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Cosmetic Correction and Binning

Alan Karty
in PixInsight
Adam,

It appears to me that if you use the Master Dark method or the Defect List, you are restrained by the binning of the master dark or the master bias respectively, whereas for Auto Detect there is no such limitation.  If so, then you would have to have a separate Cosmetic Correction template for each binning, and you would have to run BPP separately for each binning.  Is this correct?

Alan

Comments

  • BlockHeadBlockHead
    HI Alan,

    Yes. In that case, instead of running BPP twice- you could run BPP once only calibrating and then running two corrections (one for each binning) with an image container. I think this might be a little faster since you can load all of your files in one go with BPP.

    By the way the Master Dark method is a "fixed" pattern correction. However... hot pixels seem to always change through time... so I prefer the Auto Detect which uses a statistical method to identify hot pixels. This is great for oversampled data. Undersampled data... well, then a fixed pattern is better. 

    I think this is right...if I am wrong I can look at it again a little later.
    -the Blockhead
  • Alan Karty
    Adam,

    Thank you for your reply.  A follow-up question.  Can adjusting the Hot Sigma in Auto Detect compensate for undersampled data?

    Alan
  • BlockHeadBlockHead
    Sounds dangerous to me. Undersampled stars and hotpixels really do look similar. I guess it is something to experiment with. 
    -The Blockhead
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