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Tuesday, January 23 2018 @ 01:01 am EST


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 The Lagoon Nebula
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Pablo Rosell
 Thursday, June 20 2013 @ 02:23 am EDT (Read 1903 times)  
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Hi guys,
Here's a run for the Lagoon Nebula (M8). Hope you like it.
Pablo


Pablo - Fayetteville, AR
 
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dgrosvold
 Thursday, June 20 2013 @ 06:49 pm EDT  
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Gorgeous! There's so much structure in the image. I assume this is a composite of H-alpha, H-beta, and O-III plus luminance? How many each and for how long?

Thanks!


Dave - Morrow, AR
 
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Pablo Rosell
 Thursday, June 20 2013 @ 08:46 pm EDT  
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Thanks Dave!

It only consists of 6 15min subs with H-α and 6 15min subs of O-III.
H-α is mapped to red, O-III to blue and a synthetic green channel is made with both of them using the technique found here: http://www.starrywonders.com/bicolortechniquenew.html.
Then to get those tones you use selective color in PS to make it look "more appealing". More or less the technique found here: http://bf-astro.com/hubblep.htm
Finally, for the luminance layer I used the H-α channel. Sometimes I rather combine the H-&alpha and O-III for luminance.

Cheers,
Pablo


Pablo - Fayetteville, AR
 
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dgrosvold
 Friday, June 21 2013 @ 10:03 pm EDT  
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Interesting technique. Thanks for the explanation. I've got the scope, and I've got the DSLR. Now I need a good mount...


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