Operator`s manual

1.6 Output Data Files
The output data file (yydddhh.rad) is an ASCII text file. Data reduction on the raw output can be
done with a spreadsheet program like MS Excel
with some effort. The development of
spreadsheet MACROS to reduce the data are desirable for large files and long integrations. Future
releases or updates of the SRT software could also output certain observations in formats for
other data reduction methods.
Comment lines:
Start with an asterisk and list the STATION LAT and LONG(E/W) on the first line.
* STATION LAT= 42.50 DEG LONGW= 71.50
When the output data is the result of an input command file, the next comment line could
be the listing of the first command line in the input file.
* filename.cmd: line 1 : command
Calibration results will also follow an asterisk:
* tsys 215 calcons 0.98 trecvr 195 tload 300 tspill 20
Data lines:
Start with a time mark (yyyy:ddd:hh:mm:ss), then list: azimuth, elevation, offsets, center
frequency, point spacing and data points.
2005:148:14:32:44 104.5 16.0 0.0 0.0 1419.75 0.00781250 1 64 …
Data points listed in the .rad file are multiplied by the calibration constant produced prior
to the data taking.
The command file test.cmd starts a short calibration and hydrogen spectral-line run on the CasA.
The input file listing and output file, 0514814.rad, examples are listed below:
INPUT: test.cmd
: record
: azel 125 45
: freq 1419
: calibrate
: Cas
: freq 1420.4 4
:20
: roff