Howard's Astronomical Adventures
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M51 : Whirlpool Galaxy in Canes Venatici

Photograph of M51

The wonderful spiral structure of this galaxy is a result of the interaction with the smaller galaxy NGC 5195. This is the full field of view of my telescope at f6 with the 350D camera.

Click image for larger version (1440 x 983, 500kb).

Additional information about this object can be found on the SEDS website

Photograph Information
LocationFlint Hills of Kansas
TelescopeAP130 @ f6 w/field flattener
CameraCanon 350D, Hutech modified type I
ExposureStack of 21, 9 minute exposures at ISO 800
Notes36°F, 87%rh, fair to average transparancy, strong gusts.

Calibrated with bias, dark and flat frames.
Initial RAW conversion, registration and stacking in IRIS.
Noise reduction in PixInsight LE 1.02 Additional adjustments in Photoshop CS2

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