MDM Observatory's 8K CCD array project based at Columbia Astrophysics Laboratory:
Dewar & Cryostat Performance e-mail: arlin@astro.columbia.edu

Telephone: (212) 854-7899



CRYOSTAT PERFORMANCE:

Cold straps will be tuned to achieve isothermal focal plane (to within 1 degree C) with an operating range of -130C to -65C. Cryostat leak checked and gauge to 0.1 micro-Torr.


DEWAR PERFORMANCE:

Twenty-four hour hold time for 8K mosaic at -100C, at any orientation.