NGC 5899 with NGC 5893, 5895, 5896, 5900
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CLICK ON IMAGE FOR FULL SIZE VIEW (4000x2710) Scope: Celestron 9.25 Edge HD 235 mm at f/7, Location: DAA Observatory, Shelter Valley, CA, 24 and 30 April 2022, Camera: ASI294MM (Baader LRGB Filters) Exposure: L -
72 x 4 minutes (gain-121 2x2) , RGB - 22 each x 2.5 minutes
- (gain-121 2x2).
Processing: Data
Collection - Sequence Generator Pro (as FITs). Sub-frame calibration
- Pixinsight (WBPP). Sub-frame registration and integration (Average combine - Winsorized Sigma
Clipping) - PixInsight (WBPP). Mure Denoise - PixInsight. Non-linear stretching, normalization and
gradient removal - PixInsight. Curves, Levels, RGB combine, Luminance
layering - PixInsight. Generation of starless Luminance image for later
processing - StarXTerminator.
Photometric RGB calibration (SPCC) - PixInsight. De-convolution -
BlurXTerminator. Final finishing - Affinity Photo. Annotation - PixInsight, Aladin
(Simbad and NED), and Affinity
Photo. This image is a LRGB with luminance layering. Image processed at
4144x2822 resolution. Final
Image size is approximately 4000x2710. North is up in this image. This
group of galaxies appear to revolve around a central star - an astronomical
impossibility due to differences in mass and distance. Galaxies (counterclockwise
from upper left) are NGC 5900, NGC 5899, NGC 5893, and MCG +07-31-041. Next to
NGC 5893 toward bottom left are two smaller galaxies NGC 5895 and NGC 5896.
Galaxies NGC 5900 / NGC 5899 are a pair at about 122 million light years distant
(by redshift estimate) and NGC 5893 / NGC 5895 are a pair at about 249
million light years distant (by redshift estimate). The bright star in the
middle of the image is HD 135530 and is at a distance of 1,026 light years
distant (by parallax estimate). There are numerous background galaxies - several
notable have PGC catalog ID's. The Galaxy Group (SDSSCGB 11381) is visible in
the lower right and is about 1,608 million light years distant (by redshift
estimate). The furthest objects are the Quasars - those visible in this
image are from 1.29 to 11.93 billion years (Lookback). These objects,
information, background galaxies and some of the brighter stars are identified in the
annotated
image. Horizontal FOV is approximately 39.5 arc minutes. Full size
image scale is approximately 0.59 arcsec/pix. Image Center approximately - Equatorial 2000: RA: 15h 14m 08s Dec: +42°09'13"
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