The Oxford SWIFT Spectrograph: first commissioning and on-sky results
نویسندگان
چکیده
The Oxford SWIFT spectrograph, an I & z band (6500–10500 Å) integral field spectrograph, is designed to operate as a facility instrument at the 200 inch Hale Telescope on Palomar Mountain, in conjunction with the Palomar laser guide star adaptive optics system PALAO (and its upgrade to PALM3000). SWIFT provides spectra at R( / )~4000 of a contiguous two-dimensional field, 44 89 spatial pixels (spaxels) in size, at spatial scales of 0.235 , 0.16 , and 0.08 per spaxel. It employs two 250μm thick, fully depleted, extremely red sensitive 4k 2k CCD detector arrays (manufactured by LBNL) that provide excellent quantum efficiency out to 1000 nm. We describe the commissioning observations and present the measured values of a number of instrument parameters. We also present some first science results that give a taste of the range of science programs where SWIFT can have a substantial impact.
منابع مشابه
× optical zoom and extreme optical image stabilisation : diffraction limited integral field spectroscopy with the SWIFT spectrograph
When commissioned in November 2008 at the Palomar 200 inch Hale Telescope, the Oxford SWIFT I&z band integral field spectrograph, fed by the adaptive optics system PALAO, provided a wide (3×) range of spatial resolutions: three plate scales of 235 mas, 160 mas, and 80 mas per spaxel over a contiguous field-of-view of 89×44 pixels. Depending on observing conditions and guide star brightness we c...
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