IC 1805 (Heart Nebula) Widefield in Hydrogen Alpha

All Images Copyright Steve Cannistra

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Magnitude:  6.5 (open star cluster)
The FOV shown here is approximately 3.9 x 2.6 degrees, at an image scale of 3.5"/pixel.
Distance: 6,150 light years
RA: 2h 32m 41s
Dec: 61 degrees 27' 25"

IC 1805 is a young star cluster surrounded by Ha emitting nebulosity, located in the constellation Cassiopeia.  There is a great deal of interesting detail within this image that can be best appreciated on the higher resolution view, as well as in previous images shown here and here.  Please click here for more information about this object.

Photographic Details:

Date:  December 30, 2006.
Scope:  Takahashi FSQ106 at f5 on the G11 Losmandy Mount.
Autoguider:  SBIG STV with e-finder.
Camera:  STL11K.

Baader 7nm Ha filter.
Exposures:  12 x 20' unbinned, total exposure 4 hours.
Conditions:  Temperature 24 degrees F, good transparency, average seeing, clear, bright moonlight.
Post-processing:  Calibrated, aligned, and Sigma Clip combined in Maxim, followed by DDP in ImagesPlus (IP).  Further processing in Photoshop CS (16 bit format).

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