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.
I use my Atik 428ex CCD camera for DSO images.
Can you stack and then process mono CCD images in APP?
I am particularly interested to know if I can stack-register-combine and process. Narrowband Ha and OIII channels to create a Bi-Colour image of NGC7635 the Bubble nebula. I don't have this data yet. But I hope to collect it in a weeks time.
Any helpful advice would be greatly appreciated.Â
Regards
Paul A Brierley
Observing Coordinator for Macclesfield Astronomical Society.
Yes, you can, no problem at all. I can get you through the workflow if you want after you took the data and proper calibration frames.
Thank you, Vincent,
I will have some narrowband data to play with after I have been away to a Star Party in darkest Norfolk.
I will be using my Atik 428ex with two NB filters. Baader Ha and OIII and want to create a Bicolor image of the following targets.
NGC7635-NGC7023-NGC281.
I hope I can do all the stacking-processing in APP. So a tutorial would be very useful.
You can and it should be quite straightforward, a tutorial is being worked on and the video tutorials (albeit old now) still give you the general idea for exactly what you want to do here.
Thank you VincentÂ
That's very kind of you. I appreciate that.Â
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