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.
Is there a way to stack Seestar subs? I just get star analysis failed
Hi @woldsweather,
Which APP version are you using? Please try the latest version 2.0.0-beta45 if you have not done so already.
If you load an image of your seestar into the image viewer, does it show properly?
How many stars can you count visually in the data?
Is the demosaic/debayer of the colors correct for your seestar data?
I tested recently 2000 seestar subs of another APP user, and the star analysis was no problem.
If you are using very short exposures, maybe in 3) analyse stars, you need to enable the noise reduction function.Did you try that?
Mabula
@mabula-admin Hi Mabula. Away on holiday so will look into this and update on my return. Thanks for your repl.
@mabula-admin I am using 2.0.0.0 beta 49. A single Seestar frame loads ol and I can see around 20 stars. I don't see any noise function in 3.
Hi Trevor @woldsweather,
Could that be 2.0.0-beta39? Please try 2.0.0-beta45, it has many improvements over beta39.
In 3) analyse stars, there is the function:Â cosmic ray / noise reducer, maybe you need to turn it on. Set the Lower-limit area size to at least 10 to start and let me know what happens.
If you load the images in the image viewer of APP:
Do the images look okay in terms of noise/color?
Is your Seestar firmware up-to-date?
Can you upload some of your Seestar frames here:
https://upload.astropixelprocessor.com/
username: uploadData
password: uploadTestData
Please make a folder with your name and issue like:Â Trevor-Seestar-Issues
And upload the data there and let me know once done, then I will have a look to see why it is not working.
Thanks, Mabula
Done now Mabula
The folder I am trying to stack has 1325 subs, have uploaded a few.
Hi Trevor, @woldsweather
Thank you very much for the upload, we have received it in good order and we will test the data and try to improve it. I have opened a separate issue on my list for seestar processing.
Mabula
