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  1. #1
    Join Date
    Oct 2005
    Location
    Strongsville, OH
    Posts
    1,548

    Default NGC 6992 - Veil Nebula

    I know this image isn't anything particularly special, but I thought I'd post it anyway. While I've tried to stay reasonably active on this forum, the truth is I haven't done any real imaging for almost 2 years (just simulators when testing software). This past weekend, I finally had the opportunity to get my setup operational again.

    This particular "first target" was chosen because of its position in the sky. This specific FOV of the Veil Nebula is what happens when NGC 6992 was typed into ACP and the sky PA of 345 degrees was chosen to use a PA > 180 to test the recent fix to internal guiding with a rotator.

    Technically, ACP worked perfectly - as demonstrated by round stars and perfect pointing. I was looking for the nice teal color intertwined with the red, but this particular part of the Veil only hints of it. Anyway, enjoy.

    Jim
    Attached Images Attached Images
    Last edited by Jim McMillan; Sep 29, 2009 at 13:55.

  2. #2
    Join Date
    Nov 2005
    Location
    Virgil, NY
    Posts
    4,844

    Default

    Hey Jim,

    I'm glad you're back in business. This is a great looking image. What sort of exposures/times did you use? The guiding is really great, too - something I continue to struggle with. Nice job!
    Dick
    www.VirgilObservatory.us
    Pier-mounted Meade 12-inch SCT "classic"
    w. focal reducer to f/5.3 ~ FL 1630mm
    Optec TCF-S focuser
    SBIG CFW-8A and ST7-XME
    FOV ~ 15' x 10'
    H-alpha, BVRI, RGB & Clear filters
    MaxIm and, of course, ACP!
    AAVSO Code: BRIC

  3. #3
    Join Date
    Oct 2005
    Location
    Strongsville, OH
    Posts
    1,548

    Default

    Thanks, Dick.

    Exposures:

    L = 16 x 10 min
    R = 11 x 10 min
    G = 11 x 10 min
    B = 8 x 10 min

    The reason "B" was less was because clouds rolled in. Interestingly, when blending the L into the RGB, I only used a luminance weight of 20%. I found it didn't add much detail in the nebula itself (most of it was in the "R" anyway) but it added a lot more background stars - to the detriment of the aesthetics of the image in my opinion.

    My guiding success comes from a combination of having spent a lot of time trying to master it, and most importantly, a great mount. I cut my guiding teeth on an LX200. It's virtually impossible to get the kind of results I now get with my AP1200 with your LX200. Sorry, but the mechanics of it just aren't good enough. However, the good news is that you can still achieve great guiding with your setup. Just use an AO8. Before moving to my AP mount, I used an AO7 and got results at least as good as I get now. I can't recommend it any stronger. It is THE answer.

    Jim

  4. #4
    Join Date
    Nov 2005
    Location
    Virgil, NY
    Posts
    4,844

    Default

    Let's see, Christmas is coming...
    Dick
    www.VirgilObservatory.us
    Pier-mounted Meade 12-inch SCT "classic"
    w. focal reducer to f/5.3 ~ FL 1630mm
    Optec TCF-S focuser
    SBIG CFW-8A and ST7-XME
    FOV ~ 15' x 10'
    H-alpha, BVRI, RGB & Clear filters
    MaxIm and, of course, ACP!
    AAVSO Code: BRIC

 

 

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