NGC 253

Object Information:                   NGC 253
                                                 Mag. - 7.1
                                                 Constellation - Sculptor
                                                 Location - R.A. 00:47.6,  Dec. -25.17
                                                 Distance -  11 million light years,
                                                 Size - 40,000 light years across

Imaged at:                                Observatory Campground, Palomar Mountain, San Diego County, California,
                                                 Elevation - 4800 feet

Equipment:                               Optics - Celestron C-11 at f/3.3
                                                Mount - Losmandy G-11,
                                                Camera - Santa Barbara Instrument Group (SBIG) ST-7  CCD,
                                                Focal Reducer/Field Flattener - Optec 0.33,
                                                Filter - #12 pale yellow

Exposure Information:              October 14, 1999 at 00:06 Pacific Daylight Time
                                                1800 second self guided exposure,
                                                High Resolution Mode (unbinned pixels @ 2.0 x 2.0 ^ sec.),

Field of View:                           26 x 17 ^ minutes

Image Acquisition Software:     MaxIm DL CCD utilizing the ST-7's self guiding feature,

Image Processing Software:      MaxIm DL - Dark field subtraction, flat field, sharpening.  Photoshop 5.0 - Final adjustment of levels and contrast, conversion to JPEG format.

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All the images in this site are © Copyright 1999 by Dean Jacobsen.
Any use of these images without the prior written consent or knowledge of the author is strictly prohibited.
Contact Dean at deanjacobsen@adelphia.net  for more information.