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Choosing your

first telescope

Huygens Halleyand Harrison  (and Neptuneand Tycho)

by Mike Dryland


When is a planet not a planet?

by Eddie Yeadon


The Bureau des Longitudes in Paris

by Eddie Yeadon


Today’s Big Reflecting Telescopes

by Mike Dryland


Relative Values — two other significant anniversaries in 2005

by Eddie Yeadon.  Transcribed from f@nmm, October 2005


“The Other Six” — The World’s Greatest Refractors

by Mike Dryland


Did you know William Herschel, discoverer of the planet Uranus, was a fine musician and composer?  — CD review from Martin Male


The post of Astronomer Royal is 330 years old   — March 4, 1675


The Craig Telescope on Wandsworth Common by Greg Smye-Rumsby


Charles Parsons & Turbiniaa link between maritime history and astronomy

by Eddie Yeadon


James Bradley and the Dragon’s Head—280 years ago James Bradley (later third Astronomer Royal) began a series of observations that was to change astronomy

by Mike Dryland


John ‘Longitude’ Harrison is buried in the graveyard of Saint-John-at-Hampstead


Three Astronomers Royal are buried at St. Margaret’s Lee, just 30 minutes’ walk from the ROG


Short summaries on subjects of topical interest to the Society, and links to references for more information

If you could stand on Mars could you witness a Transit of Earth?  How long would you have to wait?


Portraits of John Flamsteed and his assistant Thomas Weston are to be seen on the ceiling of the Painted Hall at Greenwich.  Also, Tycho and Copernicus... 


Why doesn’t a GPS receiver held over the Prime Longitude at Greenwich show longitude 0˚ 00΄ 00˝ ?


William Herschel (1738 - 1822)

If Sir William Herschel is not the patron saint of amateur astronomers, he should be...


The Transit of Venus

In the late 17th/early 18th Century, measuring the size of the solar system accurately was one of the great challenges for science...

Eddie Yeadon’s Transit article from ‘Horizons’


The Royal Greenwich Observatory Herstmonceux

By the end of the 19th Century, Greenwich was rapidly becoming unsuitable for astronomy...

RGO (pdf)


The Gregorian Calendar (pdf)

September 2002 was the 250th anniversary of Britain’s adoption of the Gregorian Calendar...



Dec 31, 2008 P001