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.
I have just received my new ASI2600 MC Pro and am building a dark frame library.
When I apply a very strong stretch to a master dark in APP it shows a distinct colour gradient left to right. Is this normal or is it an indication of an issue with the sensor/camera/method of taking dark frames?I have never seen this before on any dark frames.
Attached JPG of a stretched masterdark 60s/G100/Offset50/-10C
I think that can be normal, maybe a very slight signal coming through from the sensor. Doesn't really appear to be light leakage, that would be stronger I think, but maybe a good idea to double-check it's indeed totally dark when taking the frames.
I'd just use it and test it on actual data to see if it works ok for your sensor.
I think that can be normal, maybe a very slight signal coming through from the sensor. Doesn't really appear to be light leakage, that would be stronger I think, but maybe a good idea to double-check it's indeed totally dark when taking the frames.
I'd just use it and test it on actual data to see if it works ok for your sensor.
Boy that was quick!!
I was very careful to ensure it was dark - night time, dark room, no lights anywhere, computer screens off etc so i'm fairly confident its not light leak.
I expect you are right and its not an issue. Ill see how it goes when I get some actual data to process - but since the camera was delivered this week that is likely to be some weeks away 🙄Â
We have an ASI2600MC as well and I just did an extreme stretch on the master dark that we produced a few months ago. It also shows a color gradient. However, our images seem to come out fine so I am not worried about it at all.
We have an ASI2600MC as well and I just did an extreme stretch on the master dark that we produced a few months ago. It also shows a color gradient. However, our images seem to come out fine so I am not worried about it at all.
Wouter
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Brilliant! Thanks for doing that Wouter, it puts my mind at rest while I wait for a clear sky.
