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 also done the integration without the bpm and used darks instead but the column remains.
Originally I did my stacking elsewhere, ie my ic1396 4 pane mosaic, and just done the stitching in app and processed in photoshop, but now would like to do everything with app because buying for just stitching mosaics makes no sense. Hopefully there is a simple solution like something I have done wrong but I have followed the tutorials available but still with the same end result, so for now I will have to rely on stacking in my other program.
but another column has appeared this time under the flame nebula and out to the right hand side, this one on the right I think possibly satellite trail?
but another column has appeared this time under the flame nebula and out to the right hand side, this one on the right I think possibly satellite trail?
bpm details
Looks excellent to me Tony, the line that is visible is a satellite trail indeed. Normally, that can simply be removed with an outlier rejection filter like sigma clip or winsor sigma clip.
I have tried several settings but this line remains, its not a bad column it just appeared.
Hi Tony, this line doesn't show in the other integrations? Only in this one?
Mabula
yes, its not on the bpm or anything else, I have gone back over everything in case theres something I have done or forgotten but it ends up the same result.
Odd one this, never noticed before but it is visable in another process I did in another stacking program. I am going to process something completely different and see if its still there, but at least I have sorted the bad column.
There must be some explanation relating to the data itself, such a column shouldn't appear from nowhere.
Did you create the BPM using flats as well? Maybe this is a cold column that isn't corrected by the BPM and after dark subtration, it becomes a brigh column in the calibrated files?
Can you find this column in the calibrated lights before and after calibration? You can check by loading the frames with the calibration masters and then loading an image into the image viewer with the linear and l-calibrated image viewer modes.
