NGC281
To see the faint detail in this
image, adjust your monitor's brightness and contrast to clearly show all 17
steps in this grayscale chart:
Imaging Equipment:
- Telescope:
Takahashi FS-152 6" f/8 fluorite refractor reduced to f/6
- Zeiss
II German Equatorial Mount (an AstroPhysics 600E
in German disguise!)
- 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 Ha and IR-blocking red, green and blue dichroic filters
Exposure
Information:
- Date:
Sunday October 14, 2001
- Location:
Mt. Pinos, CA
- Elevation:
Approx. 8300', OAT +39F
- Composition:
LRGB with L=Ha+R
- Ha:R:G:B
= 100:20:20:40 minutes. Total exposure time: 3 hours
- All
subexposures were 10 minutes each
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