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The Simmons Camera

  The Simmons Camera (formerly from the Mayall RC spectrograph) is of the Cassegrain Mangin-Mirror Maksutov type, employing two corrective meniscus lenses. The focal length is 381 mm.

The throughput of the Simmons Camera is flat at 45%. This crosses the expected throughput curve of the Bench Spectrograph Camera at about 3800 Å. The Simmons Camera should be used for observations that extend blueward of about 3800 Å.



Sam Barden
Tue Aug 29 16:45:05 MST 1995