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,
its me, again :P.
I have a little Problem. I book a few Sessions with the Chilescope. Hell, that are damn good Pictures, but the Sensor itself and the Calibration is very hard to get. There are many Stripes and Columns, Bad Pixel etc.
So i give the Calibration a try - more then once. But i have a Problem with these Stripes - see the Picture.
On the left Side is the uncalibrated Lightframe, on the right side the calibrated one. Im using Cold Column 9 and Hot Column 9. The Black Line is gone, the white Line is still there, but on the right side from the white line, is a blurry line. But on the Lightframe, there is no line to remove.
Thats on OIII and HA. I dont manage to remove this Line without blurry the other Area.
Please Help 🙁
Greetings, Markus
Dear Markus @detoxx,
Before performing cosmetic correction, it's preferred and much better to make sure that the data is calibrated with a matching masterdark, a Masterflat and a Bad Pixel Map. Have you done this?
If you apply a Bad Pixel Map, it will always be better than a cosmetic hot pixel correction.
A matching MasterDark should really help with correcting bad columns, any remaining visible bad columns then can be corrected cosmetically.
Do you have calibration data, like masters for your raw frames?
kappa 9 for the columns is very low... that will usually not correct everything, best to use a value between 5-8. The lower the kappa, the more will be corrected, so be carefull, if you set it too low, too much will be corrected.
Cheers,
Mabula
Hi Mabula. Yeah i know, i always use a BadPixelMap for all Sensors. But on Chilescope, the Sensor have huge Problems with these Lines. And these Lines are not Corrected with the Darks or Bias. I do this several Times.
I remove the Lines manually in Photoshop, not a big deal, but it takes Time.
Thanks for your reply!
If they are not corrected at all with the darks, it might be that the calibration data is not right somehow. I would also ask the manager of the telescope in that regard.
