Starry Vistas by Don J. McCrady
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The Butterfly Nebula

The Butterfly Nebula in Cygnus is part of a much larger region of nebulosity surrounding the bright star Sadr (to the right edge of this image), the center star of the Northern Cross.  For reference, the butterfly nebula is contained within the Gamma Cygni Nebula, which can be seen here in my gallery.

Narrowband

Click for full resolution

In this false-colour image Sulfur-II is mapped to red, Hydrogen-Alpha is mapped to green, and Oxygen-III is mapped to blue.

Takahashi Sky 90 at f/4.5
SBIG STL-4020M (remote guide head)
Takahashi EM-200
H-Alpha: 15 x 20 minutes
OIII: 12 x 20 minutes
SII: 12 x 20 minutes
Processed with Maxim/DL, CCDStack, and Photoshop CS4
Noel Carboni's Astronomy Tools