Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.0509d&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #05.09; Bulletin of the American Astronomical Society, Vol. 33, p.792
Astronomy and Astrophysics
Astronomy
2
Scientific paper
Development of a new facility 350 micron camera (`SHARC II') for the 10 m Caltech Submillimeter Observatory is underway. The camera will feature a 12x32 array of doped silicon Pop-Up Bolometers -- scheduled for delivery from NASA-Goddard to Caltech toward the end of 2001 -- cooled with 3He to 0.3 K. Detector absorption resonances, filters, and anti-reflection coatings are optimized for 350 microns. The pixels will sub-sample the diffraction pattern of the CSO with a spacing of 5 arcsec (0.7 lambda/D). We are implementing `total power' amplifiers to allow scanned observations with good image reconstruction fidelity and sensitivity. The expected point-source sensitivity of SHARC II in excellent weather is 0.5 Jy s-1/2, an improvement of a factor of 2 over the existing SHARC (Wang et al. 1996; Benford et al. 1999). We report on an engineering run with the camera at the CSO in September 2000 using a partial (16-pixel) detector array.
Allen Christine
Collins William
Dowell Charles (Darren)
Gardner Martin
Jhabvala Murzy
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