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 all, received my new 2600MM camera coupled with a redcat 71 and I'm having some issues with combining my RGB files in AstroPixelProcessor using flats that I've taken. As you can see the combined file looks a bit weird in my opinion and also it seems as if the flats are doing absolutely nothing to get rid of the dust Motes, vignetting and things like that. Looking for some advice as to what I might be doing wrong. I've been using AstroPixelProcessor for the last few years and I'm not a novice, but I'm just stumped here.
Hi,
I had something very similar with my ASI2600MM after switching from AsiAir Pro to N.I.N.A. I had always used flats + bias, but with the switch to N.I.N.A. I was getting something like you are getting all of a sudden.
Solution? Dark Flats. I aim for histogram peak around 33% rather than the recommended 50% and all is well. Why Dark Flats? I have no idea, really, but it solved my issue. 🙃 Also, I usually create all my master calibration frames before integration.
My understanding is that you can't use flats+bias with the sensor in the 2600 because the bias does not behave in a linear way. As Jurij suggested, you should use flats+darkflats with this sensor. It worked for me.
JC
