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NGC457

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Object Notes:
  • Constellation: Cassiopeia
  • Location: RA: 00h 47m 6.0s Dec: -20d 46' 00" Epoch 2000
  • Size: 13.0 arc-minutes
  • Magnitude: 6.4
  • Type: Open Cluster
  • AKA: OCL 321
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:
21 x 1 minute Luminance unbinned
7 x 1 minute each R/G/B, all binned 3x3
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:
10/06/04
Post Processing:
CCDSoft, CCDSharp, MaxIM DL, Photoshop CS