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Hercules Cluster (Galaxy Cluster in the Hercules Constellation)

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Object Notes:
  • Constellation: Hercules
  • Location: RA: 16h 05m 08s Dec: 17d 45' 28" Epoch 2000
  • Type: Galaxy Cluster
  • AKA: Abell 2151
Instrument:
Ritchey-Chretien 32" Telescope
Focal Ratio:
f7.2 (prime focus)
Camera:
SBIG STL-11000 CCD camera
(See product review in July, 2004 issue of Sky & Telescope magazine.)
Exposure:
12 x 5 minutes plus 9 x 15 minutes Luminance unbinned
4 x 5 minutes each R/G/B unbinned
Guiding:
Off-Axis with STV Autoguider (Santa Barbara Instrument Group)
(See product review in May, 2003 issue of Astronomy magazine.)
See Photo/Guiding Equipment.
Date:
April 10, 2005 and April 12, 2005
Post Processing:
CCDSoft, CCDSharp, MaxIM DL, Photoshop CS