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

How to process FLAT FRAMES using Lightroom / Photoshop for Solar Work

  • Please log in to reply
3 replies to this topic

#1 Daniel Dance

Daniel Dance

    Vanguard

  • *****
  • topic starter
  • Posts: 2,152
  • Joined: 08 Jun 2016
  • Loc: Eastern United States

Posted 16 April 2024 - 02:39 PM

I'm kind of stuck in my workflow on how to approach the processing of flat frames used in the imaging of the Sun.

 

 

I've taken say 25-36 flat frames using a DSLR.

 

And I want to use at least some of those frames to calibrate RAW light frames.

 

 

Is there a way I can do this directly in Lightroom or Photoshop?  I'd prefer not to go through PixInsight and debayering these things and what not.  Of course, if thats the only way to do it, then i'm stuck with it.

Any recommendations?

Thanks

Dan

 



#2 dswtan

dswtan

    Vanguard

  • *****
  • Posts: 2,039
  • Joined: 29 Oct 2006
  • Loc: Morgan Hill, CA

Posted 16 April 2024 - 03:16 PM

Check out the Full Disk Tutorial here. And the others!

 

https://brierleyhill...-tutorials.html

 

This really helped me. 



#3 Anhydrite

Anhydrite

    Ranger 4

  • -----
  • Posts: 312
  • Joined: 26 Aug 2017

Posted 16 April 2024 - 03:58 PM

Check out the Full Disk Tutorial here. And the others!

 

https://brierleyhill...-tutorials.html

 

This really helped me. 

That's a great series.....however it doesn't answer the question at all.

 

Unless I missed it somewhere in there.



#4 bignerdguy

bignerdguy

    Viking 1

  • *****
  • Posts: 943
  • Joined: 31 Oct 2019
  • Loc: Lewisville, TX

Posted 17 April 2024 - 12:29 AM

Here is the info from this post:

 

https://www.cloudyni...-in-photoshop/ 

 

Hi,

 

Flat-field processing is to divide your image with flat frames.  So you should try "Divide" in apply image, not Overlay nor Screen.  It might work, but I do not believe it will work as good as DSS.  For all the calibration (including flat fielding) to work properly, the raw files have to be converted linearly before the calibration.  Unless you can do this in Photoshop's Camera Raw, flat fielding won't work properly.

 

Cheers,

Wei-Hao




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