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 Mabula,
Apologies for coming back with another issue quite so soon but I am seeing some odd results when I view 3 of the 19 iTelescope M1 RAW subs that I uploaded to you server just recently!Â
As you can see from the below screen shots of 2 x OIII and 2 x Ha frames, all the images look very similar when viewed in Linear mode but of the total set of 19, 3 look radically different in l-Calibrated mode. I thought at first that this might somehow be related to the 'flip' state setting you mentioned in my previous posting but this does not seem to be the case.
Is this just a glitch with the viewer or will miscalibration feed through into the integrated stacks?
Four l-calibrated screenshots - two good, two suspect
Four linear image screenshots - all look quite similar
Regards
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Mike
That is very odd, almost like someone put the lights on or something. I've seen that happen at iTelescope in Spain once. 🙂 Anyway, in this case it's the calibration it seems but is very likely due to the data itself. Somehow these frames are different, it would be great if you could upload them to our server. Login/password: appuser and create a folder with your name+"iTelescopeCalIssue".
Thanks in advance!
Hi Vincent,
Files uploaded as requested:
- 19 Lights
- Master Bias, Master Dark and 2 x MasterFlats
- BPM and 2 x MFs created by APP
Regards
Mike
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Thanks Mike! Either me or Mabula will check it out soon.
Hi Mabula,
I've just downloaded v1.078 to see if this problem I reported recently while experimenting in 1.077 with some iTelescope RAW image files of Crab nebula had been resolved.   I guess the earlier report has been overlooked or regarded as a low priority, which I hasten to say is not an issue for me.
You will probably also recall this target from dealing with this earlier problem which occurred while processing the corresponding iTelescope Calibrated files:
Anyway, I observe that 3 of the 19 RAW image files show this issue all show FLIPSTAT= 'Flip ' in the FITS header whereas the remainder all show FLIPSTAT= '   ' .  This seems a likely pointer to the trigger for the problem!
I believe I already loaded the file set for this issue to your server but can reload if needed.
Regards
Mike
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Dear Mike @mestutters,
Your problem is a MaximDL problem really. You will need to report this data problem to iTelescope.net I think. Something was not done correctly due to that FLIPSTAT header tag of MaximDL.
APP can handle the flipstat tag of MaximDL, but in this case something odd happened at iTelescope I think.
You could apply the flip yourself with the Batch Rotate tool on the problematic frames I think though...
Mabula
