RA: 12h 24m 54s Dec: +1142'00" 


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

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