Author Topic: DSLR Widefield with ACC and LHE  (Read 2729 times)

astropixel

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DSLR Widefield with ACC and LHE
« on: 2011 September 23 03:15:20 »
    Hi. A widefield with M8 and M20 centre piece. 2 hours 20 minutes 41 frames. This DSLR image was difficult to process. Perhaps more data will help.

    5D MKII 200mm f/5.6 ISO800 210sec - calibration frames acquired in the same night. Perhaps a higher ISO would have been better?

    Calibration in PI - Bias, darks and flats.
    DSLR workflow to integration with Linear pixel clipping
    Zbynek's ACC - striking difference in contrast and star colours.
    ABE,
    ATWT - Linear noise reduction
    HT
    HTWT - 6 layers x2
    DarkStructureEnhance 0.25 x 3
    LRGBCombination
    HTWT 2 layers x1
    LHE 2.5 8bit gave the image a much needed lift defining otherwise  flat areas.
    Curves - Saturation - rescale[/li]
« Last Edit: 2011 September 24 15:27:19 by astropixel »

Offline Enzo De Bernardini

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Re: DSLR Widefield with ACC and LHE
« Reply #1 on: 2011 September 23 15:15:07 »
Nice work. I like your very small stars  :)

Enzo.

astropixel

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Re: DSLR Widefield with ACC and LHE
« Reply #2 on: 2011 September 24 15:20:17 »
Thanks. I have attempted to keep the image as faithful as possible. But I'm still not convinced that all the gradient has been removed. The full size image 21mb zoomed shows nice round stars and Sharp resolution, but I have no way of posting it. The camera and lens performed well for an unguided shot.

astropixel

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Re: DSLR Widefield with ACC and LHE
« Reply #3 on: 2011 September 27 16:22:45 »
It's just not quite right - the posted image lacks lustre. Can't say I'm happy with the results, but I'm not sure what the problem is.