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Thread: Bulls Eye! Arp 148

  1. #1
    Join Date
    Dec 2006
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    Bulls Eye! Arp 148

    Arp 148 is more commonly known as Mayall's Object. It is a pair of colliding galaxies about a half billion light years away. One galaxy has "just" pierced the heart of another and is bursting out the other side. This is best seen in the rather famous Hubble image of this pair.
    http://imgsrc.hubblesite.org/hu/db/i...-large_web.jpg

    The Hubble site covers this guy very nicely. Here is what it has to say about this object.
    "Arp 148 is the staggering aftermath of an encounter between two galaxies, resulting in a ring-shaped galaxy and a long-tailed companion. The collision between the two parent galaxies produced a shockwave effect that first drew matter into the center and then caused it to propagate outwards in a ring. The elongated companion perpendicular to the ring suggests that Arp 148 is a unique snapshot of an ongoing collision. Infrared observations reveal a strong obscuration region that appears as a dark dust lane across the nucleus in optical light. Arp 148 is nicknamed Mayall's object and is located in the constellation of Ursa Major, the Great Bear, approximately 500 million light-years away. This interacting pair of galaxies is included in Arp's catalog of peculiar galaxies as number 148."

    Arp's photo of it with the 200" Palomar scope shows no more than mine, maybe less. At least this time seeing was just barely good enough for me to use 0.5" per pixel when taking my image.
    http://nedwww.ipac.caltech.edu/level...res/arp148.gif

    What I believe to have been the core of the "target" galaxy can be seen as a small yellow area at 5 o'clock inside the newly formed ring. Massive star formation dominates the ring. The "bullet" galaxy has a strong resemblance to M82 in the Hubble image. Co-incidence or is this due to the encounters both have had?

    If you look closely you'll find a great many of the faint "stars" in my image are really distant anonymous galaxies.

    14" LX200R @ f/10, L=9x10' RGB=3x10', STL-11000XM, Paramount ME

    Full image:
    http://www.spacebanter.com/attachmen...tid=2347&stc=1

    Rick
    Attached Images Attached Images

  2. #2
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    Dec 2005
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    Wow, that is an astounding object and a very nice image.

  3. #3
    Join Date
    Jan 2007
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    Nice "backyard" shot, but isn't that Hubble shot amazing?

    Robert

  4. #4
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    Mar 2003
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    Wow! Seriously, that is a great image. I am very impressed indeed that you got that with a 14" LX200. You must have had great seeing that night!

  5. #5
    Join Date
    Sep 2005
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    Very Impressive capture Rick comparing it to the Palomar. It sure does look like a double of m82 and pretty populated area also. A Super job welldone!,Great info. Clear Skies my friend

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