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.
Hi,
i´ll have a nice data set of a TwoPanel Mosaic with a 510mm Refractor. It´s LRGB Data with one and the same CCD Camera/Flats/Darks/Bias etc.
Can i do the processing in one go? Saw Mabulas Tutorial, but as this data Sets are so differently, he might be first calibrate all on its own. If,like in my case, the Data Set is consistent, would it a be possible to calibrate and stack it in one go in Mosaic Mode?
CS Frank
Yes it is possible to do that. However, star analysis and registration may take a long time depending on the number of lights. In my experience, stacking the subs separately and then creating the mosaic is much faster but it requires more manual intervention.
Wouter
Thank you Wouter,
yes, its working now and it seems to take a lot of time and processing power. In between i got a black screen, i think the Laptop overheated a bit.
I was confused because i thought it might be clever to reduce the data in a Multisession Set. So Two Sets of Lights, one Set of Calibration Frames. But after Star Analysis, APP choosed just one Frame as Reeference. This made me a bit unsecure.
So if i do it seperately, i should do that as well in Single Mode for each Data Set?
Cs Frank
Hello Astrophotocologne, with a two-panel mosaic you can calibrate everything at once and then stacken.
The registration should be done in normal mode.
For star analysis, set the value to 2000-2500, depending on the overlap of the panels.
Alternatively, calibrate and stack each panel to a session. Then process the stacked panels in mosaic mode.
Best regards Henry
Hell Henry,
thank you,well that Link says it all. I thought i´m treating my data very well if i fully run the whole show in mosaic mode, but this is not the case i see now 🙂
Thank you!
CS Frank
So if i do it seperately, i should do that as well in Single Mode for each Data Set?
That depends on your data but from what you described before I think yes.
Wouter
Yes, integrating the panels of the mosaic first and then creating the mosaic is better. This is because when using only all subs, the statistics behind this algorithm will go through the roof making it very complex and taking a long time.
Thanks for all the answers,
now i´ve did a run through as you recommended and it worked perfectly fine and pretty fast. Its just a TwoPanelMosaic, so the next Goal ist to create larger Mosaics. With Two Panels it might be even work if i don´t use the Mosaic Mode? I think Mabula mentioned this in one of his Videos!?
CS Frank
It probably will yes, if the overlap is ok. Never really used it in that way though myself, clearly separated panels I already call a mosaic. I'm not sure, but using the mosaic settings may give you beter registration precision. You can check if this is the case by comparing the RMS values in the table.
