Canon 350D Hap Griffin Baader Mod
10x180sec at iso 1600
10x60sec at iso 1600 (core)
30 Darks/Flats/Bias
Celestron 9.25 reduced 0.63

Astronomy Magazine Picture of the Day July 25, 2008

This globular is so tightly packed, that I had to use a second set of data at shorter exposures to keep the core from oversaturating.

M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more spectacular Messier 13. It may be a bit younger than M13 as its turnoff point is shifted to the brighter and bluer end.

M92, or NGC 6341, is about 26,000 light years distant, only little more than its brighter apparent neighbor M13, and is approaching earth at a speed of 112 km/sec.

May 28. 2008