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, what would be the best way to combine several hours of data taken with a OSC camera (RASA 8, ASI071MC Pro) using a Celestron LP filter with a few hours of the same subject taken with a Radian Triad Ultra Quadband filter (Ha, Hb, OIII, SII)?. I use the AAD algorithm for the LP filter, and the preferred Ha-OIII color algorithm when using the quad filter. (I have also used the Extract Ha, Extract OIII and Ha-OIII mono and the Hubble RGB combine)
I have tried a few approaches but am curious as to your recommendation to better take advantage of the APP capabilities.
Thanks!
John
Well, doing the extract Ha, extract OIII etc. gives the possibility to work on those signals separately and making them nice. Using the Ha-OIII color won't give that much of control over the separate signals, which can be fine as well, depending on the data. So that are already possibilities to make it nicer. Improving results is usually a thing of more data and dark skies or narrowband. The better the data itself, the easier it is to get a better result.
