24 September 2007 Loki: a ground-layer adaptive optics high-resolution near-infrared survey camera
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Abstract
We present the design of a new high-resolution near-infrared survey camera that will take advantage of the wide corrected field afforded by the 6.5 m MMT's new multi-laser ground-layer adaptive optics (GLAO) system. GLAO technology will correct for turbulence close to the telescope aperture where typically 1/2 to 2/3 of the total atmospheric turbulence lies and is expected to deliver image widths of 0.1-0.2 arc seconds in the near-infrared across a wide range of seeing conditions. The new camera will use a 2 by 2 mosaic of JWST NIRCam detectors, 2048 x 2048 arrays sensitive from 0.6 - 2.5 μm based on Teledyne's HgCdTe HAWAII-2RG detector technology. The camera has a 4 arc minute square field, giving a plate scale of approximately 0.06 arc seconds/pixel, critically sampling the GLAO PSF. In addition, high resolution (0.25 arc seconds or better) multi-object spectroscopy can be supported with cold slit masks inside the dewar; allowing potentially hundreds of spectra to be obtained at once with resolutions of up to 10,000.
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Christoph Baranec, Christoph Baranec, Michael Lloyd-Hart, Michael Lloyd-Hart, Michael Meyer, Michael Meyer, } "Loki: a ground-layer adaptive optics high-resolution near-infrared survey camera", Proc. SPIE 6691, Astronomical Adaptive Optics Systems and Applications III, 669106 (24 September 2007); doi: 10.1117/12.733144; https://doi.org/10.1117/12.733144
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