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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.

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Mmt megacam

MMT Megacam

Brian McLeod

Smithsonian Astrophysical Observatory


Basic parameters
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



CCD SIMULATOR TEST BOX

SCOPECONNECTIONS


300mmx300mm

Sloan-r filter

by Sagem


Megacam performance
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
Image Quality

FWHM

(ARCSEC)

PIXEL POSITION


Astrometry
Astrometry

Error relative to 2Mass catalog: 0.16”

Dec

Err

(”)

RA

Err

(”)

Dec

RA


NGC6791

r-band 120s

J. Hartman

et al.

astro-ph/

0504487


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