Ten screens of interactive and animated displays showing Halley's comet.
|Cover Art Language:||English|
|Machine Compatibility:||Spectrum 48K, Spectrum 128K|
|Release:||Professionally released on Cassette|
|Available For:||BBC B/B+/Master 128 & Spectrum 48K|
|Compatible Emulators:||ZXSpin (PC (Windows))|
Nutria (PC (MS-DOS))
|Original Release Date:||24th September 1985|
|Original Release Price:||£6.95|
|Market Valuation:||£2.50 (How Is This Calculated?)|
|Box Type:||Cassette Single Plastic Clear|
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My only serious gripe is that not enough printed information came with the program. Read Review
A good try, but not really a program for those with no starting knowledge. Read Review
Halley's Comet only visits our part of the Solar System every 76 years so don't miss this once-in-a-lifetime opportunity to see the famous Comet!
This unique program provides a comprehensive and practical guide to the forthcoming apparition covering the period from January 1984 to December 1986 - you don't need to be an astronomer to enjoy it.
The program is user-friendly with ten screens of interactive or animated displays via one-touch key instructions. All the displays can be "COPY"ed.
The comet is plotted onto a machine code starmap or your "local horizon" for any chosen date/time/place. The position of the Sun and Moon are shown and the "sky" is coloured according to twilight/moonlight:
|*cyan||: daytime||: Sun above the horizon!|
|*magenta||: twilight||: Sun 0 deg to -15 deg alt.|
|*yellow||: bright moonlight||: Moon 7 to 23 days old.|
|blue||: crescent moon||: Moon >23 & <7 days old.|
|black||: night-time||: No twilight/moonlight.|
Flashing arrows warn if these* could spoil the view. The comet's coordinates in RA/Dec (19500 epoch) for use with starmaps, altitude/azimuth in the sky, magnitude and range from Earth and Sun are included.
Moon's Phase/Age/Position is accurate to within one day; adequate to judge moonlight conditions. The phase is named: New Moon, Evening (crescent), Gibbous, Full Moon or Morning (crescent) as appropriate.
Date: INPUT range (for menu options 6, 7 & 8)
Date: 1984 Jan 1 to 1986 Dec 31
Time: 0-23hr; 0-59m (=GMT+1hr per 15 deg E long: -W)
Lat: 0 deg to +90 deg (London, England = 51 deg N)
The following utilities are also available to allow you to edit the supplied screens of this game:
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