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, I took more data on NA nebula. Oiii and sii.
I loaded all frames from Ha panel one into hydrogen alpha, and l frames from Ha panel 2 under custom and typed in hydrogen alpha-2, same with other 2 channels.
Loaded darks, flats and dark flats and hit normalize.Â
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Many frames didn't register... some were panel 1 and some panel 2, so not sure what went wrong....should I load all Ha into Ha even if they are 2 panels?
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I assumed I had to register all frames together...regardless of 2 panels.Â
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Please help!
Adam
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Hi Adam @singding,
No, you need to load all H-alpha frames of all panels as H-alpha. You shouldn't assign a different channel name for H-alpha of another panel. It's all H-alpha 😉
So you are trying to make a multi-channel mosaic right?
What settings did you use in 3) and 4) ? And how many stars were detected in your frames?
For a mosaic registration you need a bit different settings than the defaults, so let me know what settings you used and then I can give you some pointers.
Cheers,
Mabula
So it's a 2 channel "mosaic" or integration with 10% overlap. Ha oui, and sii.
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So I shouldn't make each channel and each panel a separate integration then and then integrate the panels after?
I tried the recommended settings, lowered kappa all the way, upped the start and stop?
I apologize I can't access the computer now, but I did try a few settings.
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When I did my hargb, I did each panel separate, then combined them after....
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Hope this helps for now. Basically registration failed for many frames that appeared ok..500 to 800 stars I think
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Adam
