NGC 5054 and NGC 5044
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CLICK ON IMAGE FOR FULL SIZE VIEW (4000x3000) Scope: Explore Scientific MN152 at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 5 and 13 May 2021 Camera: ASI1600M (Astronomik Gen 2 LRGB Filters) Exposure:
Exposure: L - 64 x 4 minutes (gain-139 1x1) , RGB - 20 each x 3 minutes
- ( gain-121 1x1).
Processing: Data
Collection - Sequence Generator Pro (as FITs). Sub-frame calibration
- Pixinsight. Sub-frame registration and integration (Average combine - Winsorized Sigma
Clipping) - PixInsight. Mure Denoise - PixInsight. Non-linear stretching, normalization and
gradient removal - PixInsight. Curves, Levels, RGB combine, Luminance
layering - PixInsight. Final finishing - Affinity Photo.
Photometric RGB calibration
- PixInsight. Annotation - PixInsight, Aladin (Simbad and NED), and Affinity
Photo. This image is a LRGB with luminance layering. Image processed at
4656x3520 resolution. Final
Image size is approximately 4000x3000. North is up in this image. The
spiral galaxy in the lower left is NGC 5054. It's distance is somewhat different
by independent estimate (56 million light years) and by redshift estimate (95
million light years). The other large galaxy, NGC 5044, is an elliptical galaxy
and is 120 and 142 million light years distant by independent and redshift
estimate (respectively). Other NGC galaxies are NGC 5017, 5031, 5035, 5037,
5038, 5046, 5047, and 5049. Many of these galaxies are members of the very large
NGC 5044 galaxy group (over 8 degrees in major axis). A smaller group with
roughly the same center is HDC 775. It is mostly covered in this field (lower
right quadrant). Some of the quasars visible in this image range from 2.5
to 11.5 billion light years lookback. These objects,
information, background galaxies and some of the brighter stars are identified in the
annotated
image. Horizontal FOV is approximately 85 arc minutes. Full size
image scale is approximately 1.27 arcsec/pix.. Image center is approximately - Equatorial 2000: RA: 13h 15m 24s Dec: -16° 23 08"
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