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Dusk at McDonald Observatory

The domes of the 82" Otto Struve telescope (left) and the 107" telescope on Mt. Locke, McDonald Observatory. This is five frames stitched together by Autostitch and then cropped. It was shot near the end of astronomical twilight, Nov. 18, 2006.

 

Exposure info: 1/4 second each frame, F 3.5, ISO 1600

Camera: Pentax istDS DSLR standard digital zoom at about 18mm

Hand-held, on a monopod/walking stick

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Uploaded on November 20, 2006
Taken on November 20, 2006