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.
Hi
I'm loading the light frames and supporting frames to extract Ha from a dual band filter but I'm not sure what box I should select here
Can you help?
Hi,
that doesnt matter, if you always select the same box for different sessions. As far as I found out the selected box is responsible for the colour in the file list in the APP window. I alwas select Ha 😉
But: it would be good to have a seperate Ha/OIII and (since there are filters in the meantime) Hbeta/SII boxes to select!
@juergenn @paul-grace APP defaults to what's in the FITS header of the images. If your imaging software doesn't add info there, it will default to RGB which is probably correct enough for the purpose of separating Ha from OIII (or other combinations of blue/greenish bands and red bands).
The separation of Ha and OIII happens at processing time, not at image loading time. That's why Jürgen is correct in stating that it doesn't matter.
It would be great if Ha/OIII could be selected and then have APP set the defaults for separating those channels automatically. Perhaps an RFC should be created for that 😉
if you are shooting OSC you should tic No filter First.
the Window with filters will not appear then.
its in tab1 where you load the filés. Above the lights button.
/Stefan
