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Thread: LBN 786 Region and Barnard 208

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    Default LBN 786 Region and Barnard 208



    Here is an image of some ISM and dark nebulae. This field is essentially the southwest quarter of LBN 786 (aka IC 360).

    The most prominent dust is a series of Dobashi dark nebulae that also encompasses Barnard 208. The field also contains dark nebulae LDN 1498 and 1499 as well as other dark structures noted in the TGU, Dobashi, and PGCC (Planck Catalog of Galactic Cold Clumps) catalogs.

    There are several background galaxies - the most notable is NGC 1508 with a redshift distance estimate of 326 million light years. Others (UGC 02988, PGC 014451, 014493, LEDA 3089489) are annotated and have distance estimates from 180 to 326 million light years. UGC 02988 had a SN in 2014.

    Image and details can be accessed form the link below. Link to a larger image is on the main image page. For convenience, I have a link below to the annotated image - but it can also be accessed from the main image page as well.

    (Thumbnail image only)

    (Image page link)

    Annotated image:
    http://www.jthommes.com/Astro/images..._annotated.jpg

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    Default Re: LBN 786 Region and Barnard 208

    Jim - Your processing rocks!! You are the "king" of the dark and/or dusty image processing. Really nice job of making the dust easily visible while still controlling the beautiful and colorful star background. Really nicely done.

    Congratulations on your "seamless" transition to PixInsight for much of your processing. You have not skipped a beat.

    Steve
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    Default Re: LBN 786 Region and Barnard 208

    Very nice


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    Default Re: LBN 786 Region and Barnard 208

    Hello Jim,

    this is a fantastic capture of the dark nebulae and molecular clouds!
    Thank you,

    JG
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    Default Re: LBN 786 Region and Barnard 208

    Wonderful! Very well done, Jim!!
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    Default Re: LBN 786 Region and Barnard 208

    Thanks for the comments folks.
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    Default Re: LBN 786 Region and Barnard 208

    Quote Originally Posted by STEVE333 View Post
    Jim - Your processing rocks!! You are the "king" of the dark and/or dusty image processing. Really nice job of making the dust easily visible while still controlling the beautiful and colorful star background. Really nicely done.

    Congratulations on your "seamless" transition to PixInsight for much of your processing. You have not skipped a beat.

    Steve
    Thanks Steve. I have been attracted to these dark regions in a lot of my work over the years. I guess one can improve with a lot of practice. I do manage to get to other objects from time to time. I have used focal lengths from 150 mm through 2350 mm (counting some lenses I have used), but my workhorses are 530, 731, and 1,645 mm. Most of the dark nebula work comes from the 530 and 731.
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    Default Re: LBN 786 Region and Barnard 208

    Hi Jim

    Beautiful processing retaining subtle colours and textures.

    Thank you

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    Default Re: LBN 786 Region and Barnard 208

    It must take a special skill to get the color just perfect for those dark nebula. Somehow your image looks just bright enough to make the dust stand out wonderfully against the background.

    Joe
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    Default Re: LBN 786 Region and Barnard 208

    Joe, Joe,
    Thanks for the comments.



    Quote Originally Posted by BABOafrica View Post
    It must take a special skill to get the color just perfect for those dark nebula. Somehow your image looks just bright enough to make the dust stand out wonderfully against the background.

    Joe
    Well, probably nothing *special*. But it does mean doing some careful treatment for noise reduction - otherwise the low signal dust areas would look pretty grainy. Fortunately they are relatively amorphous and don't suffer much from NR. The amount selectively applied with PixInsight TGV and Multiscale NR with settings tuned to the particular data seem to work well. I suppose that the NR applied here would be too much for the filament structures of a galaxy or Supernova Remnant or emission nebula - some detail would be lost. But of course those objects are brighter and the NR is not needed.
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