Feature request

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einari
Posts: 29
Joined: 28 Jan 2019, 10:46

Feature request

Post by einari » 21 Apr 2021, 06:02

Hello

Are the any plans to implement multiple session stacking ?

Regards
Tapio

fabdev
Posts: 282
Joined: 03 Dec 2018, 21:43

Re: Feature request

Post by fabdev » 22 Apr 2021, 20:57

Hello, do you mean sets of images with different temperature, so different dark frames, etc ?

einari
Posts: 29
Joined: 28 Jan 2019, 10:46

Re: Feature request

Post by einari » 24 Apr 2021, 15:42

Yes. And flats too (sometimes dust motes move...).

fabdev
Posts: 282
Joined: 03 Dec 2018, 21:43

Re: Feature request

Post by fabdev » 26 Apr 2021, 15:43

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.

einari
Posts: 29
Joined: 28 Jan 2019, 10:46

Re: Feature request

Post by einari » 15 May 2021, 16:40

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?

fabdev
Posts: 282
Joined: 03 Dec 2018, 21:43

Re: Feature request

Post by fabdev » 17 May 2021, 17:13

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.

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