Tag Archives: astronomy photography lens

The Dragonfly Telescope with $100,000 Lens

The Dragonfly Telescope with $100,000 Lens. The Dragonfly Telephoto Array is one of the smallest professional astronomical telescopes in existence.  It uses ten ordinary Canon 400mm f/2.8L IS II lenses that cost $9,999 each. That’s $100,000 in photo gear. Commissioned in 2013 with only three lenses, the array is growing in size …

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