May 27 2026 APP 2.0.0-beta45 has been released !
Fully Multi-Threaded LNC, many improvements for the registration engine, platform upgrade, and further tuning of internal memory consumption and memory release back to OS.
Apr 14 2026: Google Pay, Apple Pay & WeChat Pay added as payment options
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.
Dear Mabula,
I'm taking binned RGB images for my LRGB composites. In the whole processing chain at which phase do you advice to upscale the binned RGB frames? At the beginning, or at the end, after tweaking the combined RGB image? Which interpolation algorithm would do the best job on an upscale?
Thank yo for your answer.
Joseph
Dear All,
Is there anyone with an answer? I'm quite new to this application and I probably miss something, maybe a feature or just a simple checkbox which gives a simple answer to my question. What you guys do when your RGB frames are binned? What is your workflow?
Thanks,
Joesph
Hi Joseph,
When I have processed binned 2x2 RGB subs with unbinned L subs, I have just loaded all the frames into APP (with appropriate binned and unbinned calibration frames to match) then processed them all in exactly the same way as if they were all unbinned subs.
When you get to 4) Register APP will I think have selected an unbinned frame as the reference image and will correctly align the binned and unbinned subs.
During Integration I assume APP uses drizzle method to upscale the binned subs to match the dimensions of the unbinned.
I've also successfully processed binned and unbinned RGB subs in the same integration - no problem.
https://www.astrobin.com/394914/M/?nc=user
Hope this helps
Mike
Yes, it does, and it makes sense as well. Thank you for your answer.
following ...
May I ask what drizzle parameters are set at the 6) integrate stage?
Thanks
Tim
Hi,
Mabula has written an excellent summary about principles and pros/cons of Drizzle on this forum post:
- What is Drizzle and when can I benefit from it ?
Unless you are experimenting (its always interesting to try things) or have specific reasons to choose otherwise, stick with the defaults.
Mike
PS Above I said 'During Integration I assume APP uses drizzle method to upscale the binned subs to match the dimensions of the unbinned.' On reflection, I think I should more correctly have said 'I believe APP uses an interpolation technique (Lanczos 3) to to upscale the binned subs to match the dimensions of the unbinned subs.'
