Dec 072017
ECU is a Sky Visualization Program capable of simulating many of the phenomenon of the country night sky.
File ECUSHARE.ZIP from The Programmer’s Corner in
Category Science and Education
ECU is a Sky Visualization Program capable of simulating many of the phenomenon of the country night sky.
File Name File Size Zip Size Zip Type
BOUNDS.ECU 28064 14885 deflated
CONS.ECU 4260 3816 deflated
ECU.CFG 2404 224 deflated
ECU.EXE 423424 137705 deflated
ECU.TXT 5855 2375 deflated
LABELS.ECU 8250 2881 deflated
LOCATION.ECU 2097 1217 deflated
MANUAL.WRI 109312 33053 deflated
REGISTER.WRI 4096 1589 deflated
SAC1.ECU 62202 50925 deflated
VENDOR.TXT 9091 3525 deflated
YBSC1.ECU 45550 44308 deflated

Download File ECUSHARE.ZIP Here

Contents of the ECU.TXT file

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

Shareware Sky Visualization Program

Version 1.4A
Released April 1993

David J. Lane
4-26 Randall Avenue
Halifax, Nova Scotia
Canada B3M 1W2

Voice: (902) 443-5989 (evenings AST)
CIS: 71601,247
Internet: [email protected]

ECU V1.4 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, and "deep sky" objects.
Constellation, coordinate grid, ecliptic, and local horizon lines are
also displayed. 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 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
- 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, and Comets
- 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 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. The coordinates
can be precessed to the current date/time.
- the user can display a GIF picture of the object, if one exists.
None are provided with ECU. Some may become available at a small
- measure angular separation on the sky with the mouse
- load and save all settings to named configuration 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
- 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.
- 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
- and much, much more!

- system requirements: 286/386/486 100% PC compatible
386DX recommended
Math co-processor beneficial
MS-Windows 3.x (standard or enhanced mode)
EGA/VGA or better color screen
min 600kbytes free memory (1 meg recommended) from
within MS-Windows
80x87 (or 486DX) recommended but not required
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

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