M20 at 95xpwr magn.

Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Jun 23, 2018.

  1. ROBERT T SCHAEFER JR

    ROBERT T SCHAEFER JR Cyanogen Customer

    Joined:
    May 13, 2018
    Messages:
    213
    Trifid Nebula M20 CanonEOSII Rebel T7i , Baader Fringe Killer , TeleVue 2.5XPwrMte for 2960mmFL at 95xpwr two 11minISO1600 RAWMono-Autosaves_Sum stacked'
    thru a 152mm A+M Refractor(OfficinaStellare) . It was hard to get the 'blue' area to show and it made the 'red' area look peach colored . Centering the image better might help
    but I was trying to see how far the 'blue' would go . The image is the original size as Bin1 and cropped slightly on the edges . z
     
  2. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    3,490
    Hi Robert, keep working on these images, you're definitely improving.
    The image histogram is clipped at both ends - somewhere in processing, about half the dynamic range was lost (eg the range from darkest to brightest).
    Also, it looks a little soft - perhaps there are some images that are a little sharper, and you could eliminate them, or sharpen the finished product.
    For fun, I adjusted the .FIT with Screen Stretch and then Saved As a JPG with Manual Stretch, Screen stretch. This makes better use of the available range. There is a lot more to experiment with.
    Keep the images coming!
    CHversion.jpg
     

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