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 everyone
I recently bought a asi 294 mc pro for my Ts Apo 100q/580 refractor. Great Camera...but i experience an artifact which seems to be 'common' for this type of camera. (Sony, smos?) Rare diffraction anomaly with bright stars, but not all. cfr picture. Integration Iris Nebula of about 6h. But you see it clearly in every light. Googling shows me not a lot of solutions.
Anyone experienced the same. And is there a way within Astro Pixel Processor to get around it?
Thanks Clear skies
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Guido
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I have the same camera and have never seen that effect ever it actually isn't common I don't know where you got that from.
Were you using a filter or any other thing like an oag? that looks like some sort of weird obstruction in the image train that has caused that effect.
Thanks for answering Nick
If you Google the terms you will see it is not so rare.
https://www.cloudynights.com/topic/728522-asi294mc-pro-sensor-issue-any-ideas/
See the link above. Same star ...same camera.
Strange anomaky
Clear skies
Guido
it is an issue with the 1600 series of cameras not the 294 which is what has also been said on those forums I asked about your image train
Seems not only an issue with the 1600 series...several users of 294 mc pro had the same problems i read yesterday on a Fb group for zwo cameras. UV IR cut filter should be the solution.
You still havent mentioned your image train, this is important.
Zwo Asi 294 mc pro + focal adapter (no reducer and no flattener) +Ts apo 100q/580 refractor. No filters used. I hope this is what you mean with image train?
No filters means you will get some bad blooming which could give that effect, you need at the very least uv/ircut or a decent light pollution filter like the Optolong L-Pro. you mention a focal adapter, isnt that like a flattener?
The focal adapter could be the cause of that artefact. I hVave never seen it on the 294 and I've been a member of the asicameras facebook group for many years.
I used to have a 294MC Pro and had exactly that issue with a number of different optical trains, an SCT both with and without focal reducer and two different refractors (One cheap and one not) I would not say it is uncommon, but if you already had suitable filters you would just never see it.
A UV-IR cut filter resolved it in all instances. The ZWO one for the image trains that filter suited, and an Astronomik L2 filter for the SCT. If ZWO made a UV-IR cut window for the 294MC Pro it would be the neatest fix, but they have never made one in that diameter unless one of the newer cameras has the same window size and they make a UV-IR cut one now.
