CFHT operating manual - Homepage Usask

CFHT Observatory Manual - Observatory (Sec.3) http://www.cfht.hawaii.edu/Instruments/ObservatoryManual/CFH...
comfortable furniture, and a kitchenette. This facility
is for use by observers, staff, and guests for short rest periods during the day or
night.
Observers are requested to leave the kitchen in good order, especially during
weekends when no cleaning staff is on duty.
On the third floor there is one small bedroom and a washroom for use by
personnel during day or night. These bedrooms are
humidified but not pressurized. Individuals should remember that sleeping at
4200 m is very difficult, and not always
recommended, unless one is fully acclimatized.
Weather Station
A weather station is mounted on a tower adjacent to the dome. Readouts of the
weather station instruments are found directly
above the TV monitors at the telescope control console. A chart recorder view is
also availible, on the Telescope Status monitor
of the Telescope Control System (TCS). The instrument levels are shown in
colored traces. Several FITS keywords of
potentially useful weather data are added to the FITS header of each image file.
Compressed Air
Seven-bar filtered and dried compressed air is available for use by Observers at
the following locations:
instrument labs
upper coudé slit room
telescope Cassegrain focus
optics labs (including the LAMA room)
Glycol Cooling System (this section needs updating and inclusion of the
MegaPrime cooling system)
Because of the expense of trucked water, a recirculating cooling system has
been installed for all cooling purposes by
observers.
The cooling points are equipped with a valved supply line and a drain and are
installed in the following locations:
coudé rooms and coudé auxiliary rooms
infrared laboratory
instrumentation preparation room
Coolant characteristics are as follows:
maximum flow: 40 liters/minute
maximum pressure: 5 bars
incoming temperature: 10oC (adjustable)
Dry Nitrogen
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