Object
Description:The Butterfly Nebula in Emission-Line
Type:Nebula
Constellation:Cygnus
Distance:5,000 ly
Image
Date:September 6, 2007
Location:Carlsbad, CA
Exposure:Ha 8x15 (bin 1x1)
Equipment
Optics:Takahashi FS-60C Refractor
Focal Length:354mm @f/5.9
Mount:Astro-Physics 900GTO
Camera:SBIG ST-2000XM
Focuser:Robo-Focus
Filters:CFW10A, Astrodon 6nm Ha
Software:CCD Commander, Maxim DL, CCDStack, Photoshop
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