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The Flamsteed is an amateur astronomy society at the Royal Observatory and National Maritime Museum in Greenwich, London SE10. It has around 400 members who represent the full range of interests and experience in astronomy. Many are beginners. It is named after the first Astronomer Royal, John Flamsteed.

The Society was founded in 1999, and is part of the membership organisation of Royal Museums Greenwich.

Our lecture meetings are held once a month between September/October and May/June, usually on a Monday evening, in the lecture theatre of the National Maritime Museum, or in the Peter Harrison Planetarium at the Royal Observatory Greenwich (ROG). The Society regularly holds observing evenings using members’ own telescopes.  In addition the Society stages viewing sessions with the ROG’s Great Equatorial Telescope, the largest of its kind in the UK, and seventh largest in the world.

We are an affiliated society of the British Astronomical Association and members of The Federation of Astronomical Societies.

On Saturday, 18th January 2020, we gathered on Blackheath Common looking thoughtfully up at what the night sky was offering. Members with telescopes entertained the public with views into the cosmos, trying to dodge the cloud patches that skimmed past, and as the evening rolled on, whimpers could be heard as the cold air was […]

So after being away for almost two years… Slingshot around the sun, charge the flux capacitor or use the force – whatever your favourite film is, there’s no way round it: we’re baaaack in the lecture theatre! And boldly doing what no other astronomy society has done before (probably): we’re only zooming at the same […]

Andy

Planning a surprise event is never an easy task, especially when working remotely with 13 people all trying not to let it slip in the middle of meetings, chat forums, emails or phone calls. Then there is also the coordination for the event in sorting venue, timing, people and presents. With challenges abounding, this is […]

A short review of what to see in the night sky in May 2020: Light phases at sunrise and sunset Sky conditions during lockdown Starlink comments Messier 3 – Globular Cluster Markarian’s Chain Mercury Eta Aquarids meteor shower “Supermoon” Presented by Mike Meynell

A short review of what to see in the night sky in April 2020: Comet C/2019 Y4 (ATLAS) Lyrid Meteor Shower Venus and the Crescent Moon Phases of Venus Also, a brief review of the best astronomy planetarium apps.

Dear Members, Notice is hereby given of our 23rd Annual General Meeting which will be held on Monday 12th September 2022 at 7pm in the Lecture Theatre of the National Maritime Museum. The AGM + Talk will also be streamed live via Zoom to those who cannot make it in person. ———————————————————————————————————————————– Everything that has a beginning must also have an end, and the Universe appears to […]

Archaeoastronomy grew out of interpretations of Stonehenge and other British prehistoric monuments in the 1960s as “ancient observatories” — ideas that generated a huge wave of popular interest but also proved highly controversial among academics, pitting astronomers against archaeologists as they reached fundamentally different conclusions on the basis of the same evidence. More than half […]

We are intending to run a Blackheath observing session. As with all observing activities we are dependant on weather conditions, a Go/No Go message will be sent around 6pm on the day of the event. Backup will be Saturday 1st October No booking is needed and all are welcome We will meet at our usual […]

We are intending to run a Blackheath observing session. As with all observing activities we are dependent on weather conditions, a Go/No Go message will be sent around 6pm on the day of the event. Backup will be Saturday 22nd October. No booking is  needed and all are welcome We will meet at our usual […]

We are intending to run a Blackheath observing session. As with all observing activities we are dependent on weather conditions, a Go/No Go message will be sent around 6pm on the day of the event. Backup will be Saturday 19th November. No booking is  needed and all are welcome We will meet at our usual […]

NASA and Rice University in Houston will host multiple events in September to celebrate the 60th anniversary of John F. Kennedy’s historic speech at Rice Stadium, rallying the nation to land astronauts on the Moon before the end of the decade and bring the crew safely back to Earth. from NASA

NASA and Rice University in Houston will host multiple events in September to celebrate the 60th anniversary of John F. Kennedy’s historic speech at Rice Stadium, rallying the nation to land astronauts on the Moon before the end of the decade and bring the crew safely back to Earth. from NASA

NASA has selected three companies to further advance work on deployable solar array systems that will help power the agency’s human and robotic exploration of the Moon under Artemis. from NASA

La misión Prueba de redireccionamiento del asteroide doble (DART, por sus siglas en inglés) de la NASA, la primera en el mundo que pone a prueba una tecnología para defender a la Tierra de posibles peligros de asteroides o cometas, impactará con su objetivo, un asteroide que no supone ninguna amenaza para la Tierra, a […]

NASA’s Double Asteroid Redirection Test (DART), the world’s first mission to test technology for defending Earth against potential asteroid or comet hazards, will impact its target asteroid—which poses no threat to Earth—at 7:14 p.m. EDT on Monday, Sept. 26. from NASA

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