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The Butterfly Nebula in Emission-Line
Type Nebula
Constellation Cygnus
Distance 5,000 ly
More Info
Date 14 Jul 2006 (Summer)
Place Carlsbad, CA
Exposure Data SII:Ha:OIII 20:120:20 mins @ -10C
SII 4x5 (bin 2x2), Ha 8x15 (bin 1x1), OIII 4x5 (bin 2x2) as RGB
Notes Ha also used as the Luminance layer
Optics Takahashi FSQ-106N Refractor
Focal Length 530mm @f/5
Mount Celestron CGE
Camera SBIG ST-2000XM
Focuser Robo-Focus
Filters CFW10A, Astrodon 6nm SII, Ha, OIII
Software Maxim DL, Photoshop

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