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.
With the clear weather over here in the BNL my APP has been doing overtime as many others I guess.
To my surprise APP started to fail ALL my FITS files on "Star Analysis" for the last two sessions. Alle sessions before went fine. Nothing changed on camera or software. It's an ASI2600MC. Files attached from each session. Also tried different nbrs of "star count" ranging from 20 over 500 to 2000
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Appreciate any similar cases and perhaps solution. I'm using the latest APP version 1.083.4
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Kind regards,Â
Joost
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www.drogenberg.be
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@joost-verheydengmail-com The zip files only contain lights. Do you use any calibration files? If yes, can you please upload a set of, say, 5 lights and 5 calibration files? Please use the upload instructions at the top of any forum page and create a directory called joost-verheydengmail-com_star_analysis and place the files in there. Let me know here when the upload is done please.
When I load the three IC410 files in tab 1 and go straight to tab 6 and click the integrate button, the integration goes perfectly OK without any issues with star analysis. I see that all files are marked as MONO while you say you use an ASI2600MC. It looks like you need to tell SGP that you're using a color camera.
EDIT: I went to tab 0 and selected RGGB in pattern and enabled "force Bayer/X-Trans CFA" and now a color image was produced. Again no issue with star analysis.
Hi Wouter Thanks for the fast reply. I found an issue with my darks ... so let me try a new run. Keep you posted.
Wouter & all, my darks were horrible and that apparently made the star analysis go bananas. So entirely my mistake!Â
The only addition I could make is that APP might inspect calibration files on obvious mistakes, like not only if the technical values as Gain values, exposure times are correct, but also for instance if darks are not to bright or have brightness variations, same with bias.Â
My confidence in APP stays untouched and I appreciate the ability - with my limited time available - to almost one-button process my images. When they leave APP in addition almost no further finishing work is required.Â
Thanks!
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That would be great indeed, but it's not really possible for APP to judge this properly, it expects calibration data to be made properly to judge noise levels. It does provide warnings for issues with some forms of calibration and usually when things don't work properly, you can already tell it's likely one of the calibration data.
