Solar Eclipse in NW Europe - 20 March 2015 - 02 March 2015

There will be a solar eclipse on 20th March, visible from the UK and many other parts of North West Europe. Unfortunately here in the UK we won't be able to see a full eclipse, but we will see the moon pass in front of the sun. Follow the link for more information.

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US Army rediscovers celestial navigation - 20 October 2014

After GPS totally displaced most other forms of navigation, there is a growing awareness that GPS (and other systems like GLONASS, Galileo, Beidou etc) is very susceptible to jamming and other forms of interference. So the US army are turning the clock back, to include celestial navigation in their laser targetting systems.

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Hoegh guards against GPS failure with WinAstro - 15 May 2014

Hoegh Fleet Services, who manage a fleet of over 50 car carrier ships, have decided to guard against GPS failure on their vessels by getting a fleet wide licence for WinAstro. Unlike GPS and other GNSS systems, astro navigation cannot be jammed, spoofed, or suffer from systems or satellite failures! Whilst e-LORAN will provide a much needed alternative means of navigation for coastal waters, it will be a considerable time before it offers widespread coverage.

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Article on Yacht Navigation by Sextant - 15 May 2014

People may be interested in this blog article reviewing a book on navigating in the Victoria (BC) to Maui (Hawaii) using just a sextant for navigation (back in 1982, predating GPS). It also comes up with other useful comments on navigating by the stars.

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New Contact Details - 06 January 2014

With the European Space Agency having provided us with office space at Harwell for our


project, we have closed the old office at the Portsmouth Technopole - we can only fill one office! E-mails remain unchanged, but the phone number has changed to +44 (0)7985 927376.

23rd Greatest Breakthrough Since the Wheel - 06 January 2014

The Atlantic magazine has made a list of the 50 greatest breakthroughs since the wheel in its Octover 2013 issue. The sextant came in at number 23, with the sailboat at 40.

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Web Site - 16 December 2013

Apologies for the web site having been down the last few weeks. We had some server problems, and pressures of work meant we decided to fix things in a major server upgrade, without doing a short term fix. The upgrade was finished last week, and all is working well again.

Sextant navigation in Falklands War aircraft - 01 April 2012

Back in 1982 we English had a spat with the Argentinians over the Falklands (or Malvinas) Islands - it doesn't seem like 30 years ago.

One of the missions flown by the RAF was sending a Vulcan bomber 8,000 miles to bomb an Argentinian airfield - navigated by sextant.

Channel 4's film on this, Falkland's Most Daring Raid, can be viewed online. It is also reviewed by the Daily Mirror.

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New Dava Sobel book on Copernicus - 28 September 2011

There's a new book out on Copernicus, by Dava Sobel, who wrote the best seller Longitude. I haven't had a chance to read it yet, but if Longitude is anything to go by it'll probably be a good read, but lacking in depth for me. I preferred Umberto Eco's "The Island of the Day Before" to Longitude. Anyway, there's a review of her book in

The Economist



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Inexpensive training sextants - 06 May 2011

Many people want an inexpensive sextant for practicing ashore - either to learn astro navigation without making a large investment in a quality sextant, or to keep in practice when the boat's sextant is not around. We can now offer this with the AstroMedia sextant, which costs just £15.75, and is remarkably good quality and accurate for this price.

We will also be adding additional sextants to our product range in the near future, from Astra, Freiberger and others.

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GPS jamming in US by Lightsquared - 02 February 2011

Lightsquared, who are developing a US wireless data network, have been granted permission to use frequencies that are used by GPS, even though t is proven that thios will stop GPS receivers from operating near their transmitters. Luckily, sextants are not affected!


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WinAstro reviewed by Practical Boat Owner - 25 January 2011

Practical Boat Owner has reviewed WinAstro and given it a very good *** rating. You can read the review here on the web site. 

Mike Richey passed away - 25 January 2011

Mike Richey, expert on astro navigation and famous for his single-handed races across the Atlantic in the 26 foot junk rigged boat "Jester", passed away on 26th December at the age of 92. He was also one of the founders of the Royal Institute of Navigation, and served an apprenticeship with the sculptor and typrographer Eric Gill.
Read his obituary here.

WinAstro reviewed by Seil magazine - 30 July 2010

The Norwegian magazine Seil has reviewed WinAstro. The report, written by Terje Bølstad, is available for reading on Seil's web site - he has been an enthusiastic user of WinAstro for many years..

WinAstro now with Planetariom Software - 30 July 2010

WinAstro is now supplied with a separate planetarium program, Stellarium, that lets you see the sky at night from your location, and identify the stars, planets and constellations. This helps you identify the body you want to take a sight on, and more generally to identify all the objects in the sky - a great way to make those night watches more interesting!

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