Author Topic: PreProcessing - Sigma High and Low Values Question  (Read 508 times)

Offline jwaters125

  • PixInsight Addict
  • ***
  • Posts: 145
PreProcessing - Sigma High and Low Values Question
« on: 2019 October 02 23:41:14 »
During full manual or batch preprocessing how do you know if the ImageIntegration Sigma High and Low values were too aggressive and you are actually eliminating 'useful signal' and not just noise?

For Darks, BIAS and Flats I use the default Sigma values - 3.00 each.  I am talking about the other steps.

 

Offline dave_galera

  • PixInsight Addict
  • ***
  • Posts: 261
    • QDigital Astro
Re: PreProcessing - Sigma High and Low Values Question
« Reply #1 on: 2019 October 03 06:05:57 »
It is a logical process which is described in this post:

https://pixinsight.com/forum/index.php?topic=8360.0
Dave

Offline jwaters125

  • PixInsight Addict
  • ***
  • Posts: 145
Re: PreProcessing - Sigma High and Low Values Question
« Reply #2 on: 2019 October 03 10:46:12 »
Thanks Dave.