red block of pixels
 
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MAY 4 2026: APP 2.0.0-beta44 has been released !

New improved internal memory controls should now work on all computers

May 1 2026: APP 2.0.0-beta43 has been released !

Improved internal memory controls (much more stable and faster on big datasets), fixed CPU image viewer, fixed Narrowband extraction demosaic algortihms.

Apr 29 2026 APP 2.0.0-beta42 has been released !

New improved Normalization engine, Fixed random crashes in integration, fixed RGB Combine & Calibrate Star Colors, fixed Narrowband extraction algorithms, new development platform with performance gains, bug fixes in the tools, etc...

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.

 

red block of pixels

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(@autonm)
White Dwarf
Joined: 6 years ago
Posts: 10
Topic starter  

I seem to have a red block on some light frames and when stacked - creates a red wiggle / line. 

I'm not guiding so I am expecting some shift between frames, however the red block is not picked up by the 'bad pixel map'.

 

Any suggestions on how to remove this red block during APP / stacking? as it really is making the images unusable.

(attached - light / bad pixel map / integrated image)

Screenshot 2020 11 04 at 16.37.11
Screenshot 2020 11 04 at 16.37.02
Screenshot 2020 11 04 at 16.37.30

 

 

See attached files. 



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Woops missed your post, sorry.

So are you using darks as well? This seems a hot pixel, did you leave integration in automatic setting?



   
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(@autonm)
White Dwarf
Joined: 6 years ago
Posts: 10
Topic starter  

Yes - full set, darks / bias / flats / dark flats ... I asked in another thread and I think you said that if I did use a full set - then APP would apply the right combinations etc. 

 

Integration - I chose the option for > 20 frames ... as I had 80+ lights.

Thanks

 

 



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Interesting, maybe in this case you then would need cosmetic correction as well. This can be found in tab 2, calibration a way down. You switch on the hot pixel kappa checkmark. You then load 1 sub (and your BPM and MD) with that red pixel, zoom in on it and select "l-calibrated" from the dropdown menu on top of the APP window. Do you see it go away? If not you can reduce that kappa to 2.5 and check again (select l-calibrated again). This is a fast way to see if you can resolve issues like this before doing an entire integration.

If it correctly removes that pixel and the rest looks ok, you can try another integration.



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

ps. you mention not guiding, so you can't dither then either, that is where issues like this will also get solved (although I think walking noise looks different, maybe this is related?).



   
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