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.
I guess something goes wrong with my Flat but I can't explain what.
I added my Flat and it's a kind of green I think it should be white ?
How can I try now an Integration without a Flat. Without start over from zero.
You can just integrate without flats, you can even do that without any calibration files. But when taken properly they ofcourse help a lot. In this case I'm not sure what happened, the integration looks really strange, hard edges etc. The flat can look greenish, that's not necessarily an issue, I don't see any dust though so either your sensor is very clean or you're not taking the flats at the focus of your lights.
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Here comes some Problems together, some I figured out right now.
My sensor is not fully used because this the not used edges.
My goto drive lost more and more his position after hours, maybe because the windy day I will check some screws. This is the reason for the Egg shape of the Halo
Now I did one Processing without Flat, now it looks like in the First case everything goes right.
I just can guessing this red Halo comes from the Achromatic Telescope what I use.
After some Crop and PS i got a Result looks ok for that weather. (I was shot 4h but the most pictures can't use)
The Flat was Taken after Focusing.
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So the top picture is without flats and the bottom with flat? If so, the flats have a problem then.
Top one with Flat, without a flat i got the green touch inside
