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 đŸ™‚
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.
Hello.
I want to color the monochrome image of L, R, G, B with the Combine RGB tool.
Calibrated L, R, G, B files (at the end -CAL) are stored on the PC.
I am lost in the procedure to colorize using those.
I understand how to integrate only L. and understand that R, G, B also have the same procedure as L.
The procedure for integrating four files (L, R, G, B) is lost.
I'm sorry for the rudimentary question, but I could not find the answer in Forum's search.
When I registered four files from the Combine RGB Tool (Add Channel), position does not match.
@uboot7c You can load the L, R, G and B lights all together along with their calibration files. You need to make sure that all files belonging to the same filter end up in the same channel. Then you can process all lights and you will get four integrated images (one for L, R, G and B each) which you can load in Combine RGB.
Another option is to process them all separately as you have done. Then you can load the four integrated images again as lights (do not load any calibration files), go to tab 4 and click the Register button. Once done, save the registered images (again in tab 4) and then you can load those in Combine RGB.
@wvreeven  Hello Wouter,  You and I recently had an exchange on the ZWO forum regarding getting the Mosaic function working. Thanks to your help I was able to do that,  At your recommendation and after reading a number of other's I decided to buy the owners version of APP. I don't want to pester you, or others here on this forum, about how to do some of the basic functions, and understanding what all the various options do....... However unfortunately so far I have found the instructional videos somewhat lacking in details for a raw beginner like myself...... Is there any hard documentation that I can find anywhere, you know like APP for Dummies ( like myself ) that I could purchase that would help me get started here? Â
 Sorry Kunihiko Innui, not trying to hijack your thread. Al
Hello Wouter
"go to tab 4 and click the Register button"
This is what I wanted to know.
It was just a point I got lost.
Thank you for your good teaching.
This few days in Japan, it is sunny at night.
I hope your weather is good.
Thank you
Hello　Al Daddario
It is not hijack.Don't worry.
I started using the app recently, so I often get lost on the way.
I hope your weather is good.
Thank you
@tetonman50 Hi Al. There is no manual for APP yet, though it is in the planning. Until then you can use
https://digitalstars.wordpress.com/2020/09/19/an-astropixelprocessor-quick-start-guide/
Note that that guide isn't complete either and has not been written by any of us.
