NGC281 Emission Nebula in the light of Ha and [OIII] emission lines

click on image to enlarge

Taken on August 22, 2003 at Plettstone, a private residence in California's Gold Country near Yosemite National Park

Celestron C14 imaging scope @ f/11 (F=3910mm)

Finger Lakes Instrumentation IMG1024S imaging camera @-30 and @-27C

RCOS Optical Systems Dichroic Beam Splitter

SBIG ST7E Guide camera controlling 

SBIG AO7 Adaptive Optics System

Astro-Physics AP1200GTO mount

Finger Lakes Instrumentation CFW1 Color Filter wheel

Custom Scientific Narrowband Emission Line Filters

   Hydrogen alpha        656.3nm  3nm FWHM

   [Oxygen III]                 500.7nm  3nm FWHM

Six exposures of fifteen minutes through each filter. Total exposure time 3 hours

Maxim DL 3.20 used for image acquisition, calibration, DDP, color combination

CCDSOFT 5.00.071 used for guiding/AO7 control

SIGMA Prebeta 11 used for darks, flats and image stacking

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