Last updated on April 24, 2014 at 17:35 EDT
Cloaked Dome
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Cloaked Dome

June 23, 2010
Cloaked Dome This "invisible dome" image of the Gemini North telescope was made by digitally "stacking" images of the open Gemini dome as it rotated. Approximately 40 individual 5-second exposures were stacked to produce the transparent dome effect, and one additional one-minute exposure was obtained of the sky following the dome rotation. Technical Details: All images used a Nikon D1X camera with a 14 millimeter f/2.8 Nikkor lens at an ISO setting of 800. Additional lighting was used inside the dome to illuminate the telescope and inside of the dome. (Date of Image: Unknown)