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 App forum members, have recently purchased the app and am working on the software. Now with e standard values I have done a test of Barnard 33, the horse head nebula. what strikes me is that strange artefacts occur in the stack. They are not in the separate subs. Somebody has an idea about this? Maybe settings are wrong? hope that you can provide me with clarity,greeting Ronn
Hello App forum members, have recently purchased the app and am working on the software. Now with e standard values I have done a test of Barnard 33, the horse head nebula. what strikes me is that strange artefacts occur in the stack. They are not in the separate subs. Somebody has an idea about this? Maybe settings are wrong? hope that you can provide me with clarity,greeting Ronn
Hi Stardust @ronn 😉
These are definitely hotpixels and they can easily be removed with a Bad Pixel Map. Have you created one in 2) Calibrate?
If so, try creating one with a slighly lower Hot pixels kappa value. By default the setting is 3, so lower it to 2.0-2.5 and check if the result is better.
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2 other methods for removing the bad pixels can be found in 6) integrate:
integrate with median if you have less than 20 frames
integrate with average if you have more than 20 frames, but enable a outlier rejection filter like sigma clip, this should take care of the hot pixels.
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Let me know if this helps or if you need more assistance.
Kind regards,
Mabula
This post was modified 8 years ago by Mabula-Admin
Thanks for going here! 🙂 Yes, these are hot pixels and they should be in the seperate subs as well. Maybe have a pixelpeep look at them at 100%. It looks like you dithered the data in 1 direction, if so, that's why you see them moving like this.
