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,
I'd like some advice, I'm new to APP and processing in general. I have a ZWO ASI533 MC Pro camera. My Raw/Fits tab is configured to RGGB/Adaptive Airy Disc and Force Bayer/X -Trans CFA. I'm using flats, darks and bias frames...but when stacked continually have a green haze on on edge of the fit file. I'm reasonably shielded from a streetlight...I don't think this is the issue. I've also tried processing without the Force Bayer/X option yielding the same results. Neutralize Background is also checked.
Any advice would be appreciated.
Jeff
@jhullin Hi Jeff,
You probably can leave the settings of tab 0 to their defaults. APP is very well capable of detecting the Bayer pattern itself.
Having said that, can you post an image showing the issue? Just convert the integration result to a JPEG file and post that here.
And some questions for you. What software do you use to shoot the lights and calibration files? What gain, offset, temperature and exposure time? Do you use a filter (like L-eXtreme) or is this "pure" RGB?
Thanks, Wouter
Hi Wouter...I'm using an ASI Air Pro to shoot the lights and calibration files. The lights are 3 minutes in duration at gain 100 and -10 degrees. They are pure RGB.Â
Thanks,
Jeff
@jhullin Thanks for the info and the image. Is this taken without any filter, in other words pure RGB? It could be light pollution or perhaps an issue with your calibration files. Do you see the green edge as well when you integrate the lights without any calibration files at all?
Hi Wouter,
Here is the stacked file...no calibration frames. This is straight RGB, I did not use a filter of any kind. This is much better...I shoot new flats for each session...bad bias or darks?Â
Thanks,
Jeff
@jhullin Well, what happens if you stack with the bias and darks and not the flats?
Hi,
I had some time to do more testing, it appears the issue was with the bias frames. I've created new ones and the issue seems to be resolved. Thanks for your help.
Jeff
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