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 recently bought Fujifilm x-t10 for astrophotography. Didn't have a good weather to test with stars, so I took 3x5minutes test dark frames. I was a bit afraid when I saw this result. Strange pattern overlaps with some autofocus point features (x-t10 has the same sensor and autofocus as x-t1). I wonder whether I could somehow fix it.
Thanks,
Piotr
One additional note, it does strongly react on temperature - I took another exposure in a fridge (about 5 degrees Celsius) and it is barely visible. The masterdark above was taken in about 23 degrees, but I suspect that sensor might had more than 30 degrees. Below is a single dark taken in a fridge.
That's very interesting, let me pass this on to Mabula.. I think a dark might fix this, not 100% sure though.
Ok, got word from Mabula. It's unfortunately not easy to solve, nor can it be solved at the moment with a dark. 🙁 Mabula does want to investigate if this could be addressed somehow, but that won't be something very soon.
Ok, I tried and dark can fix it in a huge degree but it would be much better to do not have it. It can wait however. Should I apply some dark frames for future investigation? It is connected with demosaic algorithm? Thanks.
Okay, I read this article https://petapixel.com/2017/02/23/fuji-cameras-produce-strange-purple-flaregrid-artifact/
correct me if I am wrong, but it seems that phase detection pixels are automatically multiplyed by 2 to compensate less light getting to them. In normal conditions it works well, but while taking dark frames they shouldn't do it like that, because they behave normally when there is't any light, but they values are still doubled, therefore I get such strange green grid in the phase detection pixels area.
Am I right? I do not want to correct it immadietally, I just want to understand how it works.
I have no experience myself with X-trans systems, but yes it would be nice if that could be switched off. Maybe something to ask the company as well? APP will try to correct these regions in the future, but it's not something we can support very soon.
