NGC253, Spiral Galaxy in Sculptor

Too big? Here's a smaller image.

Imaging Equipment:

• Telescope: Takahashi FS-152 f/8 fluorite refractor at f/8.
• Zeiss II German Equatorial Mount
• Santa Barbara Instrument Group ST-8E NABG CCD camera (1530 x 1020 pixels, 9 x 9mm, monochromatic, 16 bit, 13.8 x 9.2mm array)
• CWF8 color filter wheel with IR-blocking red, green, blue and Hydrogen-Alpha (deep red) dichroic filters

Exposure Information:

• Date: Sunday September 16, 2001
• Location: Mt. Pinos, CA
• Elevation: Approx. 8300', OAT +40ºF
• Exposure time: 2.2 hours
• Composition: LRGB (70:20:20:20 minutes)
• RGB exposures were shot binned 2x2
• All exposures were 10 minutes each.
• North is up.

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