Sunday, September 05, 2004

Open Clusters in Lacerta

Conditions:
Scattered cloud, medium transprency, poor seeing, moon at 55% waning gibbous

Targets Observed:
NGC 7243 (sketched), NGC 7209, M39

Notes

The sky is changing. Lacerta is high these nights, lying between Cygnus and Casseopeia. Sketched what I could of NGC 7243 tonight. It's a very nice tight cluster mostly consisting of stars no brighter than 9th magnitude that appear to be held in a spiral of brighter stars. The cluster is young at 100 million years old. NGC 7209 was less impressive, but M39, quite a large cluster gave me pause. The moon was up when I began observing, so I stuck to open clusters tonight. Both NGC clusters were easy to find using Deneb, M39 and the brighter stars of the Lacerta asterism

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