May 27 2026 APP 2.0.0-beta45 has been released !
Fully Multi-Threaded LNC, many improvements for the registration engine, platform upgrade, and further tuning of internal memory consumption and memory release back to OS.
Apr 14 2026: Google Pay, Apple Pay & WeChat Pay added as payment options
Update on the 2.0.0 release & the full manual
We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.
Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.
Hi...
I experienced recently that some images shows a distinct blue tint after integration. All taken with ZWO ASI2600c, forced Bayer supported, flats, dark and bias. Example is the 2hrs 10 min integration of M33 taken yesterday where only light pollution has been corrected in APP and the image streched to non linear. The image was shot using a lumicon deep sky filter as well as the integrated UV-filter in the camera. The funny thing is that the blue tint only shows up in some images. In other images (like the attached integration of Rosette Nebula, Nikon 300mm f2.8 3hrs 40min) shows normal colours. Same filter, same camera, same seeing and same process. Any comments on how to avoid the blue tint would be appreciated....
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best
Alf J.
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@ajnilsen Does this only happen with the ASI2600MC camera? If yes please have a look at the white balance settings of the ZWO driver. The white balance for red is set to 0.52 and for blue to 0.95 (on a scale from 0 to 1)  by default and both should be set to 0.5 in order to get good colors. I don’t know why ZWO have decided to set the white balances like that but they did.Â
Hi...
Yes, only for the ASI2600c and not always. I'll check the white balance settings and reply. Thanks for the tip!
best
AJ
Hi again....
I checked the white balance settings for ASI2600 using ASICap and it was 50:50. However, when I downloaded the latested ASCOM driver version and installed it, the settings changed to 95:1 and had to be manually adjusted to 50:50. Anyway, the driver used when taking the attached photos was the one that showed up 50:50. Could it be that the settings change from session to session?? Funny that the tint only appears in some images...
best
Alf J.
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@ajnilsen The white balance is set by the driver so if it changes then it would be a question for the forum of the software that you use to take the pictures and not here, sorry.Â
