2026-10-09 APP 2.0.0-beta48 has been released !
This is mainly a bug fix release for the reported bugs in beta47. In addition it has a significant User Interface performance improvement noticable when you need to process 1000s of images in APP.
2026-10-03 APP 2.0.0-beta47 has been released !
This is a very big release... many code optimizations/rewrites, many parts of APP are much faster and more precise, especially star analysis and registration are much faster ! Big mosaics will go much faster 🙂
And we introduce a new preview filter, which includes the new Adaptive Deep Sky Stretch and a General Levels Stretch, this has been long over due. The old preview filter (the panel on the right side to stretch and preview your data) has not been updated for a couple of years and it is a critical part of any APP session.
Adaptive Deep Sky Stretch or ADSS is a much more intuitive stretch algorithm. It is also color preserving (which is a great new addition in itself ! ) which means that the highlights are no longer bleached, color is maintained from the linear data while stretching. You can simply stretch your data using the sky background level and signal width sliders which work much easier and more intuitive. You no longer need to fiddle with the old complicated sliders with zoom buttons. All the zoom buttons for the sliders are made redundant. And you can enter slider values in the slider value fields yourself. I will make a youtube video in the coming days to explain and fully introduce ADSS. Once the video is ready, it will be highlighted on the forum.
RGB Combine upgrade !. The RGB Combine Tool has been rewritten mostly. The tool is faster and easier to use and most importantly, the Luminance slider to inject a luminance channel or channels into the RGB composite is now working correctly. It no longer bleaches the RGB colors. Combined with the new ADSS preview, you will get much better and easier great composites with great color! I will also explain this in a new youtube video.
Seit ich der Installation der APP-Versionen 2.x.x habe ich nach dem Stacken meiner Aufnahmen einen großen violetten Fleck in der Bildmitte, wenn ich Flats und Darkflats hinzugefügt habe, unabhängig von der Updateversion. Ohne die Kalibrierungsaufnahmen ist der Fleck nicht vorhanden.
Nachdem ich eine alte Installation der 1.x.x -Version von APP installiert hatte, ist diese Aufnahmeserie mit den zugehörigen Flats bzw. Darkflats einwandfrei verarbeitet worden, so dass die Updates der Serie 2.x.x einen Fehler bei der Verarbeitung von Kalibrierungsaufnahmen zu haben scheinen.
Die Flats bzw. Darkflats wurden ohne eine Änderung der Einstellungen (Fokussierung, Verdrehung, etc.) am nächsten Morgen aufgenommen.
Die Aufnahmen sind mit einem 10" Newton mit 0,75x-Nexus-Reducer, einer PlayerOne-Poseidon C OSC-Kamera und einem Optolong L-eNhance HaOIII-Filter gemacht worden. Der Fehler ist bei allen Color-Bearbeitungsroutinen aufgetreten.
Hi Dietmar @didi,
Thank you very much for reporting this.
This looks very odd. I have never seen this and we test many data frequently.
So it definitely is useful to see this dataset myself so I can understand the issue here and why this happens with your data.
Can you upload the data here:
https://upload.astropixelprocessor.com/
username: uploadData
password: uploadTestData
Please make a folder with your name and issue like : Dietmar-flat-purplePatch
and upload the data there and let me know once uploaded.
I have opened an issue on my list to solve this 😉
Thanks,
Mabula
