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The Crescent Nebula NGC 6888 H-Alpha, OIII and SII "Hubble Palette", 



    
        

            Terry Hancock

The Crescent Nebula NGC 6888 H-Alpha, OIII and SII "Hubble Palette"

Description

Filters were asigned with OIII as the blue channel, H-Alpha as the green channel and SII as the red channel. H-Alpha was shot un binned, OIII and SII were shot binned 2x2.
Total Exposure time 30 hours

Thanks For Looking
All the Best & Clear Skies
Terry
Down Under Observatory
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Image Information
Location: DownUnder Observatory, Fremont MI
Date of Shoot 22nd, 23rd, 25th July, 26th through to 8th Aug 2012
Exposures:
OIII 28 x 30 mins binned 2x2
SII 24 x 30 mins binned 2x2
HA 8 x 30 mins unbinned
Camera: QHY9M monochrome CCD, cooled to -30C www.astrofactors.com
StarlightXpress Color Filter Wheel
Scope: Astronomy Technologies Astro-Tech 12" f/8 Ritchey-Chrétien astrograph
Autoguided using StarlightXpress Lodestar autoguider, StarlightXpress Ultra Slim Off Axis guider
Paramount GT-1100S German Equatorial Mount (with MKS 4000)
Image Aquisition software Maxim DL5
Stacking software CCDStack
Post Processing Photoshop CS5

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Author

terry.hancock
Terry Hancock
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The Crescent Nebula NGC 6888 H-Alpha, OIII and SII "Hubble Palette", 



    
        

            Terry Hancock