Celestial hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7547  ·  NGC 7549  ·  NGC 7550  ·  NGC 7553  ·  NGC 7558
Arp 99/Hickson 93 Galaxy Group in Pegasus, Tom Wildoner
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Arp 99/Hickson 93 Galaxy Group in Pegasus

Arp 99/Hickson 93 Galaxy Group in Pegasus, Tom Wildoner
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Arp 99/Hickson 93 Galaxy Group in Pegasus

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Description

This is a grouping of galaxies collectively known as Arp 99 (Arp Catalog of Peculiar Galaxies) and as Hickson 93 (Hickson Compact Group 93), all found in the constellation Pegasus. The three main galaxies in the image are the elliptical galaxy (center) NGC 7550, NGC 7547 is the small spiral galaxy to the left, and NGC 7549, the stretched barred spiral below NGC 7550 (this is interacting with the elliptical galaxy).

Tech Specs: Meade 12” LX-90, Antares Focal Reducer,  ZWO AS071 running at -10C, Celestron CGEM-DX mount, ZWO ASIAir Plus, ZWO EAF, 108 x 60 second exposures, darks from the library and flats after the imaging session. Image Date: October 29, 2022. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

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Arp 99/Hickson 93 Galaxy Group in Pegasus, Tom Wildoner