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.
Hello
I spent hours to understand why it was impossible to do anymore mosaic with 1.082 version (Mac OS X)
I want to assemble Ha OIII SII R G B mosaic (4x4)
Like usual, I put all my files in APP, set all mosaic parameters and I get intensity level issues on ALL filter mosaics
Here, Ha + O3, APP has set a Ha reference image. All result Ha, O3 mosaic has intensity level issue
Now, If I do exactly the same (no parameter change) with only 1 filter mosaic, result is nice (here, O3 only)
So I need to align each filter serie alone, then realign each mosaic to obtain a final mosaic I can process
I already assembled several mosaic like this, without any issue in the past with previous versions
Please advise
PS: don't tell me your data needs to be 16 or 32 bits, preprocessed or not. I tried all ! Always same result.
I always process linear 32 bits images. No want to do 16 bits stretched because lost of star colors (saturated)
Cheers
Philippe
So doing a mosaic of narrowband images likely doesn't work like this I think (yet and I didn't try it myself like you're doing so not 100% sure). You should make the panels first of each filter, then making a mosaic of that filter. Do that for every filter and then load those in and save the normalized frames once normalizing is done. Then you can combine them in the RGB Combine tool. Other way is to do this per panel and then loading those in as RGB results and making the mosaic that way.
edit: You mention you did it exactly like this before, so also using narrowband filters etc?
Thanks
I think you didn't understand me
1) Each panel of this 2x2 mosaic is the integrated sum of 100 images or so. Aligned each other, filter by filter. Here, this is 800 images already preprocessed (APP or another software) to get each integrated result plane by plane, filter by filter
2) I put each integrated file (after setting some level difference) in APP, So, here, 8 images (4 Ha + 4 O3)
3) APP select each plane and sort on filter
4) APP analyze all star of all panel and choose a reference (I can modify if not ok)
5) APP align and assemble the full mosaic per filter (here, 1 mosaic of Ha, 1 of O3)
This way got a bug !!! since 1.082 ( I did that before, several time, no real issue)
So I tried to use only 1 filter set and the result is like it should (but in this case, after you assemble the 2 mosaics (Ha, OIII, separately) you need to align again because reference and/or distortion are not the same
In the past, all was working !
Anyway, I don't understand why the O3 mosaic will get another level if processed among the Ha or alone. APP keeps them independent. Only Ha is used for alignment. No level.
I don't want to assemble RGB or SHO automatically. I want each mosaic monochrome
Cheers
Philippe
Ah got it, so loading all in in the end and then getting 2x mosaic results per filter. Ok, do you want to send the panels to me? I can verify that then here and report it to Mabula;
Go to https://upload.astropixelprocessor.com and use upload2 as username and upload2 as password.
Create a directory named “ccd2048-mosaicfailure” and upload in there. Thank you!
ps. regarding the different levels, I think if you're normalizing against both at the same time, it'll change the background level to match each other. So doing it separately would still be better in that regard.
thank you very much !
Done !!!
Thanks! Apologies for the delay, life got in the way again. Will download shortly.
Ok, so I looked at it step by step. It worked, but what I did do is to load the Ha frames to session 1 and OIII to session 2. Then at the integrate step I choose to "integrate per session".
hi !
Great.
Yes, I think the newest parameter (comparing to the past) is "session" (this is what I forgot)
Many thanks !!!
cheers
philippe
Woot! Awesome, glad to help. 🙂
