"Critical Warning, ...
 
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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.

 

"Critical Warning, background neutralisation was tuned off ..."

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(@abmwinnoch)
Brown Dwarf
Joined: 4 years ago
Posts: 4
Topic starter  

Hi folks. What does this message that I keep getting mean? This is a dual narrowband image using an Optolong L-extreme. I've redone my flats and dark flats and I'm certain there is no light leakage. I haven't used any bias frames, and the gain, etc is the same as for my lights so I don't know what that's about. Which leaves underexposure.. well there's a decent image visible on the subs (see sub example attached)and it's not a dark subject (Horsehead nebula), so I'm at a bit of a loss as to what the issue is here and why it is critical🤔 Anyone, any ideas?

image
image

 



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

@abmwinnoch Alan, this has been explained by Mabula in this sticky post:

https://www.astropixelprocessor.com/community/main-forum/dark-frame-errors/

 



   
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(@abmwinnoch)
Brown Dwarf
Joined: 4 years ago
Posts: 4
Topic starter  

@wvreeven Ah sorry I should've checked that thanks. Just on my trial period so still finding my feet with the program. Certainly there's a lot of very helpful dialogue boxes throughout all the panels, which I appreciate.



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

@abmwinnoch No problem. If the explanation there doesn't answer your questions then please feel free to ask them here. 



   
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