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.
I am having problems in 2.0 39 beta with the alignment of stars within my triple imaging rig, it seems like the individual channels (one shot by each scope) are not correctly aligned once registered and stacked. I can literally make it better by tweaking alignment in PS between the channels and that just never happened in 1.083.4. Its like something is going wrong with the sub pixel alignment between each of the three filters. Giving me rainbow stars. Its not lateral chromatic aberration either as its like they are out left to right across the entire image.Â
Anyone know anything about this?
Could you indicate what settings you used? A good idea in some cases is to do a reset of the settings first as they are being saved after closing APP.
@supernov I have changed no settings from the original ones. There used to be all sorts that you could tick, tune dynamic distortion correction etc.Â
Could you try it with disabling the dynamic distortion correction?
@supernov possibly but as of right now i know 1.083.4 worked for me and so i am trying to work out how to grab a copy and try that with this data. The problem is that you get small variations between the optics (and even small difference in focal length) on each scope so you so need to do some field correction to get it all to match up with each other, not sure how turning dynamic distortion correction off would help with that, in the past its been better to have it on under 1.083.4.
Ah yes, sorry I glossed over the multiple telescopes part. I think Mabula may ask for some data to check, I do know there have been improvements in the registration engine between 1.083 and now, but if there's a situation where something doesn't work properly he'd love some data. Pinging Mabula @mabula-admin It may still be interesting to know the RMS values of registration without the correction, just to see if that is indeed definitely needed.
Hi Adam @adamj,
Thank you very much for sharing your issue. The new registration engine of 2.0.0-beta39 is by far superior to 1.083.4, so if bet39 is not working, something weird is going on and I need to see it.
What do you mean by a triple imaging rig? Simply shooting R,G,B ? If so, are you registering all filters at the same time? If not, try that.
Please upload your data here so I can investigate myself:
https://upload.astropixelprocessor.com/
username: uploadData
password: uploadTestData
please make a folder with your name and issue like : Adam-RainbowStars
and upload your data there and let me know once done, thanks !
Mabula
