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.
No easy way to ask this so I'll just tell how I gathered my image data....
I did 2 hours worth of Dual band HA/OII with an Optolong L-eXtreme Filter. Then 1 hour 'each'
using my single band OIII filter and my SII filter...Three different filters.
Now, when I processed it in APP, I selected the Split Channels method. Trying to segregate each color. then after running thru the HA, OIII and SII. I selected the Combine RGB tab. After running it all thru, then selecting the color sliders like I normally do, I ended up with a reddish image, no colors.Â
Does APP distinguish the OIII and SII from my light frames and pull this out? When I loaded up all the frames, calibration frames, etc, I did it all together at the same time...
Was this correct, or am I doing this wrong? I've never tried to process an image before using three different filters. See Screen shot of image.
Thanks,
Rod
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What algorithm did you choose in CombineRGB? I also wonder if this object has a lot of OIII/SII data..
@vincent-modÂ
I used the HSO-1 Method, selected Add at the top next to where it says Normalize, just below the Add Channel Tab...It's getting better...This is the SHO Hubble-2, still needs post processing
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Maybe I should use the SHO Hubble 1 or 2...
Ah there it is. 🙂 Yes, so the different presets will show you what channel data is being combined and how in the sliders below. You can always make your own mix, the ones you choose are just presets.
This one was strange in that it did not like the Luminance. I had all three channels down near '0' before the colors showed. It was looking like a bright ball of light before. I'll just keep tinkering with it. Thanks
R
