FOUR-SHOOTER: A LARGE FORMAT CHARGE-COUPLED-DEVICE CAMERA FOR THE HALE TELESCOPE.

James E. Gunn, Michael Carr, G. Edward Danielson, Ernest O. Lorenz, Richard Luccinio, Victor E. Nenow, J. Devere Smith, James A. Westphal, Donald P. Schneider, Barbara A. Zimmerman

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Abstract

We describe an astronomical camera for the 200-in. Hale telescope using four 800 multiplied by 800 Texas Instruments CCDs in an optical arrangement that allows imaging of a contiguous 1600-pixel-square region of sky. The system employs reimaging optics to yield a scale of 0. 33 arcsec per pixel, a good match to the best seeing conditions at Palomar Observatory. Modern high-efficiency coatings are used in the complex optical system to yield a throughput at peak efficiency of nearly 50% (including the losses in the telescope), corresponding to a quantum efficiency on the sky of about 30%. The system uses a fifth CCD in a Spectroscopic channel, and it is possible to obtain simultaneous imaging and spectroscopic observations with the system. The camera may also be used in a scanning mode, in which the telescope tracking rate is offset, and the charge is clocked in the chips in such a manner as to keep the charge image aligned with the optical image. In this way, a survey for high-redshift quasars has been carried out over a large area of sky.

Original languageEnglish (US)
Pages (from-to)779-787
Number of pages9
JournalOptical Engineering
Volume26
Issue number8
DOIs
StatePublished - Jan 1 1987

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

Gunn, J. E., Carr, M., Danielson, G. E., Lorenz, E. O., Luccinio, R., Nenow, V. E., Smith, J. D., Westphal, J. A., Schneider, D. P., & Zimmerman, B. A. (1987). FOUR-SHOOTER: A LARGE FORMAT CHARGE-COUPLED-DEVICE CAMERA FOR THE HALE TELESCOPE. Optical Engineering, 26(8), 779-787. https://doi.org/10.1117/12.7974149