›

Cosmetic Correction: How To Choose Method

Farzad Khosrownia
in PixInsight
Hi.

In the Cosmetic Correction is there an advantage/disadvantage to the Auto Detect or Use Master Dark?

Thanks

Farzad

Comments

  • BlockHeadBlockHead
    The master dark method is tying you to a particular dark frame. 
    If this dark doesn't exactly characterize your data- not all hot pixels will be removed.

    Auto works by looking at the neighboring values of pixels and is independent of the calibration data. 

    Thus:

    1. The benefit of Auto is that it works regardless of binning and particulars of calibration data.
    2. The benefit of Master Dark methods is that it DOES NOT look pixels in your image. E.G. For undersampled images and other special cased Auto might remove the centers of bright stars and things. Usually this isn't a problem... but it is possible. Since the Master Dark method does not look in your data- this issue does not happen.

    Please review my videos on this topic for more.
    Thanks,
    -the Blockhead
  • Farzad Khosrownia
    Adam, thanks for the quick reply.

    I had actually viewed the video and that is why I had the question; I wasn't sure if one method was superior to the other, or, if it was a matter of suitability to the situation. I will review again.

    Farzad
  • BlockHeadBlockHead
    I have not reviewed my video in a while!!
    Like years...
    So, the above is the concise answer I believe.
    -the Blockhead
  • Farzad Khosrownia
    I have noticed the difference in the interfaces that you use, and some information you are providing can be dated although not critically. Great videos nontheless.

    Farzad
  • BlockHeadBlockHead
    I have a publish date for the videos shown. This will permit you to know how old it is.
    -the Blockhead
Sign In or Register to comment.