From: oler@rho.uleth.ca (Cary Oler)
Subject: BULLETIN: Dynamic Auroral Oval Simulation Software Update
Organization: University of Lethbridge
Date: 22 Jan 93 22:37:52 GMT

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               **       SOFTWARE RELEASE ANNOUNCEMENT       **
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   --     NEW SPRING SPECIAL RATES ON THE AURORA SIMULATION SOFTWARE    --
   -- ALL HAM OPERATORS WITH VALID CALL-SIGNS NOW QUALIFY FOR DISCOUNTS --

     The Solar Terrestrial Dispatch is pleased to announce the release of an
Auroral Activity Predictions and Dynamic Auroral Oval Simulator software
package.  This software has been well over a year in development.

     With this software you can:

        - Determine whether aurorae might be observed from your location.
        - Determine the potential magnitude of auroral activity.
        - See whether HF radio signal paths cross into the auroral zone where
          significant signal degradation occurs.
        - Superimpose any number of great circle paths on the maps.
        - Determine the best azimuth for radio transmissions to avoid the
          instabilities of the auroral zone.
        - Graphically draw the position of both the northern and southern
          auroral ovals with estimated contours illustrating what areas of
          the Earth are most likely to observe low, moderate and/or high
          levels of auroral activity.
        - Determine where aurorae can be observed directly overhead.
        - Learn the behavior of the auroral oval.
        - Predict possible levels of auroral activity in the future, and
          determine whether the future activity may be observed from your
          location.
        - Determine the equatorward expansion of the auroral oval and how it
          might affect radio signal paths or auroral visibility.
        - Simulate the visibility of auroral activity from any ground-level
          location on the Earth, and for any date and any time.
        - Determine the characteristics, location, and magnitude of auroral
          activity for almost any historic period of time or any predicted
          time in the future.
        - Plot the locations (ground-stations) where aurorae were sighted for
          any date from September 1991 to the present, including the major
          auroral storm period of late March of 1991.
        - Superimpose any number of great circle paths on the maps the
          software produces to visually determine their proximity to the
          auroral oval for any date and any time (highly valuable for HAM
          operators seeking the best possible radio signal paths).
        - Superimpose on any of the maps the sunrise/sunset grayline
          terminator.
        - Much More . . .

     This software is based on scientific models, yet does not require any
technical knowledge or education to operate.  It is ideal for students,
teachers, amateur and/or professional astronomers, amateur and/or
professional radio operators, the media, and any other individual or group of
individuals interested in predicting, observing, or analyzing auroral
activity.

     It requires an IBM or compatible MSDOS computer system with at least
256K of memory and VGA graphics capabilities.  The software will use (and
benefit from) a math coprocessor if your system is so equipped.

     Pricing information follows below.  Note that all prices are in either
Canadian OR U.S. funds.  U.S. cheques or money orders are accepted:

           Spring Special Price: $129.95   <--  Regular price is $149.95.
 Amateur Astronomy or HAM Ops. : $ 99.95   <--  23 % discount (see below)
     Education/Internet Special: $ 94.95   <--  27 % discount (see below)
Persons Registered with the STD: $ 64.95   <--  50 % discount (see below)

       (SPECIFY WHETHER YOUR REQUIRE 5.25" OR 3.5" HIGH-DENSITY DISKS)
                 (Canadian Residents please account for GST)
                  (All customers add $5.00 dollars for S/H)
                   (Please allow 2 to 5 weeks for delivery)

             (ACT NOW WHILE THE INTRODUCTORY PRICES STILL APPLY)

Remit all cheques or money orders to the "Solar Terrestrial Dispatch" at the
following address:

                          Solar Terrestrial Dispatch
                          P.O. Box 357
                          Stirling, Alberta, Canada
                          T0K 2E0

     People registered with us and seeking the 50% discount price must
include their valid registration number with their order.  If you have lost
your registration number, contact us at: (403) 756-2386.

     The "Education/Internet Special" only applies to teachers of High
Schools, Colleges or Universities, OR to those who have valid electronic
INTERNET e-mail addresses.  If you are an educator, you must include your
educational institutions name and a phone number at that institution where
you can be reached.  For those who have valid INTERNET e-mail addresses,
state your e-mail address(es) to qualify for this 27% discount.

     If you are a member of a local Amateur Astronomy Club or Amateur Radio
Club, OR, if you have a valid amateur radio license, you qualify for the 23%
discount.  Simply include the name and address (or a phone number for
confirmation if an address does not exist) to your club, or your amateur
radio call-sign to qualify for this discount.  Bulk purchases of the software
by Clubs for their members is also possible.  Call us for details at (403)
756-2386.

     All others who do not fall into one of the above categories must pay the
Spring Special rate of $129.95 in either Canadian or U.S. funds.

     All persons who purchase this software are automatically registered with
us and therefore qualify for all significant discounts on future software
releases or revisions for as long as their registrations remain valid.

     Prices are subject to change without notice.  These Spring Special rates
will expire on 31 May, 1993.


**  End of Bulletin  **
Newsgroups: sci.astro