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.
Hi Vincent, in the new beta the preview of I-calibrated does not work. Linear works fine.
When I try to save the frames, nothing happens.
I also tried to activate and deactivate functions, but it did not help.
Ok, thanks for sharing. We will investigate what the issue might be right now.
Hello Vincent, I have uploaded a few frames for testing. The folder is called like the post topic
Maybe this will help. 😉
That is great, thanks! I tried it myself on other data and didn't have an issue, but if it show on yours, it'll be addressed for sure. 🙂
Hi @minusman,
I have found the bug, it has to do with conversion to 32bits data since your earlier created MasterDark is 32bits. I will try to fix this with high priority and release an updated beta.
Thanks for sharing this.
Mabula
Hi @minusman,
Good news, I have fixed the problem 😉 Thank you for sharing the issue, it was quite an important bug to fix. It had to do with my code optimizations to speed things up and it didn't take into account that for Bayer data, a small border needs to be cropped while normalizing to 32bits... so this bug would manifest itself on calibration of Bayer data when the data needs to be normalized to 32bits in the calibration fase.
I will build a new beta installer today and will let you know once available 😉
Mabula
That looks good, I am looking forward to the new beta version. 😀
A question to create Masterflat in the beta.
When I calibrate Masterflats, if I leave the integration on Automatic, is the Blur method used, or is it only available in manual mode?
Hi @minusman,
A new beta is available here with the fix 😉 (log in to get access):
https://www.astropixelprocessor.com/community/appreleases/downloads/
Let me know if all is good now 😉
Mabula
A question to create Masterflat in the beta.
When I calibrate Masterflats, if I leave the integration on Automatic, is the Blur method used, or is it only available in manual mode?
Hi @minusman,
In the automatic mode, blurring is not applied. If you want to use it, I suggest you use the non-automatic mode.
I recommend to always use median integration for flats, no matter the amount of frames and apply slight outlier rejection -> winsor/adaptive with kappa low 6 and kappa high 3.
Blurring is a bit dangerous, on data with very strong vignetting, it will actually give worse results in terms of flat-field calibration, so for an automatic mode, we really need to disable this.
Mabula
Hello, Mabula, so it's on now. And APP is now very fast. I have re-processed the IC 342 images on my Ubuntu laptop with classic HDD hard disk and it is a clear performance boost. From calibration to integration everything runs through, without any problems. 🤩 🤩
When stretching the integration image, the preview hangs when you move the stretch slider and/or the contrast slider and jump from integration to rejection map. APP must then be restarted.
