varying illuminatio...
Clear all

19 June 2021: Our upload server has been migrated successfully to our new office with higher upload and download speeds (nearly 10MByte/sec up/down ) ! We now have 1 general upload user called: upload with password: upload. The users upload1 - upload5 have been disabled.

31 May 2021: APP 1.083-beta2 has been released ! APP 1.083 stable will follow soon afterwards. It includes a completely new Star Reducer Tool, New File Saver Module, Improved Comet registration and much more, check the release notes here!

DOWNLOADS are available HERE!


varying illumination in a series: Local Normalization Correction? which settings are recommend?  


Main Sequence Star Customer
Joined: 4 years ago
Posts: 26
July 28, 2021 13:56  

Hello again,

I have a stack of 35 L frames (OSC, ASI MC2600, L-Pro) with varying illumination (intra – frame and inter –frame) because of moon + passing cirrus clouds:

- there is a individual variation of illumination from frame to frame


- a general variation because of changing background illumination

My settings for Normalization are default:

  • regular
  • multiply scale
  • BMV
  • neutralize BG
  • lanczos-3
  • no under/overshoot
  • apply red. to fr.

… integration:

  • automatic / default
  • local normalizaton rejection: Unchecked
  • no LNC
  • no MBB

What kind of settings do you suggest concerning normalization and integration?

Should I enable

- local normalization rejection



thanks, Peter