IC 1318 - The Butterfly Nebula in Cygnus


Copyright 2010 Hap Griffin

IC 1318 is a large region of nebulosity in the central portion of the constellation of Cygnus...near the bright star Gamma Cygni (otherwise known as Sadr) shown at the far right.  Due to the shape of this nebula, it is also known informally as the Butterfly Nebula, with the dark dust lane LDN 889 forming the butterfly's body.  The open star cluster at the upper right is NGC 6910.  

This image was captured through a narrowband filter admitting only a narrow slice of spectrum around the wavelength of glowing hydrogen.  Thus it is a monochrome (single color) image displayed as shades of grey.

IC 1318 lies at a distance of 5000 light-years. 


Date/Location:    July 2, 2010     Griffin/Hunter Observatory    Bethune, SC
Camera: QSI 583wsg
Filters: Astrodon E Series Generation 2 HA (5nm)
CCD Temperature: -10 C
Instrument:    Takahashi FSQ-106N  
Focal Ratio:   f/5
Mount: AP-1200
Guiding:    Auto via the QSI camera's built in Off-Axis Guider mirror and an SBIG ST-402 Guider
Conditions:    Clear but with a 3rd quarter moon nearby
Weather:    60 F, still
Exposure: 240 minutes total (12 x 20 min HA)
Capture: CCDAutopilot 4 w/ Maxim DL Camera Control, focused automatically w/ FocusMax   
Processing:    Frame calibrations, alignment and stacking with ImagesPlus v3.80.  Finishing in Photoshop CS4.