Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Another flat question... Using Pixinsight

  • Please log in to reply
3 replies to this topic

#1 youellet

youellet

    Explorer 1

  • *****
  • topic starter
  • Posts: 81
  • Joined: 03 Nov 2022

Posted 16 April 2024 - 05:48 AM

Usually I have no problems with WBPP. Now I am getting thses "three dimension" rings.

 

 

Lum.jpg

 

Luminance channel. Using ASI2600MM Pro. 

Stacking with Bias frams (50), flat frames (30).

After stacking, gradient removal using GraXpert and stars removed with Starxtermminator.

The rings match the flat pannel dust rings.

 

I tried using 100 and 300 for pedestal without any difference in the results.

 

Any ideas?

 

Thanks!

 

 

 



#2 acrh2

acrh2

    Mercury-Atlas

  • *****
  • Posts: 2,739
  • Joined: 16 Mar 2021

Posted 16 April 2024 - 06:27 AM

The embossed look like this usually means that the dust motes have moved. But you have so many, which makes me think that the whole filter has moved. I've seen something like this happen only once when I momentarily lost power to my rig. The filter wheel is supposed initialize and put itself in position 1 (Lum for me,) but something went wrong with that. Doing a single full cycle of filters fixed it. Also, do you have the option for unidirectional movement turned on in Ascom properties?



#3 drmikevt

drmikevt

    Apollo

  • *****
  • Posts: 1,328
  • Joined: 22 Jun 2015
  • Loc: Burlington, VT

Posted 16 April 2024 - 06:50 AM

Try processing it without the flat.  If those patterns go away, at least you know that it's a flat issue and maybe is the issue above.  Try reshooting the flat.

 

I doubt this will help, but you may also want to try resetting WBPP to its default parameters and try again.  In general, this is always a good thing to try if things come out wonky.


  • Juno18 likes this

#4 Jackg

Jackg

    Explorer 1

  • -----
  • Posts: 96
  • Joined: 21 Dec 2020
  • Loc: Finksburg, MD

Posted 16 April 2024 - 11:11 AM

I've seen something like that with my ASI2600MM. It was related, for some reason, to using darks. I stopped using those and the pictures greatly improved.

 

Jack




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics