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Thread: NGC 5257/ 5258, A Real Challenge

  1. #1
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    NGC 5257/ 5258, A Real Challenge

    Last night, I somehow managed to tease out and sketch this very faint interacting galaxy pair N 5257/58, (VV 55, Arp 240) in Virgo. Using my 10" Dob at 170x and all the AV I could muster I could, from time to time, see this facinating pair. Both showed as extemely faint knots, like spots beside each other. I certainly did not have any hopes of seeing any faint tidal connection between them. They may show better in my 12.5" Dob next time.

    Phil
    Last edited by Galaxter; April 22nd, 2015 at 02:59 AM.
    Olathe, Ks USA

    10.1" Dob, f/4.5
    12.5" Starsplitter Dob, f/6

  2. #2
    Administrator/Co-Founder Dragan's Avatar
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    Thats excellent! I love to hear observers pushing their own limits as well as their equipment.

    Any chance of sharing the sketches with us Phil?
    Clear Dark Skies,
    Dragan Nikin
    25" f/5 Obsession #610 "Toto"
    30" f/4.5 OMI EVO #1 "Tycho"
    www.darkskiesapparel.com

  3. #3
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    I am planning on getting a digital camera in the next few months. I have lots of galaxy sketches I'd like to post Dragan.
    Olathe, Ks USA

    10.1" Dob, f/4.5
    12.5" Starsplitter Dob, f/6

  4. #4
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    Phil,

    I had a look at Arp 240 two nights ago and had my best all time view of these dancing galaxies. The bridge between them was direct vision and HII knots on the edge of NGC 5258 were resolved into separate clumps.

    Arp 240.jpg
    Clear Skies,

    Jimi Lowrey
    Fort Davis Texas

    48"F4 OMI/TEC
    28'F4 ATM

  5. #5
    Member akarsh's Avatar
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    Here's a transcript of my observation of this pair with Jimi's 48" scope. Of course, it is nowhere close in my 18"!

    Arp240.jpg
    18" f/4.5 Obsession dob "Romela"
    6" SkyQuest Orion dob
    Garrett Optical 25x100
    Homepage
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    The Astronomy Connection : Austin Astronomical Society : Bangalore Astronomical Society

  6. #6
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    I found a sketch with my 27". Bridge was visible with averted vision.

    27", 419x, Seeing II, NELM 6m5+
    NGC5257_NGC5258.jpg
    Clear Skies, uwe
    http://www.deepsky-visuell.de
    Germany

    27" f/4,2

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