The Iris Nebula
A twenty-minute-exposure of NGC 7023 taken with our newly acquired 16" telescope.
Date: October 26, 2017
Location: Dominion Astrophysical Observatory, Victoria, BC
Optics: TPO 16" f/8 Ritchey-Chretien Truss Tube Telescope
Mount: Paramount ME unguided
Camera: Canon EOS 5D Mark III
Exposure: 10 light frames of 120 seconds, ISO 3200
Processing: Light frames calibrated with dark frames in ImagesPlus.