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! First of All, i want to thank you for this great software.
I have a problem with my processed images. After the working process, there a mysterious circles on my picture.
I have checked my optics by a professional. He says the mistake could be caused by the stacking software.
Can you please help?
Best wishes
Gavva
The circles are not visible on the Single frames.
Hi Gavin and thanks for the kind words,
This is usually not an issue with software like the person told you. If that would be the case, the software is doing something really bad. This must be a data issue, either optically or in your calibration data. You can share a few frames with us if you want, just upload 5 light frames (raw data) and your master-flat, master-bias and master-dark if you want;
Go to https://upload.astropixelprocessor.com and use upload1 as username and upload1 as password.
Create a directory named “gavva-circles” and upload in there. Thank you!
