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 have a 2-panel LRGB mosaic that is registering fine but one panel looks quite washed out compared with the other.
Set up each session as a different panel and I set up 1st degree and 4th degree LNC hoping that would even things out.
My normalization is set to Advanced/multiply-scale/BMMV with neutralize background off.
Anything else I should try to get the panels of the two images to better match up?
Thanks!
Mathew
So how does that panel look like when you integrate it first (before making the mosaic)? Is it quite different in quality somehow? What I usually do is to correct light pollution etc. per panel first and then I make the mosaic. Seems to work quite nicely, LNC then takes care of the rest.
here you can see the mosaic and then the session 1 and 2 individually, just with an stf in pixinsight
Oh that looks very strange. Can you give some details on how you made the mosaic and what the input data exactly is? Is it raw files or did you already process them somehow?
Would be nice to have the 2 panels as well, I can have a quick look then as to what might be up.
Sure thing - should I share with your fb acct or is there a way to DM links to the raw file?
You can upload it to our server, or.. since it's 2 panels; maybe share a wetransfer and e-mail it to vincent@astropixelprocessor.com. Whatever works best for you, if you want to upload to our server;
Go to https://upload.astropixelprocessor.com and use upload2 as username and upload2 as password.
Create a directory named “mr1337-mosaic” and upload in there. Thank you!
Sent along some files for reference. and here are the rest of my settings. Let me know if you need any more detail:
Register
Pattern Recognition Descriptors: Quadrilaterals
Scale Start: 5
Scale Stop: 10
[checked] Use dynamic distortion correction
[checked] Same camera and optics
Registration Mode: mosaic
Projection Model: projective
Normalize
Mode: advanced
method: multiply-scale
scale: BWMV
Integrate
integrate: automatic
LNC degree: 1st (also tried 4th) degree LNC
LNC iterations: 1 (also tried 3)
[checked] enable MBB
10%
Ok, thanks for the data, working on it now. Looking at the mosaic, it seems like you didn't use outlier rejection for the panels, is that correct? Or at least I'm still seeing satellite trails. What calibration data do you use? Did you use LNC also for creating the panels? If not, that may already improve things.
Furthermore, I didn't get the washed out effect, but the only difference is that I turned off "same camera/optics" and switched off dynamic correction (didn't work switched on in this case, which can happen if the data doesn't need too much correction). The registration RMS wasn't great though, so I'm wondering also how you made the mosaic, what kind of overlap etc?
Overlap is around 10%
Tried manually using the outlier rejection and that helped balance the frames out a great deal. I saw registration issues after doing that, specifically on the right side. After reintegrating with dynamic correction off I still saw some issues and went in and removed a few jumpy frames from the lights. After doing that and going back and turning on dynamic correction again I got a really nice mosaic. I think the only difference now is a few frames that had moved a bit and not using the automatic integration option. I guess that will be my go-to now is just to make sure I don't use that automatic feature for mosaics since that is pretty much the only change I ended up making in the end.
Ok, interesting still as normally that would work pretty much automatically. But, good to see you got it working nicely!
