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Old 27-11-2023, 01:40 PM
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alpal
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Quote:
Originally Posted by strongmanmike View Post
I see you used the dual band filter, I'm not sure how this affects colour balance, as it is letting in both the Ha and OIII bands together and nothing else..? How do you separate the two channels, in terms of processing to get a colour image? Dust is not revealed when using NB filters, only emission gets through, although some dust does have a tiny bit of Ha in it so does emit some light but I wouldn't think it would contribute much if anything to the colour palette..?

Mike

Hi Mike,
I hadn't realised that Nik had been using the Optolong L-Ultimate 2" filter.
Of course the colors will be different to an LRGB picture.
It's only passing 2 narrow bands:
https://cdn.shopify.com/s/files/1/00...ission_800.png

There are some hints on how to process the picture here:
https://www.youtube.com/watch?v=740ZLTe95eg

cheers
Allan
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