Products (22)
| Title | Company |
|---|---|
| Astro Map & Conversion 16K. | Pegasus Micro Systems |
| Astro-Utilities Calculates Julian date, sidereal time; rise/set times; altitude/azimuth; procession of celestial objects; and more. 16K. | Robert C. Moler |
| Astronomer’s Guide Contains astromap, giving access to information on 800 stars and other celestial objects. 16K. | Sinclair Research Ltd. |
| Astronomer’s Guide Unreleased Timex Computer Corporation version of the Sinclair Research tape of the same name. | Timex Computer Corporation |
| Astronomical Software 1 Menu-driven program providing date, time and coordinate conversions. 64K. | Scientific Computing |
| Astronomy Compute positions of the sun, moon and planets for any date. Find dates and times of moon phases, solar and... | Imre Auersbacher |
| Astronomy Displays all 88 constellations. 16K | Mattsoft Games |
| Celestial Locator Provides the amateur astronomer with AZ/ALT positions for any given celestial source. Radio astronomers can rapidly adjust antennas with the... | Z-West |
| Constellation Turn your ZX81 into a telescope. Produces a simulation of the night sky as seen from any position on Earth... | Bug-Byte Software |
| Ephemeris V Planet finder. Enter date, time, latitude and longitude. Program will calculate azimuth and altitude, right ascension and declination. Provides graphic... | Ephemeris V |
| Galaxy Draws normal and barred spiral galaxies from input parameters. Galaxies may have variable orientation from face-on to edge-on. Choice of... | Robert C. Moler |
| Lunar Cycle Approximation for determining the lunar phase for any day this century; accuracy usually within 1 day; rarely over 3 days.... | Stephen Zachev |
| Moontracker Computes position of moon, rising and setting, for any location, any time. 16K. | Kamel Technology |
| Orbit Astronomical demonstration program for educators. Draws elliptical orbit shapes based on eccentricity. Also calculates and produces animated display of orbital... | Robert C. Moler |
| Planet Finder Planet Finder is a collection of astronomical images and information. It is a graphically interesting, cleverly designed visual database of... | |
| Planetfinder Computes the right ascension and declination, constellation planet is in v brightness, distance from earth, angular diameter, and phase. For... | Kamel Technology |
| Planets Calculates and displays positions of the planets around the sun for a date or series of dates. Can plot planet... | Robert C. Moler |
| Print-Planets Uses the high resolution capabilities of the ZX printer to plot the positions of the planets in their orbits. Menu... | Robert C. Moler |
| Stars A simple program that randomly scatters a group of characters on the screen to produce interesting pictures. Using a “*”... | Systems and Solutions, Ltd. |
| Sunrise/Sunset Complete months or years of tables for sunrise/sunset times every 3 days for any location and time zone. | I. M. S. Enterprises |
| Suntracker Computes position of sun, sunrise, sunset for any location, any time. 16K. | Kamel Technology |
| Telescope Design Asks for desired objective diameter and f/ratio, inputs physical dimensions and optical data for a Newtonian reflector optical assembly. Saves... | Bob Woish |
Downloadable Files (13)
| Title | Type | Company | Download |
|---|---|---|---|
| Astronomy | Program | Download | |
| Astronomy Conversions | Program | ||
| Constellations | Program | ||
| Halley’s Comet | Program | Download | |
| M*5 | Program | ||
| Moon Phase Calculator | Program | ||
| Moonphase Astrology | Program | ||
| Orbiter | Program | ||
| Planet Ephemeris 2068 | Program | ||
| Planet Finder | Program | Download | |
| Planet Finder | Program | Download | |
| Skyplot | Program | ||
| Solar/Lunar Eclipses | Program |