An image stacker for high-resolution spectroscopy on the multiple mirror telescope

Details An image stacker for high-resolution spectroscopy on the multiple mirror telescope An image stacker for high-resolution spectroscopy on the multiple mirror telescope

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..386c&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 94, Apr. 1982, p. 386-389.

Physics

Optics

25

Cassegrain Optics, High Resolution, Image Resolution, Spectroscopic Telescopes, Astronomical Spectroscopy, Mirrors, Slits, Spectral Resolution, Systems Engineering

Scientific paper

An image stacker has been in regular use with a conventional high-resolution Cassegrain echelle spectrograph on the MMT since 1980. This device takes advantage of the unusual optical configuration of the MMT and improves the slit efficiency by a factor of 2.5. Small lens-prisms are used at a preslit to redirect the six individual telescope beams into a single filled beam. A lens then reimages the preslit onto the input slit of the spectrograph and decreases the f/number of the redirected beam by a factor of nearly 3.5.

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