M13

Updated: 9.20.03

One of the favorite globular clusters in the north is M13, located in Hercules. This glob makes a nice comparison to M22, with a much sparser background. This was taken at the home site with the Tak Sky90 unguided. Again, there is a nice scattering of red supergiants across the face of the globular. Some field curvature is evident with the larger H9C chip, but this will be taken care of with the f/4.5 focal reducer/flattener in the near future.
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Image info:

Takahashi Sky90 piggybacked on a 12" SCT and Losmandy Titan Mount

Starlight Express SXV-H9C one-shot ccd camera

17x2 mins with IDAS LPR filter

f/5.6

Stacked and processed in Astroart (ddp/unsharpmask)

unguided

9.14.03

Orlando, Fl