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Thread: Object of the Week, June 30, 2024, the NGC 3511 & NGC 3513 galaxy pair in Crater

  1. #1
    Member Paul Alsing's Avatar
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    Object of the Week, June 30, 2024, the NGC 3511 & NGC 3513 galaxy pair in Crater

    NGC 3511
    R.A.: 11h 03m 23.8 Dec.: ?23° 05? 12?
    Size: 5.8? × 2.0?, Magnitude: 11.5

    NGC 3513
    R.A.: 11 03 46 Dec.: -23 14 43.7
    Size: 2.9' x 2.4', Magnitude: 12.0

    Recently I have been tasked with authoring my OOTWs on Sundays while traveling to astronomical events! This time I will be on the road to GSSP… last time was the total eclipse in Texas and the time before that it was the annular eclipse in Utah! Since I am leaving today I’ll be posting this 2 days early!

    NGCs 3511 and 3513 are a little low right now but are still a great pair in the same field of view since they are only about 11 arcminutes apart. Each is about 40 million light-years distant and are gravitational bound. Both objects were discovered by Herschel on the same sweep in December, 1786.

    NGC 3511 is a spiral galaxy, about 3 times longer than it is wide, and NGC 3513 is a nearly round barred spiral, which is about half the size of its big brother.

    In the eyepiece of my 25” f/5 Obsession they were an easy target, but being low in the sky for me I saw little detail in either, and the bar in NGC 3513 was not apparent on that particular night. Still, I enjoy two objects for the price of one, and these are a fine pair. Here is a nice photo from Walter A Keller


    Walter Keller.jpg



    As always, give it a go and let us know.
    Paul Alsing
    25" f/5 Obsession
    http://www.pnalsing.com/home

  2. #2
    Member Raul Leon's Avatar
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    Hi, here's my observation from 4/4/2011: Ngc 3511 and Ngc 3513 galaxy pair in Crater ; Ngc 3511 is mag.11.5 and elongated with many bright knots . Ngc 3513 is 12th mag. and round and diffuse. I used a 14mm Meade Ultrawide eyepiece with my 14.5 StarStructure f/4.3
    ngc 3511.jpg
    Raul Leon
    14.5 Starstructure Dobsonian f/4.3

    http://thestarsketcher.blogspot.com/

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