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 hope someone can help with my problem.
I have a data set which, after loading lights, darks, bias and flats, runs the calibration tab and I can look at the maste results on screen and all look fine.
I press callibrate stars and get a screen pop up and that is as far as it will go.
Is this a data set problem or the programme ?
Regards
Steve
Might be an issue in the calibration data, what happens when you integrate without any calibration frames?
I am just trying the same data on another computer.
When thats done I will try without calibration frames.
S
OK so it turns out the bias files are the problem. Leave them out and all goes to plan.
The only difference I can see is the colour space. lights are 16b RGB and NO in CFA column
Bias frames are 16b Grey and RGGB in the CFA column.
I think I read something about APT doing its Bias frames in grey because thats what it does for CCD mono. I think I will have to find out how to do colour bias frames as that seems to be the problem.
Regards
S
That might be of influence (not 100% sure), at least we narrowed it down now. 🙂
So, as far as I can tell ticking the force CFA in the 0 tab has cured the problem. All files went through the complete process with no issues.
Found this by reading similar problem by another member and just trying it out. The file set was created in APT if that makes any difference.
S
Ah, yes that could be the issue. Some capture software don’t add proper FITS keywords in the resulting subs and APP then can’t know what the type of data is.
