The 6.5-m MMT's f/5 wide-field optics and instruments

Daniel Fabricant; Robert G. Fata; Brian A. McLeod; Andrew H. Szentgyorgyi; J. Barberis; Henry W. Bergner Jr.; Warren R. Brown; Nelson Caldwell; Maureen A. Conroy; Roger Eng; Harland Epps; G. Furesz; Tom M. Gauron; John Geary; Richard E. Goddard; Lee Hartmann; Edward N. Hertz; M. Honsa; Mark Mueller; Timothy J. Norton; Mark P. Ordway; John B. Roll Jr.; G. Grant Williams; Deborah L. Freedman-Woods; Joe M. Zajac

doi:10.1117/12.551729

30 September 2004 The 6.5-m MMT's f/5 wide-field optics and instruments

Daniel Fabricant, Robert G. Fata, Brian A. McLeod, Andrew H. Szentgyorgyi, J. Barberis, Henry W. Bergner Jr., Warren R. Brown, Nelson Caldwell, Maureen A. Conroy, Roger Eng, Harland Epps, G. Furesz, Tom M. Gauron, John Geary, Richard E. Goddard, Lee Hartmann, Edward N. Hertz, M. Honsa, Mark Mueller, Timothy J. Norton, Mark P. Ordway, John B. Roll Jr., G. Grant Williams, Deborah L. Freedman-Woods, Joe M. Zajac

Author Affiliations +

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.551729
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

In 2003, the converted MMT’s wide-field f/5 focus was commissioned. A 1.7-m diameter secondary and a large refractive corrector offer a 1° diameter field of view for spectroscopy and a 0.5° diameter field of view for imaging. Stellar images during excellent seeing are smaller than 0.5" FWHM across the spectroscopic field of view, and smaller than 0.4" across the imaging field of view. Three wide-field f/5 instruments are now in routine operation: Hectospec (an R~1000 optical spectrograph fed by 300 robotically-positioned optical fibers), Hectochelle (an R~40,000 optical spectrograph fed by the same fibers), and Megacam (a 340 megapixel, 36 CCD optical imager covering a 25' by 25' format).

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Daniel Fabricant, Robert G. Fata, Brian A. McLeod, Andrew H. Szentgyorgyi, J. Barberis, Henry W. Bergner Jr., Warren R. Brown, Nelson Caldwell, Maureen A. Conroy, Roger Eng, Harland Epps, G. Furesz, Tom M. Gauron, John Geary, Richard E. Goddard, Lee Hartmann, Edward N. Hertz, M. Honsa, Mark Mueller, Timothy J. Norton, Mark P. Ordway, John B. Roll Jr., G. Grant Williams, Deborah L. Freedman-Woods, and Joe M. Zajac "The 6.5-m MMT's f/5 wide-field optics and instruments", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.551729

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