pngc281

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:

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