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.
Not seen this one on here so thought I'd ask. I understand extraction and stacking of Ha/Oiii data, and do it quite successfully. But I'm getting a dual NB Oiii/Sii filter soon, so I'm curious as to how that will work with an OSC?
Would it be correct in assuming that because the Sii is closest to the red channel, if imaging using that filter, one could just use the Ha/Oiii extraction algorithm for OSC then when combining the data using the Combine RGB tool in an SHO palette use it there as actual Sii?
I'm hoping that made sense
It is yes and you should be fine using the Ha/OIII combination. In combineRGB you can mix any data in the way you want, so if you specify the SII extraction is SII, it will be treated as such.
@vincent-mod that's fab stuff, thank you kindly 🙏
@digitaliz-se damn that's nice! Seriously looking forward to getting my hands on these filters 🤗
