gfnwaldron
Gregg
Registered: July 2008
Location: Morristown, NJ
Posts: 114
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Wed November 4, 2009 11:16
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joshben1
Registered: May 2008
Location: Tornado, WV
Posts: 555
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Wed November 4, 2009 13:36
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templec
Craig & Tammy
Registered: October 2008
Location: Hendersonville, TN
Posts: 588
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Wed November 4, 2009 16:04
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sdbodin
Steve
Registered: May 2008
Location: Mattawa, WA , USA
Posts: 127
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Wed November 4, 2009 17:24
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admin
System Admin ( Gene Hunter )
Registered: May 2008
Location: Bethune, SC
Posts: 810
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Fri November 6, 2009 08:46
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Clear Skies
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mike d
Mike D
Registered: December 2008
Location: Swindon UK
Posts: 17
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Sat November 7, 2009 19:22
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Swindon,
United Kingdom
Skywatcher 250px f4.8 ,Conrad/ Rajiva modded EQ6, Skywatcher 80ED,2 x home made servo motorised focuser's(one for each scope),Dmk21, HX916, filter wheel and LRGB filters.
Website:http://www.freewebs.com/mikesastroimaging/
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gardnerdgerry
Registered: May 2008
Location: New Hampshire
Posts: 32
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Sun November 8, 2009 10:16
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Gardner
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JohnBuonomo
Registered: May 2008
Location: N Billerica MA
Posts: 422
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Mon November 9, 2009 23:16
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Roy Salisbury
Registered: October 2009
Location: Las Vegas, NV
Posts: 51
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Thu November 19, 2009 22:09
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Can you explain how you did this? I see that you used narrow band filters for the RGB .. But I am confused .. I have never seen this done with a DSLR..
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mattssporre
Registered: June 2008
Location: Stockholm, Sweden
Posts: 51
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Fri November 27, 2009 10:06
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Roy, sorry did not see your question until now.
I put Ha and OIII filter using stepping rings in front of the 200mm lens. I then extracted the red channels from the Ha shots and the green channel from the OIII and the blue channel from the OIII.
This gave BW images that I combined into color using Ha for the red channel, in the blue channel i combined 90% of the OIII blue plus 10% of the Ha (simulating the fact that H-alpha is normally accompanied with ca 10-20% of H-beta which is a blue wavelength). The green channel I constructed from 90% of the OIII green and 10% Ha. The Ha part into the green channel there is no real scientific support for, but it gave the image colors closer to the RGB ones.
BR
Matts
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