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- AstroCalc I
- A Shareware Program
-
- Copyright (C) 1993, Hesperus & Co.
- All Rights Reserved
-
- Hesperus & Co.
- PO Box 8216
- Pittsburgh PA 15217
-
-
- Following is a basic description on how to use the program. Registered
- users will receive an expanded printed manual that provides information on
- the scientific theories involved (with references), a background on the
- history of astronomical calculations and further explanations of the
- astronomical terms used. In addition, registered users have access to
- technical support and information on program upgrades and other related
- software.
-
-
- AstroCalc I calculates astronomical data for the Sun, Moon and planets and
- the various forms of time used in astronomy. By inputting date, time and
- geographical location the conditions of the heavenly bodies are calculated.
- The program is useful to plan observing sessions, to investigate past,
- present and future sky configurations and in general to provide easily
- accessible astronomical information.
-
- Getting started
-
- The program runs under the DOS (2.1 or later) environment. To install:
-
- Harddisk Use - Highly recommended for best speed performance.
-
- 1. Select or create a subdirectory for the program on your hard drive, for
- example, C:\ACALC1. Do this by changing to your C: drive (Enter C: at A> or
- B> , etc.) and have the C> prompt showing. Then use CD\ (Enter) to go
- to the root directory. Now make the new directory by using the DOS command
- MD\ACALC1 (Enter). Then change to this directory using CD\ACALC1
- (Enter).
-
- 2. Copy the files from the program disk. Place the program disk in the A:
- or B: drive and use the command COPY A:*.* (Enter). ( or COPY B:*.*
- if using the B: drive). The files are now installed on the hard drive.
-
- 3. Now start and run the program by entering: ACALC1 The program will now
- start up. Follow the prompts on screen.
-
- Floppy Disk Use - If harddisk is not available.
-
- 3.5'' or 5.25'' Disk - Place disk in A: or B: drive and change to that
- drive (use A: or B: and Enter). Now start and run the program by entering:
- ACALC1
-
-
- Using the Program
-
- Once the program is running you can input data and start getting results.
-
- On the Enter Data screen you enter the date, time, location and time zone.
- Date, time and zone, and location are automatically saved to re-use.
- ALT + X lets you exit the program to DOS.
-
- The time zones are the standard US time zones: Eastern Standard Time (EST),
- Eastern Daylight Time (EDT) and so on through Central, Mountain and Pacific
- times. The other time option is Greenwich Mean Time (GMT) or Universal Time
- (UT) which is the world time standard , deriving from the 0 degree line of
- longitude that passes through the observatory at Greenwich in the east of
- London, England.
-
- The time is input as 24 hour time, where for example, 2:00 PM is equal to
- 14:00 hours.
-
- The latitude and longitude are input as decimal values such as 42.85. The
- values of latitude range from 0 (zero) at the equator to up to plus 90
- degrees north of the equator (+90, the north pole) or down to minus 90
- degrees south of the equator (-90, the south pole). For longitudes the
- values range from 0 (zero) at Greenwich, England up to +180 degrees going
- west and down to -180 degrees going east. For example, all of the USA has
- plus longitudes and all of China has minus longitudes.
-
- When entering plus latitudes or longitudes the + sign is optional. The -
- sign must be used.
-
- When ready to gets results use ALT + C for calculations.
-
- The Data Selection screen now gives you the options for which bodies you
- want. You can choose the Sun, Moon or any planet or all planets
- or all bodies (Sun, Moon and all planets).
-
- Then you will see up to 18 screens of information covering the Sun, Moon
- and helio- and geocentric data for Mercury, Venus, Mars, Jupiter, Saturn,
- Uranus, Neptune and Pluto. Notice that the Sun data screen also has some
- information related to the Earth: the Sun/Earth distance and the Earth's
- eccentricity of orbit.
-
- After all data has been displayed, you will be able to run another case or
- exit the program. Press A for another case, or X to exit.
-
- We hope you find the program useful. If you continue to use the program you
- are required to register your use of the program (and you will receive the
- expanded manual, technical support and access to program upgrades). Thank
- you for your support!
-
-