Re: Arp 222
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Cool combination of spirals
From: DarkSkyNewMexico@groups.io <DarkSkyNewMexico@groups.io> On Behalf Of Dan Crowson
Sent: Sunday, June 28, 2020 3:42 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] Arp 222
Arp 222 (NGC 7727, VV 67 and others) is an odd spiral in the ‘Galaxies – Adjacent Loops’ class. It is located approximately 69 million light-years away (https://iopscience.iop.org/article/10.3847/0004-6256/152/2/50/pdf) in Aquarius. It could be interacting with NGC 7724 to the right (west) which is also located at about the same distance.
Luminance – 25x600s – 250 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
370 minutes total exposure – 6 hours 10 minutes
Imaged over six nights in September and October, 2019 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.