Higher-resolution
versions: 1280 x 1024 1680 x 1050 2162 x 1440
Object Type:
Open cluster, type II2m
Constellation: Perseus
Magnitude: 6.4
Size: 18'
Equipment:
Vixen 102-ED/TS Optics field flattener/ST-10XME/Astrodon LRGB filters/Paramount ME
F-ratio: f/6.5
Exposures: LRGB: L 12 x 5 minutes: R 12 x 5 minutes: G 12 x 5 minutes: B
12 x 5 minutes: RGB binned 2x2
Date: December 23, 2011
Location: Landers, California, USA
Technical Notes: Individual exposures were dithered using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0. Reduce
Noise was applied to the RGB image and the dim portions of the luminance image. Gaussian
Blur of 1 pixel was applied to the RGB image.