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 guy's,
I've just discovered a new issue regarding my extracted Oll image using a OSC camera and a Ha/Olli dual narrow band filter.
This is the first time I've encountered such problem whilst using the same set up for the past 12 months.
My HA image looks great following subtraction, however the Oll image contains a mixture of single, double and quadruple black pixels. I've compared against all master calibration frames (pixel location doesn't match), it's clear to see something is going on during Olll extraction.
I dither by 15 pixels using SGPRO with no walking noise problems. What I find odd is that my previous image shot the night before doesn't contain such pixels whilst using the exact same setup and software/processing settings.
I'm no expert by all means, the only possible discrepancy I see is in the master dark data, sigma G2 is one digit less than the others.Â
I'm wondering if it's worth adjusting my hot pixel/cold pixel settings and maybes making a new set of dark frames. I use x 50 darks taken 12 month's ago with no issues up until now.
I've attaches an image of the master dark fits header.
Many Thanks
Ryan
