Brian McLeod Smithsonian Astrophysical Observatory

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Presentation transcript:

Brian McLeod Smithsonian Astrophysical Observatory MMT Megacam Brian McLeod Smithsonian Astrophysical Observatory

Basic Parameters 36 2048x4608 13.5micron pixels (e2v ccd42-90) 0.08”/pixel, currently binned by 2 to 0.16” 200kps through 72 amplifiers 2 additional ccd42-90s for guiding/focus SAO-built controller by John Geary

Megacam as seen at SDW2002

CCD SIMULATOR TEST BOX SCOPE CONNECTIONS

300mmx300mm Sloan-r filter by Sagem

Megacam Performance Gain: 3-4 e-/ADU Read noise: 4-5e- at 200kHz CCD Temps: -115C to -130C depending on focal plane location Some large scale flat fielding errors

Image Quality FWHM (ARCSEC) PIXEL POSITION

Astrometry Error relative to 2Mass catalog: 0.16” Dec Err (”) RA Err

NGC6791 r-band 120s J. Hartman et al. astro-ph/ 0504487