Stephan's Quintet Galaxy Group in Pegasus

            Stephan’s Quintet can be found in the constellation Pegasus, the apparent magnitude of these galaxies hovers around 14.0, making this a tough object to capture in a smaller telescope. This group of galaxies was discovered by Edouard Stephan in 1877 at Marseille Observatory. Although referred to as a quintet, only four of the five galaxies are interacting with each other at a distance of about 300 million light years! NGC 7320 is actually much closer at a distance of “only” 40 million light years.

The members in the group include NGC 7320, NGC 7319, NGC 7318a, NGC 7318b, and NGC 7317. The group is also listed in the Arp catalog as ARP319.

Observation data (Epoch J2000)
Constellation(s): Pegasus
Right ascension: 22h 35m 57.5s
Declination: +33° 57′ 36″
Number of galaxies: 5

Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at 0F, 1 Hour and 55 Minutes using 60 second exposures, Celestron CGEM-DX pier mounted, ZWO EAF and ASIAir Pro, processed in PixInsight. Image Date: July 1, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).
   

Taken in: United States / Pennsylvania / Packer Township (show map)

Taken on: November 14, 2024

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Bad Astronomy

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Orion RC

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Stephans Quintet

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NGC7320

NGC7319

NGC7318a

NGC7318b

NGC7317

ARP319 « less

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