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. I am completely new in APP. Already done some good picture with it.
I do a night session for Neowise comet, with 27 lights and 30 DOF (of each), with an partially defiltred DLSR. When i get the processed image, the head of Neowise is much more exposed (overexposed) and an artifact (like a grey zone) is present on both side of the head. (The lights doesn't present this artifact).
What is the problem ? Defiltred DLSR, too much lights (i try with different numbers of light, and that change the artifact). Is it possible to reduce the total exposure of the brightest area ?
Thanks for your help
The images : 1 light (i don't understand why it is green, because the raw file is red due to partially defiltred DLSR) and the second picture is the processed image in APP (with the artifact)
This could be because of a combination of overexposure and the way the dslr was modded. But I’m guessing a bit here. If you want you can upload the files to our server to be included for comet registration testing in APP as we want to support that in a later version, tricky data like this will help us get the best overall result for it. You can find more about the upload process in the forum message by Mabula. If you uploaded it, let me know and I can already have a quick look.
Hello Thanks for the answer. If you look the picture of one of de lights, i don't found it's overexposed (also not in the area where it is the artifact. Anyway, if i hear you, it's maybe not a dummies workflow !
Sur i can send you the data, but it's huge. Do you want also the DOF ? Light and DOF is 1.2 Go !
Let me know
Whoops, I totally missed your reply, very sorry about that. If you want you can upload the data to here;
Go to https://upload.astropixelprocessor.com and use upload1 (or upload2 till 5) as username and password will then be the same as the username.
Create a directory named “mcegli-cometoverexposed” and upload in there. Thank you!
And also test the new beta, it will now have comet stacking support.
Hiii
Some month (year later), i try again with the same lights, flats, etc but with the new 1.083 stable.
the problem from the artifact is gone. But hard job.... For the process (because it's not possible yet) for having the stars and the comet sharp (i try a lot of things in APP but i'm really new in APP so i don't found the solution(i also tray the method from Warwick Anderson https://www.astrobin.com/8pzs8i/ but without success)), so i do :
1 integration for the stars
2 integration for the comet with comet method
3 stack in Photoshop the two picture + some cosmetics
Like many, i wait for a complete sharp integration.
@mcegli Could you please attach a JPEG image? That way we don't have to download your TIFF file and open it in an external image viewer. Thanks!
