NGC6820 Emission Nebula in Hydrogen Alpha light

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HaO3O3 combined as RGB

Taken on September  13, 2003 from my backyard in Castro Valley, Ca.

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

Finger Lakes Instrumentation IMG1024S imaging camera @-30C

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

6 exposures of 20 minutes each through Ha (2 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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