Spiral Galaxy NGC 6946
Taken @ Kitt Peak National Observatory June 16 & 17, 2004 Image Credit: Fred Calvert / Adam Block / NOAO /AURA / KPNO / NSF
NGC 6946 is a face-on SAB(rs)cd magnitude 8.9 galaxy in the constellation Cepheus. This classification refers to the presence of a small core with multiple well-defined arms (cd), with a poorly-developed bar across the middle (AB) and an inner confused ring (rs). Nearly twenty million light-years from Earth, it is over seventy thousand light-years across.
Seven supernovae have been discovered in this galaxy and are listed below.
With this number of supernovae which have been found in this galaxy, NGC 6946 is leading the statistics, just one SN more than follow-up M83.
The data for this image was taken over two nights.
20" RC Optical System Ritchey Chretien - Cassegrain @ f 5.5
Software Bisque Paramount ME Robotic Mount
SBIG ST10XME with Color Filter Wheel and 6.3 Focal Reducer
SBIG ST10XME CCD 20" RC Optics Telescope Advanced Observer Facility Me at 4:00 AM "Coffee"
Luminance = 120 minutes binned 1x1
Red = 15 minutes binned 1x1
Green = 15 minutes binned 1x1
Blue = 15 minutes binned 1x1olor filter wheel
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