Subject:M17 Swan or Omega Nebulae in Sagittarius
Author: John Hobbs
Instruments: Williams Optics Mergez 80 fluorite triplet Super APO
Starlight Express HX916 Monochrome Camera
Astromick Type 2 LRGB filters
Orion manual filter wheel
Losmandy G11 Mount
Exposure time:30 minutes each HaRGB, 10 x 3 min unguided exposures
Place:Groveland, MA, seeing very good
Date: August 23, 2008