                     The Earth Centered Universe (ECU)
                           for MS-Windows 3.x

                  A Shareware Sky Visualization Program
                         for Amateur Astronomers

                              Version 1.5
                          Released January 1994

                             Nova Astronomics
                              (David J. Lane)
                           4-26 Randall Avenue
                               PO Box 31013
                           Halifax, Nova Scotia
                             Canada  B3K 5T9

                   Voice: (902) 443-5989 (evenings GMT-4)
                              CIS: 71601,247
                    Internet: dlane@hercules.stmarys.ca

                      ECU is also available in French

      Available on Compuserve in Lib 7 or ASTROFORUM as ECUSHA.EXE
         Available on Internet by FTP at "hercules.stmarys.ca" 
                       as "/pub/ecu/ecushare.exe"

	ECU V1.5 is a shareware Sky Visualization Program for Microsoft 
 Windows 3.x called "The Earth Centered Universe".  It is capable of 
 simulating many of the features of the Earth's sky.  You only need to 
 enter your geographic location and the time and the local sky is
 simulated on the screen in a colourful display.  This includes, but 
 is not  limited to the stars, planets, Sun, Moon, comets, asteroids, and
 "deep sky" objects.  Constellation, Constellation boundary, coordinate 
 grid, ecliptic, and local horizon lines are also displayed.  It prints 
 high quality star charts to any Windows-compatible printer and also controls
 modern computerized telescopes.

	ECU is designed as an observing tool for the observing amateur 
 astronomer, but is equally useful to the "armchair" astronomer or 
 other interested person interested in the night sky.

	Some of the features of ECU are listed below:

       - fast compared to many commercial packages - mostly integer math
         so math processor is not needed, but is supported to improve
         speed of solar system calculations, etc.
       - colourful display - colours of all screen elements controllable
	 by user with scroll bars
       - high quality customizable star charts can be printed on any Windows
	 compatible printer or plotter
       - continuous display of LMT, UTC, latitude and longitude, RA/DEC, 
	 AZ/ALT, field size, and star mag limit
       - the display of Siderial and Julian Date are available
       - databases: Yale star catalogue to 6.5 magnitude
		    SAO star catalogue to 9.5 magnitude (optional)
                    SAC deep sky database (over 10,000 objects)
                    planets, Sun, Moon, comets, and asteroids
       - very easy to use - zoom box, center image, zoom in/out, etc. all
         done with the mouse.  Scroll bars for RA and DEC or Alt/Az.  Hot
	 keys and buttons for common functions
       - click on an object and an information box pops up.  All objects 
	 give RA, Dec, azimulh, altitude, rise and set times, and magnitude.
 	 Planets/Sun/Moon give distance (AU or km), angular size (" or '), 
	 and phase (or age).  Comets and asteroids give distance to the Sun 
	 and the Earth in AU.  Yale stars give Yale number, HD number, SAO 
	 number, Flamsteed/Bayer designation, Spectral type, and proper 
	 motion.  SAO stars give SAO number, and spectral type.  Deep sky 
	 object provide a varying amount of info but usually provide the 
	 name (an other name), Dreyer description, size, classification, etc.
	 Their coordinates can be precessed to the current date/time.
       - the user can display a GIF/PCX/BMP or TIF image of the object, 
	 if one exists through the use of an external viewer.  No images are
	 provided with ECU.
       - measure angular separation on the sky with the mouse.  It also 
	 provides the difference in RA and Dec.  
       - load and save all settings to named configuration files
       - load and save comet and asteroid elements to separate ASCII files	
       - undo last operation
       - time set as LMT, UTC, or system clock (daylight savings flag, too.)
       - time format as 24 hour or am/pm
       - observer's location entered by lat/long or pick list of preprogrammed
         cities (add your own, too)
       - control the effects of observer's parallax, nutation, precession, light travel
         time, aberration, and atmospheric refraction
       - show sky as white on black background or black on white background, 
         or in full colour 
       - also supported is a "red" mode to save your night vision if used in an
	 observatory
       - set magnitude limits of deep sky and stars (with scroll bars)
       - select type of deep sky objects displayed (with check boxes)
       - displays horizon line, ecliptic line, ra/dec grid (fine and coarse),
         zenith marker, constellation lines, IAU constellation boundary lines,
	 labels for bright stars, constellations, messiers, coordinate grid, etc.
       - Two circles and one rectangle of a programmable angular size 
	 can be draw at the centre of the sky display that are intended
	 to represent field of view of your main telescope, finder scope,
	 and camera respectively.
       - center on - RA/DEC
		   - Azim/Alt
		   - bright stars
                   - constellations
                   - messiers
                   - points on horizon (north, south, etc.)
                   - solar system objects
                   - search the database and center on the object found
       - animation mode - time increments in steps from 1 minute to four years or a 
			  user selected arbitrary increment
                        - set direction either forward or reverse
                        - lock to Sun, Moon, Planet, alt/az or ra/dec
                        - trails of objects supported
       - extensive support is provided for the Meade LX200 (and LXD) 
	 telescope series.  This includes a moving cross hair on the 
	 screen, a real-time coordinate readout, and hand controller 
	 support.  It also allows the scope to be "slewed" to an selected 
	 object
       - extensive support is provided for the JMI SGT-MAX (and others)
	 digital setting circles.  This includes a moving cross hair on the 
	 screen and a real-time coordinate readout.  It also aids the user in
	 finding a selected object
       - prints high quality star charts on any Windows-compatible printer
	 with customized titles, programmable borders, scale factors for 
         deep sky and stellar symbols, etc.
       - A dialog box to display the rise/set times of the sun and moon
 	 on the current day is provided.  It also shows the times of civil, 
	 nautical, and astronomical twilight.
       - and much, much more!

       - system requirements:  386/486 100% PC compatible
			       386DX recommended	
                               Math co-processor beneficial
                               MS-Windows 3.x (standard or enhanced mode)
                               EGA/VGA or better color screen
                               min 700kbytes free memory (1 meg recommended) from 
                                 within MS-Windows
                               80x87 (or 486DX) recommended but not required
                               Mouse
			       Windows compatible printer supported

       - Distributed Name: ECUSHARE.EXE (ECUSHA.EXE on Compuserve)
       - Shareware fee - $35.00US basic
                       - $20.00US for additional database of about 250,000 stars
		       - $15.00US for upgrades		
       - Customer Support is provided by free e-mail, telephone, or mail support
