Cone & Fox Fur Nebula Narrowband

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Photographer Wes Stauffer
Optics Takahashi TOA - 130F with Flattener
Mount Paramount ME
Guiding Takahashi FS 60C with STL External Guide Head
Camera SBIG STL 11000M
Filters Astrodon Ha, SII, OIII
Dates/Times Ha December 15 - 17, 2006, SII and OIII February 12 - 16, 2007
Location Tiburon, CA
Exposure Details Ha - SII - OIII  450 x 240 x 280  (Ha 30 minute subs, SII & OIII 20 minute subs)
Acquisition CCDSoft 5 & The Sky 6 controlled via CCDAutopilot 3
Processing CCDStack, PhotoShop CS2
 

Notes

 

While it may appear similar to an standard RGB image, this version of the Cone and Fox Fur nebula in the Christmas Tree cluster was produced with Astrodon narrowband filters.  In this interpretation, Ha is assigned to Red, SII is assigned to Green and OIII is assigned to Blue.  Even after 4 hours, the OIII data was very weak except around the bright star S Mon so the dominant color comes from the strong Ha data which is accented by the weaker SII channel.  The image has been cropped from the original due to registration issues between the Ha data captured in December 2006 and the SII and OIII data taken in February 2007.