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 posted last night after a crash while running a two session, multi-channel integration.  I re-ran the integration tonight without the Bias frames on the basis that I think I read somewhere that Bias is included in Dark Flats and since I had DF's I didn't need Bias. Regardless of whether I got this right the integration completed - I had opted to "Integrate per Channel and All" for Mulit-Session and Mulit-Channels
 Details are :
- Session 1 is straight RGB - 1x1 @300sec.
- Session 2 is LRGB with LÂ 1x1 @900sec and RGB at 2x2 @300sec.
For calibration I have
- Flats and Dark Flats for each set of lights
- Darks for 1x1 and 2x2
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Most of the integrations look ok, although the Session 1 "All" has a meteor running though it which I guess probably needs rerunning with some tweaks.
The "Weirdness" is that the Green Session 2 Integration is completely black with odd borders. I viewed all of the loaded Lights individually and they looked fine, also checked the folders were correct and the metadata looks ok. Both Sessions integrate without problems when run as single sessions.
Some screen shots attached.
EDIT. I reran the process without multiband blending and it worked fine producing all expected integrations. I cant say for sure this was the issue but may help narrow it down. If I get time I will try and run it again with the multiband blending and see if it fails again.
Apologies, I posted this in the wrong section but don't seem to be able to move it.
Apologies, I posted this in the wrong section but don't seem to be able to move it.
Thank you for sharing this is issue. I have not seen this myself yet, but apparently this happens in in the multi-channel and session dual mode. I will perform testing to see if I can isolate this issue.
Mabula
Thanks Mabula Â
