The LWS Time Estimator
Simple type lws-te. The time estimator will start up and
also tell you what files it finds in your current directory.
(The current path of the program for Solaris machines is
You will then type an identifier for your proposal file (anything will do).
The help is internal, to access, type help.
WARNING!!! -- Pay Attention to Units!!!
- The Line Flux Units in the LWS TIME ESTIMATOR are in W/m^2,
Continuum in Jy
- The Line Flux Units in the PGA are 10^-17 W/m^2,
Continuum in Jy
- And, just to confuse you further, most lines in the SWS
estimator etc., are in Jy.
- You have to add in your own overheads: 20 or 180 sec acquisition and
45 seconds addition setup time.
You have to correct your fluxes for the aperture efficiency!
See the April 10 1995 ESA Memo on Aperture Efficiencies
You will want to know this trick:
You can actually edit the file associated with the observations. (not the ".in" file).
WARNINGS - OVERHEADS
The time estimator does NOT incluce the ~180 seconds
necessary to acquire a new (non-concatenated) source. You
must take the output time of the lws-te and add 180 to it to
predict the Target Dedicated Time that includes source acquisition.
Otherwise, if the AOT is concatenated to a previous AOT, then you
must add only 20 seconds for starting this AOT. You must also aways
add an addition 45 seconds per AOT - for instrument set-up.
Overview of the LWS-TE program:
What it does:
The LWS-TE program manages the parameters for a LWS proposal,
and runs the time estimator programs (Latest Version, 3.3;
Ken King, Author) in
an interactive environment.
It allows you to interactively enter parameters, save results,
return to old runs, and change parameters. It allows you to
copy parameter sets into multiple copies, then change one
parameter in each copy to build up a set of similar runs.
How to use it:
First you will want to use the 'enter' command to enter the
of an AOT. After that you may enter additional AOT's manually, or
you may take advantage of the "update" and "copy" commands.
To see the parameters of an entered object, use the update command.
(and don't update anything)
Check out the help topic, "glossary"
Related topics found in the internal help of the program
lws01: overview of the "Medium Resolution Wavelength Range" AOT
lws02: overview of the "Medium Resolution Line Spectrum" AOT
lws03: overview of the "High Resolution Wavelength Range" AOT
lws04: overview of the "High Resolution Line Spectrum" AOT
new - type in parameters for one AOT from scratch
update - edit parameters of an aot
main - finish an update and rerun to estimate the time
copy - duplicate an aot
help - get information on a topic
quit - exit the program and update proposal file