Hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7769  ·  NGC 7770  ·  NGC 7771
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A Trio of Interacting Galaxies in Pegasus, 



    
        

            KuriousGeorge
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A Trio of Interacting Galaxies in Pegasus

Getting plate-solving status, please wait...
A Trio of Interacting Galaxies in Pegasus, 



    
        

            KuriousGeorge
Powered byPixInsight

A Trio of Interacting Galaxies in Pegasus

Imaging Telescopes Or Lenses
Planewave CDK24
Imaging Cameras
FLI PL16803
Mounts
Planewave L600
Filters
Astrodon 50mm B · Astrodon 50mm R · Astrodon 50mm L · Astrodon 50 mm G
Accessories
Planewave EFA · FLI CFW-5-7 · Hedrick Focuser · Planewave Delta-T
Software
PixInsight 1.8 · Planewave PWI3 · Planewave PWI4 · Sequence Generator Pro · Photoshop CS3 · Maxim DL6 · Adobe Photoshop CC 2014
Guiding Cameras
Starlight Xpress Ultrastar

Acquisition details

Dates:
Sept. 30, 2021 ·  Oct. 1, 2021 ·  Oct. 3, 2021 ·  Oct. 6, 2021
Frames:
Astrodon 50 mm G: 8x900" (2h) -20°C bin 1x1
Astrodon 50mm B: 5x900" (1h 15') -20°C bin 1x1
Astrodon 50mm L: 41x900" (10h 15') -20°C bin 1x1
Astrodon 50mm R: 6x900" (1h 30') -20°C bin 1x1
Integration:
15h
Darks:
20
Flats:
80
Flat darks:
80
Bias:
20
Avg. Moon age:
18.55 days
Avg. Moon phase:
18.59%
Mean SQM:
21.20
Mean FWHM:
2.00

RA center: 23h51m20s.422

DEC center: +20°0841.42

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.040 degrees

Field radius: 0.267 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 3068x2740

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

It was mostly cloudy during this October dark cycle. The first 2 nights were clear, dark and steady. During these two evenings I was able to capture over 10 hours of luminance with 2" average FWHM. Little did I know that it would take another 8 days to capture just over an hour of R and B and two hours of green. Overall I'm very happy I could capture at least one object during this unusually overcast month. (-:


"This galaxy system NGC 7769/70/71 is also known as CPG 592 from Karachentsev's catalog of galaxy pairs. This trio of 12-14th-magnitude galaxies lies within the Great Square of Pegasus, about 200 million light-years away. NGC 7771 shows a tidal feature strongly inclined to its disk and aligned with the compact companion NGC 7770, which may represent stars stripped from the smaller galaxy. NGC 7770 shows star-forming clumps in its inner disk, in contrast to the sharp, compact nucleus of NGC 7769."

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A Trio of Interacting Galaxies in Pegasus, 



    
        

            KuriousGeorge

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Unique or Unusal Deep Sky Targets