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
Here is my first astropixelprocessor stacked and combined image. Thanks to all the information available on this forum that made this image possible
It was a tricky image to process mainly due to me checking image rotation on my Atik 460ex on some sessions to match the last subs but then forgetting to uncheck it leaving me with the challenge of matching rotated calibration frames with the correct subs!
thanks for looking
Bryan
That is a stunning image! Can you tell us more about the telescope and camera used and what subs you took exactly?
Wouter
Very nice! You shouldn't have to worry about rotation I think, APP will register them properly.
That is a stunning image! Can you tell us more about the telescope and camera used and what subs you took exactly?
Wouter
Thanks Wouter for your kind words
The camera is an Atik 460ex cooled to around -11c
The telescope is a Revelation Astro ED100 fl 600mm f6 doublet
the filters are 1.25mm astrodon 5nm
the mount is a skywatcher azeq6 on a self built pier
The subs are all 20min long and there is 31 Ha and 25 Oiii I used 50 flats, 40 darks and 100 bias
Cheers
Bryan
Very nice! You shouldn't have to worry about rotation I think, APP will register them properly.
Hi Vincent
Thanks for the comment
I was worried as I had taken Images before and after a meridian flip, but after a flip the flip I ticked a box to rotate the camera 180° to help me align the previous frame, sometimes I forgot to uncheck the box which meant the hot pixels and a column defect the camera has where now flipped even though the actual nebula was rotated the same way as the subs before the meridian flip.
therefore I needed to take calibration subs in the flipped orientation too and apply them only to the relevant subs!
I hope this makes sense
Cheers
Bryan
That also shouldn't be a problem. 🙂 APP will register all just fine and if not, you can check a box to indicate some subs may be upside down.
That also shouldn't be a problem. 🙂 APP will register all just fine and if not, you can check a box to indicate some subs may be upside down.
Hi Vincent, thanks for your reply.
I am keen to know where this box is? To be honest, I haven't looked to find it yet and it's probably obvious, but if you could point me in the right direction that would be great!
Many thanks
Bryan
Here you go, but try it first without and just load all in, I think that should work fine;
