NGC 457

NGC457LRGB(500).jpg (101706 bytes)

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Object Type: Open cluster
Constellation: Cassiopeia
Magnitude: 6.4
Size: 13'

The two bright stars near the top of the cluster, resembling a pair of eyes atop a stocky body, give rise to the informal name "ET cluster."

Equipment: Meade 14" LX200R/STL-11000M/Astrodon LRGB filters/Paramount ME
F-ratio: f/9.5
Exposures: LRGB: L 8 x 5 minutes, binned 2x2: R 8 x 5 minutes: G 8 x 5 minutes: B 8 x 5 minutes: RGB binned 3x3
Date: December 29, 2007
Location: Landers, California, USA
Technical Notes: I
ndividual exposures were obtained using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0. A Gaussian Blur was applied to the RGB image and the dim portions of the luminance image. A copy of the RGB image was combined with the original using Soft Light to enhance color.

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