M20 Trifid Nebula

HaHaHaGB image

click on image to enlarge

M20 Trifid Nebula

FLI IMG1024S "Dream Machine" Camera @ -35deg C

Schuler Hydrogen Alpha (656.3 / 9nm) bandpass filter

Celestron C14 Telescope @ 3910mm focal length, f/11

Optec TCF-S Temperature Compensated focuser

Astro-Physics AP1200GTO Mount

Takahashi FSQ106 guide scope

SBIG ST7E guide camera

Taken at Chew's Ridge location in Monterey County, Ca. on April 12, 2002

LLRGB technique where:

   L= Schuler 9nm Halpha

   R= Schuler 9nm Halpha

   G= Optec IR Blocking Green

   B= Optec IR Blocking Blue

Exposures:

Ha = 4 x 5 minutes

G = B = 1 x 5 minutes

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