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 there,
I have asked this question before but without a response. Maybe I had too many question packed in at once.
What does LPS in the channel selection stand for and how is it to be used?
If I would have to guess, maybe it means Light Pollution Suppression?Â
For subs taken with Astronomik CLS filter, would I select LPS (it it stands for light pollution suppression) or does it not matter, if I have only subs with same filter?Â
However, if I would load subs taken half without a filter and the other half with CLS, would it then matter?
In one of the very helpful videos I saw mentioned, APP recognizes automatically the different filters (LRGB) when loading all subs at once.Â
Thank you for your help.
Georg
Yes, you're correct, the LPS stands for Light Pollution Supression filter. Whatever you choose there doesn't really matter, it's a way to tag the data properly for a better organization, so if you don't have a specific narrowband filter used or mono data, you can pick RGB, UHC or LPS. APP does recognize it, but that'll depend on if the filter tag is included in the fits headers of the file.
Thank you Vincent,
In this case I will set up manual filter wheel in NINA and determine to use CSL or no filter and update the file name to include filter type.
However, as I am imaging with a DSLR with CR2 format file output, would that information even be saved?
Probably not indeed, then you can set it yourself.
