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Feature request

Posted: 21 Apr 2021, 06:02
by einari
Hello

Are the any plans to implement multiple session stacking ?

Regards
Tapio

Re: Feature request

Posted: 22 Apr 2021, 20:57
by fabdev
Hello, do you mean sets of images with different temperature, so different dark frames, etc ?

Re: Feature request

Posted: 24 Apr 2021, 15:42
by einari
Yes. And flats too (sometimes dust motes move...).

Re: Feature request

Posted: 26 Apr 2021, 15:43
by fabdev
OK. This is not planned in the near future, so for the moment I can suggest the fastest procedure available:

1) For every night do a usual Preprocessing with the method Sum or Sigma+Sum. Maybe save the setting for later use.
2) Repeat for the other nights, leave all Preprocessing results opened in the Astroart desktop.
3) Now, up to 2-3 nights it's faster to stack the 2-3 results using the menu commands, click Menu/Images "Align all", then Arithmetic "Add image".
For more than 4 nights it's faster to launch a Preprocessing on those images: Click "Preprocessing" then the images in memory will be marked with square brackets, for example: [NoName00.fit] . Launch a preprocessing on these.

Another solution, which may be faster but needs more disk space, is to use Preprocessing to correct only the dark frame and the flat field of every night, and the option "Save each image". This will create P_....fit images which can be stacked later with a single Preprocessing.

Re: Feature request

Posted: 15 May 2021, 16:40
by einari
Thank you for suggestions.

I propose an other :D

In gradient reduction using points could there be feature for spreading points based on adu levels, or some kind of automatic spreading?

Re: Feature request

Posted: 17 May 2021, 17:13
by fabdev
Yes, it will be added. The most important task will be to avoid stars while keeping a uniform distribution of points.
For the moment I suggest start placing points along the borders first, then following a spiral, proceed toward the center.