View Single Post
  #1  
Old 21-04-2012, 10:54 AM
rcheshire's Avatar
rcheshire (Rowland)
Registered User

rcheshire is offline
 
Join Date: Apr 2010
Location: Geelong
Posts: 2,624
Pixinsight - Pixel rejection laser stripe and foggy/cloud lens affected stars

The SVAA club night was fun but not conducive to imaging. The image below, having achieved focus and polar alignment, stood to be the one and only of the evening, with cloud and fog rolling in.

I did get another 6 images and combined them all, laser streak dew on the lens, a thin layer of cloud/fog, and all.

PI users might find this interesting, if ever you happen to be in the vicinity of someone with a green laser.

Standard ImageIntegration settings with Windsorized Sigma clipping High Low 3.0, High 1.0.

I tried percentile and linear fit clipping, which produced better results with the foggy bright stars, rendering an airy disk appearance, but not with the 'very wide green streak across the middle of the image.'

Leave that one out of the stack is the obvious solution, but this was an interesting exercise.
Attached Thumbnails
Click for full-size image (laserdewrejection.jpg)
184.2 KB33 views

Last edited by rcheshire; 21-04-2012 at 11:12 AM.
Reply With Quote