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.
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Topic starter
July 25, 2020 17:13
I'm a novice, and just purchased APP and first use was with some NEOWISE images that IMHO came out nicely but for the vignetting & LP correction.
There's a post on combining RGB with Ha & OIII data using an Optolong L-eNhance.
Questions?
- I'm using an ASI183MM Pro with RGB&L filters plus L-eNhance filter (filter set in slot 5). Â Using the same approach as described in the tutorial, should I be taking subs with the RGB&L (combining these) and then use the L-eNhance subs in lieu of the Ha & OIII data?
- Or, should I just use the L-eNhance as my luminance data, and collect/combine the RGB as described in the tutorial?
- I've also got a L-pro filter - would there be any advantage to use this as my luminance filter, and use the L-eNhance as my proxy for the Ha & OIII?
Sadly, my location is in a Bortle 5/6 (have a delightful sodium street light) that really compromises my imaging toward the SW. Â The L-eNhance has been a real blessing but can't fix everything.
Unrelated, but here's my novice attempt to capture NEOWISE, and processed with APP - no flats, darks, or bias. Â Next session will capture these to improve the integration but still working on how to do these with the HyperStar.
thanks, Jim
