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.
Hello,
Upon completing the stack APP loads this image into the viewer. Even if I select another image and then reselect the one in question.
When I open the Fits file in Pixinsight it displays correctly. The main issue is that I can't use the tools for background calibration etc.Â
Just so you know,
Andy
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Could you test this with beta 6 that we have available now? See the top of the forum, if it still doesn't work I may ask you for some of your data to check.
Hello,
I continue to see the same display of the final stack as shows above. Also, now in Beta 6 I also cannot display some images. I have attached the error message.
 This image is from a different computer with same display issue. It is also running beta 6
Thanks,
Andy
Thanks for testing. Would you mind uploading a few of these files for us to check? Maybe also some lights and calibration masters so we can see what might be the issue.
Hi,
UPDATE - Today I tried the same data and did NOT drizzle. The final stack displayed correctly.
Just so you know!
Â
Andyt
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Thanks for the update! Sorry, didn't have time yet to analyze but will do so today, so drizzling may have been the problem here. Did you have data that is undersampled and did you dither well during capturing the data?
Hi Andy @andynowlen,
That weird image display is in fact an OpenGL issue... If you turn of OpenGL with the top left OpenGL button, the image will display correctly 😉
The reason for the OpenGL issue, will likely be a bad OpenGL graphical driver installed on your computer, so try to update your graphical driver using a driver from the hardware manufacturer of your graphical chip (so don't !!! use a microsoft driver for an intel graphical chip for instance).
Mabuila
