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Thread: Object of the Week Apr 8, 2012 - Arp 321

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  1. #10
    Member FaintFuzzies's Avatar
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    I also agree that the listed mags were a bit low, but Component E was very difficult with my 22" and saw only the core.

    Here are my observation with my 22" under NELM 6.8 skies.

    At 377x and 528x, this nice very compact group of five galaxies, occupy a space of only 2’ across. There were two edge-on members, one very dominant and a smaller elliptical and a very tough elliptical.

    Component A (MCG-1-25-9) –This dominant elliptical is very bright and round with a gradually brighter center. Averted vision gave very little more area. Estimated size is about 45” across. A 16th magnitude star lies 45” NW of the center.

    Component B (MCG-1-25-10) – A small bright round bright patch about 60” SSE of MCG-1-25-9 defines this elliptical galaxy. It has a very much brighter center in this 30” disk. It is about a magnitude fainter than MCG-1-25-9.

    Component C (MCG-1-25-8) – This edge-on galaxy is significantly fainter than MCG-1-25-9 and MCG-1-25-10. It shows a 4:1 elongated streak with a PA of 135˚. The length is about 60”. It lies between MCG-1-25-9 and MCG-1-25-10 off-center to the west, directly 30” south of the former.

    Component D (MCG-1-25-12) – This galaxy is an elongated bright patch about 40” NE of MCG-1-25-10. Aspect ratio is about 5:2 and PA = 45˚. Estimated size is about 20 by 8”. A 16th magnitude star lies less than 20” ESE from the center of this galaxy.

    Component E (MCG-1-25-11) – This extremely faint, extremely small round galaxy is about 10” across. It lies 30” north of MCG-1-25-10. This is a 50% averted vision object.

    Hickson40-528x-68.jpg
    22" at 528x Field: 6.8'
    Last edited by FaintFuzzies; April 11th, 2012 at 06:09 AM.
    Clear skies,
    Alvin #26
    FaintFuzzies.com
    Texas Hill Country

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