Physicist Jon Kaufman fueling the Bicep2 Telescope with liquid helium.
Technical Details
- Camera: Canon EOS 5D Mark II
- Taken: 2012-11-25
- Focal length: 24mm
- Aperture: f/3
- Exposure: 1/100 second
- ISO: 3200
Jeffrey Donenfeld
Explorer | Investment Director | Public Speaker
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