Tag: Star Clusters
NGC 2244
by Mike Hankey, under Nebula
Here is a photo of NGC 2244 an open cluster within the Rosetta Nebula discovered by John Flamsteed in 1690. The Rosetta Nebula is a giant molecular cloud and the stars inside this cluster were formed from the nebula’s matter. You can see bits of the nebula cloud in the picture below.
M103
by Mike Hankey, under Stars
Here’s a photo of Messier 103 an open cluster in the constellation Cassiopeia. This image is comprised of approximately 20×2 minute exposures stacked with flats and darks using Deep Sky Stacker.
M15 – Globular Star Cluster
by Mike Hankey, under Stars
Sunday night was a great clear night. The crescent moon set early and the clouds stayed away until about 1:00 AM. I used my auto-guider for the first time since setting up the new observatory and it worked out pretty well. I was able to guide an object and keep it centered for well over an hour. I was averaging a little less than a two arc second error rate which should be improved when I perfect my polar alignment.
Here is my first picture of Messier 15, a globular star cluster hidden in the constellation Pegasus. This image is the result of 3×5 minute exposures and 1×1 minute exposure. I manually stacked the frames in Photoshop.
For comparison sake, here is a picture of M15 from the Hubble telescope. Its a little nicer than my first attempt, but considering my rig didn’t cost $1,500,000,000 to setup, I think I did alright.




