Binospec: A Wide-field Imaging Spectrograph for the MMT
| Autor: | Vladimir Kradinov, Matthew R. Smith, Harland W. Epps, Henry Bergner, John C. Geary, Deborah Freedman Woods, Patricia Brennan, Daniel G. Fabricant, Robert G. Fata, Brian McLeod, Warren R. Brown, Stephen Amato, Jack Barberis, Mark Mueller, Joseph Zajac, Igor Chilingarian, Thomas Gauron |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Wavefront
Physics 010504 meteorology & atmospheric sciences Aperture business.industry FOS: Physical sciences Astronomy and Astrophysics 01 natural sciences Collimated light law.invention Primary mirror Telescope Optics Space and Planetary Science law 0103 physical sciences Reflection (physics) business Focus (optics) Astrophysics - Instrumentation and Methods for Astrophysics 010303 astronomy & astrophysics Spectrograph Instrumentation and Methods for Astrophysics (astro-ph.IM) 0105 earth and related environmental sciences |
| Popis: | Binospec is a high throughput, 370 to 1000 nm, imaging spectrograph that addresses two adjacent 8' by 15' fields of view. Binospec was commissioned in late 2017 at the f/5 focus of the 6.5m MMT and is now available to all MMT observers. Aperture masks cut from stainless steel with a laser cutter are used to define the entrance apertures that range from 15' long slits to hundreds of 2" slitlets. System throughputs, including the MMT's mirrors and the f/5 wide-field corrector peak at ~30%. Three reflection gratings, duplicated for the two beams, provide resolutions ($\lambda$/$\Delta \lambda$) between 1300 and $>$5000 with a 1" wide slit. Two through-the-mask guiders are used for target acquisition, mask alignment, guiding, and precision offsets. A full-time Shack-Hartmann wave front sensor allows continuous adjustment of primary mirror support forces, telescope collimation and focus. Active flexure control maintains spectrograph alignment and focus under varying gravity and thermal conditions. Comment: PASP in press; 45 pages, 59 figures |
| Databáze: | OpenAIRE |
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