Stacking 4 sessions...
 
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Mar 28 2026 APP 2.0.0-beta40 will be released in 7 days.

It did take a long time to have the work finished on this and it  will have a major performance boost of 30-50% over 2.0.0-beta39 from calibration to integration. We extensively optimized many critical parts of APP. All has been tested to guarantee correct optimizations. Drizzle and image resampling is much faster for instance, those modules have been completely rewritten. Much less memory usage. LNC 2.0 will be released which works much better and faster than LNC in it's current state. And more, all will be added to the release notes in the coming weeks...

Update on the 2.0.0 release & the full manual

We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.

Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.

 

Stacking 4 sessions...2 with Bayer Drizzle and 2 without. How do I do it?

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(@rattler1981)
White Dwarf
Joined: 7 years ago
Posts: 8
Topic starter  

Hi guys. I have 10 hours worth of data split into 4 sessions. Two sessions with Bayer Drizzle and two without. I also want to separate Ha and OIII to combine as HOO. How would I go about doing this?

Thanks.


This topic was modified 6 years ago by RATTLER1981

   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Mm, the drizzling will sharpen the result, given the data is suited for that (undersampled and nicely dithered with enough frames). It will also increase the noise a bit. The other sessions will then be less sharp, combining that will likely produce a worse result then (better compared to only combining with non dithered data, worse when combining just drizzled data). Dimensions will be different, so it needs to re-register etc.

Separating Ha and OIII can be done when you load in the data and selecting the (extract Ha, or OIII) algortithm in tab 0.



   
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(@rattler1981)
White Dwarf
Joined: 7 years ago
Posts: 8
Topic starter  

OK thanks. So if I don't Bayer Drizzle on either would there be any benefit from uping the scale only?



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Uhm, I would say no as there is no extra information present to make that beneficial, but I've never done it so I'm not 100% sure. It increases resolution, but I doubt it gives you a better result.



   
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