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Thread: Arp 239

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    Default Arp 239



    Arp 239 consists of NGC 5278 (UGC 8677, VV 19/19a and others), the spiral at the center interacting with NGC 5279 (UGC 8678, VV 19b and others), the spiral to the left (east). Part of the “Appearance of fission” class, these are located approximately 370 million light-years away in Ursa Major.

    Luminance – 24x600s – 240 minutes – binned 1x1
    RGB – 8x300s – 40 minutes each – binned 2x2

    360 minutes total exposure – 6 hours

    Imaged April 7th, 8th and 9th and May 3rd and 4th, 2018 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/dcrows...693075/sizes/l

    Arp 239 - LRGB.jpg

    Dan
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    Default Re: Arp 239

    Fantastic!

    Mike
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    Default Re: Arp 239

    Very nicely done, Dan. Thanks much for sharing the details.

    Clear, Dark Skies
    John (Urban Astronomer)
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    Default Re: Arp 239

    Beautiful image Dan!
    Alex

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    Default Re: Arp 239

    Beautiful capture.

    I think you have to read Arp's book Seeing Red to appreciate what he means by "appearance of fission".

    Having read the book in detail, I would agree that the galaxy pair does indeed give the impression of being what Arp claimed it is likely to be.

    Clears,
    Joe
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