Arp 263


Dan Crowson
 

Arp 263 (NGC 3239, UGC 5637, PGC 30560, VV 95 and others) is an irregular galaxy approximately 29.75 million light-years away in Leo. Arp has this one in his ‘Irregular Clumps’ class. Probably the result of the merger of a couple galaxies in the past, this one was discovered by William Herschel March 21, 1784. There’s a good paper on the structure of this galactic train wreck here - http://articles.adsabs.harvard.edu/full/1990PASP..102...41K. Thanks go to mentor Rick Johnson (https://www.mantrapskies.com/) for pointing out the paper.

 

Luminance – 24x600s – 240 minutes – binned 1x1

RGB – 12x300s – 60 minutes each – binned 2x2

 

420 minutes total exposure – 7 hours

 

Imaged January 18th and 22nd, 2020 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.

 

LRGB - https://www.flickr.com/photos/dcrowson/50662250398/sizes/l/

 

LRGB annotated - https://www.flickr.com/photos/dcrowson/50662250548/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 


Bernard Miller
 

Dan,

 

Great image. One of the strangest galaxies I have ever seen.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Dan Crowson
Sent: Sunday, November 29, 2020 6:14 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] Arp 263

 

Arp 263 (NGC 3239, UGC 5637, PGC 30560, VV 95 and others) is an irregular galaxy approximately 29.75 million light-years away in Leo. Arp has this one in his ‘Irregular Clumps’ class. Probably the result of the merger of a couple galaxies in the past, this one was discovered by William Herschel March 21, 1784. There’s a good paper on the structure of this galactic train wreck here - http://articles.adsabs.harvard.edu/full/1990PASP..102...41K. Thanks go to mentor Rick Johnson (https://www.mantrapskies.com/) for pointing out the paper.

 

Luminance – 24x600s – 240 minutes – binned 1x1

RGB – 12x300s – 60 minutes each – binned 2x2

 

420 minutes total exposure – 7 hours

 

Imaged January 18th and 22nd, 2020 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.

 

LRGB - https://www.flickr.com/photos/dcrowson/50662250398/sizes/l/

 

LRGB annotated - https://www.flickr.com/photos/dcrowson/50662250548/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 




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Gregg Ruppel
 

Interesting field...thanks Hilton Arp!  Thanks for sharing.

Gregg

Visit my astronomy & astrophotography site
www.greggsastronomy.com

On Nov 29, 2020, at 6:09 PM, Dan Crowson <dcrowson@...> wrote:



Arp 263 (NGC 3239, UGC 5637, PGC 30560, VV 95 and others) is an irregular galaxy approximately 29.75 million light-years away in Leo. Arp has this one in his ‘Irregular Clumps’ class. Probably the result of the merger of a couple galaxies in the past, this one was discovered by William Herschel March 21, 1784. There’s a good paper on the structure of this galactic train wreck here - http://articles.adsabs.harvard.edu/full/1990PASP..102...41K. Thanks go to mentor Rick Johnson (https://www.mantrapskies.com/) for pointing out the paper.

 

Luminance – 24x600s – 240 minutes – binned 1x1

RGB – 12x300s – 60 minutes each – binned 2x2

 

420 minutes total exposure – 7 hours

 

Imaged January 18th and 22nd, 2020 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.

 

LRGB - https://www.flickr.com/photos/dcrowson/50662250398/sizes/l/

 

LRGB annotated - https://www.flickr.com/photos/dcrowson/50662250548/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com