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 am exeperiencing a strange bug in APP 1.077 when applying neutralizeBG in calibrated images
Everyting seems ok until, after calibration, i check visually the calibrated with neutralizeBG: instead of "equalizing" the RGB curves, the blue one becomes dominant in the hystogram, the sky background becomes blu, object on the image becomes yellow.
If i use the same masters (calculated with 1.077) and follow the same procedure on same lights with older 1.075, the problem disappear, and the overall nbg seems much better.
I check on three different pc (intel notebook and AMD+radeon GPU) and all GL settings, but with same result. The effect is present also in the saved tiff / jpeg.
Am i doing someting wrong in my procedure? There is something "wrong" in my raw files?
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Here an example with two images, same target of two different night, same equipment and exposure time.
M86-1-60-3-C0.fit = GOOD FRAME with 1.077
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M86-1-60-1-C0.fit = BAD FRAME with 1.077
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M86-1-60-3-C0.fit = GOOD FRAME with 1.075
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M86-1-60-1-C0.fit = BAD FRAME with 1.075
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There were some changes made in the models between these versions yes. Just to get this straight, are you using a gain of 3 for capturing data?
Yes!
QHY10 / Gain = 3 / Offset = 129
Same settings for both images
So there is sometingh wrong in using gain=3?
I select this value following the manufacturer procedure to set gain and offset to maximise the dynamic range of the camera.
I don't think so no, I was simply not used to these numbers as I always read about people using gains in the 100+ but that's something which differs for some sensors apparently.
Do you still have the same issues with 1.078?
