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The table is sorted by categories as follows:
| Program | Type | Status | Compatibility | Notes |
|---|---|---|---|---|
| Charting (top) | ||||
|
Copernicus
Ray Middleton 1.54 (28 Feb 2001) | Charting | Freeware (ex-commercial) |
 RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Almanac and chart program (mag<7) Versions for all OS variants Much extra information (eg sky diary, sun/moon times) Excellent Drawfile/sprite export Fine manual, but sky navigation could be easier |
|
NightSky
APDL/Clares 1.54 (28 Feb 2001) | Charting | Commercial (£14.90) |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Chart program (mag<7.55, 26,000 stars) Supports user annotations |
|
Orion
Ray Middleton 0.10 (15 Mar 1997) | Charting | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Generates a naked-eye map of the night sky Only suitable for latitudes around 54°N Sprite export for printing |
|
Orrery
Photodesk Ltd 2.00 | Charting | Commercial (£20.00) |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix unknown |
Mainly educational astronomical package Solar system orrery, star charts, ephemerides Independent review and resources Stefan Wuerthner has a (very old) demo |
|
ROCchart
Rick Hudson 2.25 (beta3) (27 Apr 2003) | Charting | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
The nearest RISC OS has to a professional charting program Under active development Large and extensible database Facilities for hardware control No export mechanism |
|
SkyGuide
Alan Senior 0.30 (11 Feb 1998) | Charting | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Basic chart program (mag<7, 9000 stars) Good navigation and time-stepping features Very fast, especially on a high-spec machine No export facilities |
|
SkyView
Nigel Hawkes 1.02 (26 Aug 1993) | Charting | PD |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) |
Basic naked-eye sky charts Awkward user interface |
|
Solun
David Rushall 0.50 (Oct 2001) | Charting | Charityware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Unfinished port of a Psion charting program Also available for the Osaris palmtop |
|
StarChart
David Pilling (port) 1.05 (17 Dec 2002) | Charting | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Port of a Unix program Draw export Small database |
|
Stargazer
Steve Ellwood 7.00 (7 May 1992) | Charting | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Simple sky charts (planets, 1300 stars, mag<5) Animation works well on a fast machine No export facilites Awkward user interface |
|
XEphem
Peter Naulls (port) 3.5.2-1 | Charting | GPL |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Experimental port of an interactive ephemeris Needs RiscX to work (very slow currently) Huge number of options and displays XEphem home page |
| Utility (top) | ||||
|
AstroBase
Rick Hudson 1.02 (9 Apr 2000) | Utility | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) |
Astronomical database server Integrates with ROCChart Can use Project Pluto, ADC, and user-defined databases |
|
MoonTool
Musus Umbra 3.27 (19 Aug 2003) | Utility | PD |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Desktop display of moon phase and other information Based on a Unix program Like all Musus' software, very well programmed |
|
Spotter
Simon Melhuish 1.10 (7 Dec 1993) | Utility | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) |
Calculates satellite visibility from NORAD two-line elements TLEs certainly need updating, but still useful Map options don't work on Iyonix |
| Time and date (top) | ||||
|
Calendar
Erik Groenhuis 0.02a (5 Jun 2003) | Time | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Converts dates between various calendar systems Module with SWI interface Currently handles Gregorian and Julian dates Hebrew, Islamic and French Revolution calendars to come |
|
Calendar
David Pilling 1.04 (14 Oct 2002) | Time | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Neat desktop calendar display Can save in Draw and text formats Copes correctly with the change to the Gregorian calendar in Sept 1752 |
|
Clocker
Richard Butler 1.27 (16 Jan 2002) | Time | GPL |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
World times on the desktop Sourcecode provided Needs 1280x1024 screen Requires Paladin and Chaucer fonts (or hack the Templates file) |
|
Daylight
David Taylor 2.20 (10 Apr 1992) | Time | Shareware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Displays sun/moon rise/set times for any location and date Also shows 'civil twilight' (when you can see a grey goose a mile away, apparently) UI showing its age, but usable |
|
JDay
Richard Butler (port) 1.20 (18 Aug 2000) | Time | PD |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) |
Command line Julian date tools Sourcecode provided Sourceforge page |
|
SClock
Simon Melhuish 1.10 (31 Aug 2000) | Time | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) | Displays local sidereal time and sun/moon positions |
|
WorldTime
PE Marshall 1.41 (1 Jan 1994) | Time | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Displays animated world map showing day/night regions |
| Imaging (top) | ||||
|
Widget5
Andrew Sellors 1.42 | Imaging | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Graphics processing package Can handle 16-bit per pixel greyscale images |
|
PDSview
Photodesk Ltd ? | Imaging | Commercial (deleted?) |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 unknown Iyonix unknown |
Viewing and basic processing of satellite images Understands some raw data formats (but not FITS) |
| Miscellaneous (top) | ||||
|
EarthMap
John Kortink 1.10 (23 May 2003) | Miscellaneous | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix (needs Aemulor) |
Geographical feature map of the Earth Drawfile export |
|
Planets
Jochen Lueg 3.44 (Jan 2002) | Miscellaneous | Freeware |
RISC OS 3.10 RPC only RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Three-body planetary system demonstration with various effects and options |
| Amusement (top) | ||||
|
ByJupiter
Jochen Lueg 2.30 (5 Mar 2003) | Amusement | Freeware |
RISC OS 3.10 20MB RPC only RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Animation of the Galileo probe's arrival at Jupiter |
|
Eclipse
Jochen Lueg 1.30 (3 Mar 2003) | Amusement | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Animation of the 1999 solar eclipse as seen from a weather satellite |
|
Eclipse99
Jochen Lueg 1.30 (3 Mar 2003) | Amusement | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Animation of the 2001 solar eclipse as seen from a weather satellite |
|
Lunation
Jochen Lueg 1.80 (3 Mar 2003) | Amusement | Freeware |
RISC OS 3.10 RPC only RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Animation of the Moon over a month, showing libration and size effects |
|
OneDay
Jochen Lueg 2.30 (3 Mar 2003) | Amusement | Freeware |
RISC OS 3.10 RPC only RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix | Animation of the Earth over a day as seen from a weather satellite |
|
XEarth
Matthew Bloch (port) 0.11 (27 Nov 2006) | Amusement | Freeware |
RISC OS 3.10 RISC OS 3.50 RISC OS 3.70 (SA) RISC OS 4 Iyonix |
Stunning real-time backdrops of the Earth on your desktop Port of a Unix program Many options, including animations |
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