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.
I've been using APP ver 1.082 for a while now and have never had a problem until now. The stars in my stacked image are coming out as red. I've taken the exact same lights and calibration files and stacked them in DSS and everything is fine, so it's not my data. Sample image attached. 75 subs using L-extreme, using the following:
Tab 0
Pattern: RGGB, Algo: HA-Oiii Color, Force Bayer
Tab 1: De-select multi-channel and multi session
Tab 2,4,5 : All Defaults (as far as I know)
Tab 6: LNC 1 iteration and MBB 5%
Mm, tricky to say. Could you upload some of the data to our server to check out?
Go to https://upload.astropixelprocessor.com and use upload1 as username and upload1 as password.
Create a directory named “bennettd-redstars” and upload in there. Thank you!
@vincent-mod So, I figured out that it's the Neutralize-BG option on the integrated image that gave me the out of whack image (all red and bloated red stars). As soon as I disable that in the right-hand panel my image is fine. I don't remember having that issue before, so I'll keep on eye on it when I run though some other data.
Ok, so there might be a little issue in the background data or something that causes that. But if it works fine for post, that's nice to have found out!
Have you tried the align channels option in tab 2 calibrate?
It works great for issues like this, but you need to saved the calibrated frames and then use those as light (without debayering this time and without adding again your calibration darks flats etc.)
I find it clears up duo or quad band type data in aad or ha-oIII color algorithms, removes excessive star color and the integration is balanced a little better.
This debayers your files so you have a new set of calibrated lights.
