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,
I'm just trying and learnig making photos and working with APP- Today I worked with my last photos, put them into APP, started the process like I always did, but the photo after the complete process is red. Red stars in the whole picture.
any ideas what went wrong?
Pic is just a quick jpg to clarify what I mean
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@zavijah Hi! What calibration frames do you use? Do you get the same result if you integrate the lights without any calibration frames at all? What version of APP do you use?
@wvreeven Hi and many thanks for your answer. I'm using APP with the standard configuration. Never changed anything, so also in the step 2 "calibration". I can't try again with skipping the step calibration, cause I've deleted all the pictures and have to take new pics. It depends on the weather when I will be able to shoot any new pics...
So youre suggestion is to skip calibration?
I'm using Version 1.082, but tried the 1.083beta yesterday with the same result.
Like Wouter mentioned, are you using any calibration data?
@vincent-mod sorry, but what do you mean? I load the lights, sometimes I have darks and the I go step by step through APP. 1-2-3 and so on and I have had never such a result
I mean, normally you'd have a selection of bias or darkflats, flats, darks to calibrate the data. It could be that calibration data is causing an issue or a wrong settings somewhere. Just to get an idea what you used here.
@vincent-mod I'm mostly (99%) using only the lights as in this actual case.
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Ok, so then the question will be, does it look normal when you load just a single light in the preview? And are the gain and offset set properly (you can see this in the FITS header)? Is the mosaic pattern correct in tab 0?
@vincent-mod
Yes a single light looked normal as it should be. Every single light looked absolutely normal.
I can't check the fits header cause I deleted all lights 🙄
Oh that's a pitty. Next time you can upload your lights to our server, if the check on the headers doesn't reveal anything weird. We will then investigate what might be the issue.
@vincent-mod yes, it was a mistake to delete all the pictures at this early stage of investigation.
I will give it a try as soon as possible, depends on the weather, and will come back to you again with the results
