Open Cluster NGC6229

Globular cluster NGC 6229 was discovered by William Herschel on May 12, 1787, and first taken for a planetary nebula from his visual impression. Thus he cataloged it as H IV.50. It was only revealed as a "very crowded cluster" by d'Arrest in the mid 19th century. Dreyer's NGC lists it as globular cluster. The difficulty to resolve this cluster becomes reasonable when looking at its large distance of about 100,000 light years. It's on the fith position considering object from NGC/IC catalog.

Photo Details

  Telescope: Celestron C8N (1000mm)

  Camera: Sbig ST-2000XM, Sbig Filter wheel, Baader 1.25" HLRGB filters

  Mount: NJP Takahashi

  Guiding: Self-guided

  Exposure: L 12x480sec, R 4x480sec, G 4x480sec, B 4x480sec

  When: Spring 2014

  Other information: good transparency, good seeing, partially from the city of Tarnow


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