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,Â
I'm having some problems in integrating the frames captured by my new QHY183C.
I've set the debayer pattern RGGB, that should be the right one for the camera, but the result is completely green while the single frames aren't. Are there any specific parameters I have to set in order to process the light frames properly ?
Could you try switching OpenGL off on top of the application? Just to see if it's gpu driver related.
If not, try without any calibration frames to check if there may be an issue in there.
I've tried both strategies but switching OpenGL has no effect.
Remove calibration provide a full white image.
I've set the pattern to RGGB (that should be the right one) and the algorithm to Adaptive Airy Disc, checking the box "force ...CFA".
Are there any other parameters I can try to play with?
Well that is odd, then I suspect a general data issue probably. Could you upload like 5-10 lights and your master calibration frames to our server? Top right of the forum are instructions on how to go there and please create a directory called "plicciar-colorIssue". Thanks!
Will do.
Thanks
Done,
I've uploaded the master dark, 5 lights and the result of the integration
Thank you for the support
Thanks, will have a look today (bit busy at the moment sorry)..
Very sorry, on it now!
So, loading in a light from your data, it immediately looked strange to me. APP is correctly applying the RGGB algorithm (no need to set it manually) and since there is more green in the data (R GG B) it looks a bit greenish. That will correct fine during processing.
However, the histogram and noise in the image look wrong;
As if you're clipping very much to the left of what the sensor can record. Looking at the metadata, I can see a gain of 1. That is very low, however could be because you need the highest dynamic range. The offset is set to 0 as well, this is not correct. Every sensor needs an offset and this is what is causing a further issue in your data when processing. Have a look at what gain setting and offset is considered good for your sensor and you'll improve your data immediately. 🙂
