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Re: [ccd-newastro] M42 processing

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  • Dave Bailey
    Thanks to Mike, Adam, Vincent and Glen for responding. I don t have PixInsight so elected to follow Glen s suggestion and try Jerry Lodriguss routine for
    Message 1 of 6 , Feb 28, 2009
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      Thanks to Mike, Adam, Vincent and Glen for responding.

      I don't have PixInsight so elected to follow Glen's suggestion and try Jerry Lodriguss' routine for compositing 2 different exposures.
      I had 10 X 0.5second and 10 X 60 second exposures of each RGB filter. I ran out of time that one clear night before getting LUM exposures. The final RGB came out pretty well. The Trapezium shows distinctly and the overlay blends in. Good enough for one night.

      Thanks for helping.
      Dave Bailey

      ----- Original Message -----
      From: Vicent Peris Baixauli
      To: ccd-newastro@yahoogroups.com
      Sent: Sunday, February 22, 2009 3:17 PM
      Subject: RE: [ccd-newastro] M42 processing

      Hello Dave,

      I have made a script for PixInsight that allows us to make a *linear* HDR composition in a completely automatized way. Let me show you this example:


      The raw images are at the bottom. The resulting image is processed automatically. The only thing you must indicate to the script is which files you want combine. The script will sort the images and compose the HDR image. And if you want, it will compress the dynamic range through my HDR-Wavelet algorithm.

      For achieving good results, you need aligned and *properly* calibrated images.

      Please, read the post I wrote in the PixInsight forum regarding the script. I talk about the HDR composition algorithm and show some results:


      Good luck!

      To: ccd-newastro@yahoogroups.com
      From: davealta@...
      Date: Sun, 22 Feb 2009 03:22:00 +0000
      Subject: [ccd-newastro] M42 processing

      Is there a document or tutorial that describes how to combine short
      exposures that resolve the Trapezium, and longer exposures that get
      faint nebulosity, into an image that shows both?
      Dave Bailey

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