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Thread: 17 minutes of M16

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    Default 17 minutes of M16



    This is 17 minutes of 15 second shots of M16 combined with 5 darks. The scope is a se6 with a 6.3 Focal Reducer. The camera a Canon T3.

    M16s.jpg

    The image has a lot of vignetting because I ended up having to go back to using a SkyGlow filter because I can't seem to find a filter that fits the larger DSLR adapter. Unfiltered images were simply unusable do to light pollution even with a fake flat.


    I stacked the files in DSS and then used CS5 curves and levels and a artificial flat to get to this image. My feeling is that I should be able to extract more data so any Photoshop tips would be greatly appreciated.

    Thanks!

    I have attached a crop of my original Tiff below.

    M16Small.tif
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    Default Re: 17 minutes of M16

    Pretty cool, thanks for sharing.
    John
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    Default Re: 17 minutes of M16

    I played with your Tiff image some and wasn't able to extract much more nebulosity than you did. On a separate note, the first image you posted only uses up to about 180 out of 255 in its histogram, so you can get some more brightness by moving the right arrow in Levels to stretch the histogram out so it uses the full range. Though that doesn't give a dramatic improvement. I don't think much more is possible with this data.

    If you're limited to 15 second subs then you might try a higher ISO (you didn't say what ISO you used). And if you can do longer than 15 second subs that will also help (a lot).
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    Default Re: 17 minutes of M16

    Quote Originally Posted by akulapanam View Post
    This is 17 minutes of 15 second shots of M16 combined with 5 darks. The scope is a se6 with a 6.3 Focal Reducer. The camera a Canon T3.

    M16s.jpg

    The image has a lot of vignetting because I ended up having to go back to using a SkyGlow filter because I can't seem to find a filter that fits the larger DSLR adapter. Unfiltered images were simply unusable do to light pollution even with a fake flat.


    I stacked the files in DSS and then used CS5 curves and levels and a artificial flat to get to this image. My feeling is that I should be able to extract more data so any Photoshop tips would be greatly appreciated.

    Thanks!

    I have attached a crop of my original Tiff below.

    M16Small.tif

    Very nice picture, thanks for sharing!
    Chris
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