Jeff Terry's Astrophotos/M51 120 min.jpg

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The top image is a sum of twelve 10 minute exposures with an Astro-Physics 130 Starfire GT
located at the Red Observatory. The scope was equipped with an SBIG STL-11000 with a 5 position filter wheel.
The scope is mounted on an AP 1200 mount.
The image was guided with the interal guider at 10 sec intervals. The rms error was 0.42 pixel.
The image was collected using Equinox Image.
The image was processed using the 64 bit version of iCCD.
The next three images indicate the location of M51 and come from a plate solve at astrometry.net
Imaging was through a high wispy cloud layer just after a full moon. Didn't make for the best imaging on Jun 14, 2014.
M51 is known as the Whirlpool Galaxy. It is an interacting galaxy whose companion is thought to have made two disk crossings.
It is located approximately 23,000,000 light years from the earth.
This was the first time I had tried a 10 minute subexposure. Wasn't too bad given the weather circumstances. One can see a little bit of image rotation at
the corner of the image. I need to tweak the polar alignment a bit more.