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Thread: Object of the week March 22, 2020- IC 2144 What is it?

  1. #1
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    Object of the week March 22, 2020- IC 2144 What is it?

    IC 2144
    Taurus
    RA 05 50 12
    Dec + 23 52 00
    Mag 12.8
    Type ??

    ——————————————————-
    So what kind of object is IC 2144? Galaxy,PN,Emission Nebula,Or Other? This is what I found out. The noted visual observer EE Barnard found IC 2144 but I have been able to find out little about the discovery. I am not sure if he found it visually or on a image. This is what I have learned about this unusual object. It was first thought to be a galaxy with a foreground star on it. In 2008 George Herbig Of the Herbig -Haro catalog did an observation of it with the Keck I telescope. He found that the foreground star MWC 778 was a YSO (young stellar object) Imbedded in a reflection nebula. It is though that the young star might be illuminating the nebula. This is just speculation.

    82A823A2-D5BC-48F5-985F-356ECE326DC2.jpeg

    Last night I observed this unusual object under fair conditions. I notated at 375X with my finder eyepiece that with direct vision I could see a small star that had a nebulas look. I was surprised at how small it was. There is a triangle of stars that point toward IC 2144 that make it easy to ID the field. The best view was with 610X. With this power I could see a bright bulge on the West Side of the star. On the East side I could detect with AV a faint nebula. I could hold this faint nebula about 90% of the time. Although this object is small and not much detail it was a exciting observation for me as I know of few observations of this object. I did try the NPB and a O III filter to see by chance if I got a response but as I figured with a reflection nebula I did not get a response.

    So if you want the see as the late George Herbig called a very unusual object that not many people have seen.

    “Give IT A Go”
    Last edited by Jimi Lowrey; March 23rd, 2020 at 12:16 AM.
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  2. #2
    Member Steve Gottlieb's Avatar
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    Here's an H-alpha image taken with the Subaru telescope on Mauna Kea in 2006. Although it shows all kind of structure, I mainly saw the bright central star + halo, which is tiny as Jimi mentioned, and perhaps some very dim outer nebulosity.

    Based on this image, I'm surprised NED still has it listed as a galaxy!

    IC 2144.jpg
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  3. #3
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    Indeed a weird thing Jimi.

    Observed it yesterday. With my 27-inch and 488x (ZAOII) I could pick up a very small, only around 5" large, patch of light directly NW of the 13mag star. Direct vision. With averted vision I could see a larger, but fainter streak to the E, perhaps around 20" long.

    [OIII] gave a negative filter result but Hß shows a diffuse glow around the star. No structure detected. So it seems to be more like a RN like you already suspected Jimi. I add a sketch later when all observation are analyzed and redraw.

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  4. #4
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    I look forward to seeing your sketch Uwe. Yes this is indeed a weird one!
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    Jimi Lowrey
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  5. #5
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    Below the given later sketch of IC 2144.

    27", 488x, NELM 6m5+, Seeing III
    IC2144.jpg
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  6. #6
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    That is just like what I could see Uwe. Very real looking sketch.
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    Jimi Lowrey
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