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.
When creating a bad pixel map with my ASI294MC Pro something strange happens. The Amp glow is recognized as a hot pixel and if my Lightframe calibrated with it, disturbing pixels on the previously not see.
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Hello Mabula, should I do without the Bad Pixel Map in this case?
Good question, I'm not sure if the BPM should include things like amp-glow actually, @mabula-admin knows all about that. But as a general rule, if the calibration frame causes a problem in the end-result, it's better to leave it out.
Hello Mabula, did you have a look at Bad Pixel Map?
Hi @minusman,
I have tested this on data that I have of a ZWO asi183mm which has very strong amp-glow.
I am seeing the problem that you have as well, allthough not so prominent, shown first is MasterDark, then BPM:
This was with APP 1.068 and a hot pixel kappa of 2.0.
I get the following calibration result (data provided by Yves van den Broek @yves_van_den_broek ) , first is shown an uncalibrated frame, then calirbated with a MasterBias, MasterDark and the Bad Pixel Map and with the Adaptive Data Pedestal on. The Adaptive Data Pedestal is needed here.
So this is fine I think.
Is the BPM in your case messing up data calibration of the light frames?
Can you show an example/screenshot ?
The issue most likely has to do with some changes that I made in the Bad Pixel Map creation. I should be able to adjust here. So I will have a look and test if I can improve this.
Mabula
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Hello Mabula, I once processed another record of dark frames with cooling turned off. Since the problem hardly occurs.
I will again make new Darks and flat frames for security.
When creating BPM, do I need a Master Bias or Master Dark Flat? If I omit it comes a warning.
