Narrow Field View of NGC 7000 in Hydrogen Alpha

NGC 7000
All Images
Copyright Steve Cannistra

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Magnitude:  ?
Size: about 60' for this field; 3 x 2 degrees for the entire North American Nebula region.
Distance: 1,500 light years
RA: 20h 59m 51s
Dec: 43 degrees 39' 11"

The North American Nebula is a large emission nebula in the constellation Cygnus.  It is named for its resemblance to North America, although the "Gulf" or "Central America" section shown above is also true to its namesake and perhaps the brightest region for visual observation using a UHC filter at a dark site.  The FOV of my current imaging set-up is about 1 degree, which lends itself to capturing a detailed view of this interesting region.

Photographic Details:

Date:  August 26, 2004
Takahashi Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  SXV-H9
Astronomik Ha filter (13 nm bandpass).
Exposures:  19 x 5' each, binned 1 x 1, 95 minutes total.
Conditions:  Temperature 65 degrees F; below average transparency; humid; average seeing; mild intermittent breeze.
No dark, bias, or flat frames used.  Two-star aligned in ImagesPlus; Sigma combined using RC Sigma Reject in MaximDL, followed by DDP in ImagesPlus.  Subsequent levels and curves adjustments in Photoshop CS (16 bit format).

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