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Old 07-06-2007, 05:29 PM
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Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,065
Make your own M20 narrowband pic

Now try this M20 Triffid nebula Narrowband image.

The 3 subs are labeled with "Hubble" pallete RGB mapping, but you can mix em up anyway you want . I havent tried other combinations, ittl be interesting to see what other combinations you can make look good !.

I also used the HA (green) channel as an extra Lumanence layer to add sharpening (it has more data and can stand more processing before getting noisy).

Processing is exactly the same as in RGB, only the stars will have a pink halo (typical in narrowband pics), to avoid that, you need to reduce the star size in the red channel, and a bit in the blue channel if your fussy, but its not essential.

You will get strong colours, narrowband is good for that.

The 3 tiff files are the full res from my cam.

http://www.box.net/shared/dgjth43qfy
http://www.box.net/shared/84cm8i6ni2
http://www.box.net/shared/cffm8n976h

Just click on the images name and select save.

The thumbnail is my effort, and here

http://fredsastro.googlepages.com/M2...lBlrg-full.jpg

Its not hard, just treat it like an RGB and youll be fine.

Cheers
Fred
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Last edited by Bassnut; 07-06-2007 at 06:05 PM.
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