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16-10-200716-10-2007
CI
Lamp Scan on Slit #1
CI is used to perform a wavelength scan from 286.5 nm to 366 nm on one of the two internal
test lamps. Filter Wheels are set to positions 1 and 0, and the Iris is open. The increment of
the scan is user selectable with choices of 0.1, 0.2, or 0.5nm. Data can be compared with
the data contained in the Final Test Record, and is stored in the file CIJJJYY.NNN in the
\BDATA directory. A typical command sequence might be B1W1CI, where B1 turns on the
HG lamp, W1 produces a 5 minute lamp warm-up delay, and CI executes the wavelength
scan.
See Appendix A for the format of the CIJJJYY.NNN file.
The CI command requires operator input.
CO
Comments
CO allows the operator to enter a comment (up to 75 characters) into the Brewer data file.
This command is useful to record information about a measurement, current weather, sky
conditions, and so on.
This command requires operator input.
CS
Command Sequence
CS is similar to a command line entry at the cm->__ prompt. The operator may enter a
sequence of commands to be executed, followed by an integer which indicates the number of
times the sequence is to be repeated.
This command requires operator input.
CY
Slitmask Cycles
The default value for slitmask cycling for most observations is 20. The CY command may be
used to increase or decrease this number if better statistics, or a faster measurement (with
degraded statistics) is desired.
This command requires operator input.
CZ
Custom Scan
CZ allows the operator to define a custom scan. Sources may be one of the internal lamps,
the UV port, or the quartz window. The scan may be over any wavelength range within the
Brewer's scan limits, have any wavelength increment, and use any filterwheel combination.
This command requires operator input. Data is stored in a CZJJJYY.nnn file. See also
Appendix A.
DA
Date Set
The Brewer ephemeris requires GMT (both date and time) for proper operation. Under
normal, uninterrupted operation, the computer, and Brewer, dates will change at 00:00:00
UT, and are displayed on the monitor screen. Under some conditions (if power is off at
00:00:00 UT), the date may not update, and may have to be corrected manually. The pointing
system updates automatically when a new date is entered.
This command requires operator input.
DD
Print Data Directory
DD causes a file listing of the Brewer data directory to be sent to the printer. The printer must
have been turned on with the PN command.
DDP Print Data Directory
DDP causes a file listing of the Brewer program directory to be routed to the printer. The
printer must have been turned on with the PN command.
DDS Print Data Directory to the screen
DDS causes a file listing of the Brewer data directory to be routed to the monitor screen.
MKIV OPERATOR'S MANUAL
4. BREWER COMMANDS
35
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