Combining Channels
 
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June 24 2026 APP 2.0.0-beta46 has been released !

Improved internal memory configuration (lower ! memory usage), fixed beta45 startup issue, fixed Set Save Directory & 2-panel mosaics.

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.

 

Combining Channels

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(@richardhurst)
Main Sequence Star
Joined: 6 years ago
Posts: 21
Topic starter  

Good morning. Can someone advise me on how I do the following process please.

I’m using a DSLR and have taken my lights, darks, flats and bias frames of the American Nebula and have them on my desktop. If I run APP I get a great image of the American Nebula showing it in the H-Alpha red colour. Whilst that looks great I’ve seen the same composition which was processed combining just the RGB & HOO channels and would love to know how I do this in APP?? Currently using the L-Enhance filter but have a Quadband on its way. If you can point me to any videos or give me a idiots guide that would be great. 



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

You can have a look at this workflow: https://www.astropixelprocessor.com/community/tutorials-workflows/combining-r-g-b-with-ha-oiii-data-using-an-optolong-l-enhance-filter/

This is for such a filter, or at least you can adapt the workflow to work for such a filter as well. Be aware that color calibration with RGB and narrowband data is quite tricky. For the best workflow you can look at this workflow: https://www.astropixelprocessor.com/community/tutorials-workflows/hargb-and-lhargb-workflow-and-star-color-calibration/#post-10863



   
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