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Vance Petriew at Dobsonian Telescope (SSSP 2012).jpg
Astronomer Vance Petriew at the eyepiece of his 20-inch Dobsonian reflector telescope, at the 2012 Saskatchewan Summer Star Party in Cypress Hills, SK. This is a single 20 second exposure with the Canon 5DMkII at ISO 4000, and 24mm Canon L-series lens at f/2. A faint aurora adds the horizon colours. The photo was taken on the occasion of the second return of Comet Petriew 185/P since its discovery 11 years earlier in 2001 at this very same location.
- © Alan Dyer
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- 3744x5616 / 15.4MB
- Contained in galleries
- Observers, Star Parties & Telescopes