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Meetings Calendar

Lecture meetings held at the Royal Masonic School, Rickmansworth. (See the Location page for map and plan).

Meetings start at 8pm. The main talk is followed by refreshments, after which we have a tour of the night sky in the planetarium. All meetings are on a Friday and start at 8pm, unless otherwise stated.


Jan 25 - A short history of the western calendar and reform of 1752 - Aris Decanalis
Feb 22 - The Fermi Paradox - Ian Stotesbury
Mar 29 - Spacecraft in Astronomy - Bob Baldwin
Apr 26 - Surveying the sky for radio galaxies - Prof Martin Hardcastle
May 31 - AGM & Members' images
Sept 20 - Rebel Star: The Sun’s Greatest Mysteries - Colin Stewart
Sep 21 - High Top Open Evening
Oct 26 -  SWHAS in conjunction with the BAA "Back to basics Workshop" all day event at the RMS. More details here : BAA Event Site
Nov 29 -  Astrophotograhper of the Year Martin Lewis  -  on his award winning images
Dec 2 -  Quiz with Aylesbury Astronomical Society at the Royal British Legion, Ebury Road, Rickmansworth WD3 1BN at 8pm.
Dec 13 -  Christmas meeting - Members Images / Bring and Buy.
  The following may still be of interest (from previous talks)

The James Webb telescope

The following links are related to the Telescope (they open in new pages)

YouTube video

The NASA site

Web Telescope.org

Notes regarding David Rothery's talk on 25th September:2015

David A Rothery, Professor of Planetary Geosciences, The Open University Pluto and Charon

The new pictures that NASA’s New Horizons probe has begun to beam back have revealed Pluto and its largest moon, Charon, in ever greater detail from what is the first ever spacecraft fly-by.

After a decade-long journey by the New Horizons spacecraft through our solar system, we can finally add Pluto and its main moon Charon to the roster of large icy bodies whose landscapes we have seen. And it was worth the wait. The first detailed images are surprising, showing a remarkable lack of impact craters on both Pluto and Charon.

NASA’s probe passed within 14,000 km of Pluto on 14th July and after a nervous 12-hour wait for its call home, has begun to send back its trove of data, which includes images revealing details as small as 100 metres across. The data will continue to be sent back for the next 16 months or so, but the initial data has sparked renewed interest on this odd couple. Although we may have to wait a while before we see the best of the pictures, what we already have already seen is enough to greatly intrigue planetary scientists such as David.

The most detailed image of part of Pluto is truly staggering. Not a single impact crater is to be seen in this region, so the surface must be very young – reshaped by some sort of geological activity such as faulting or icy volcanism.

David is well placed to comment on the initial findings, having published many books on the planets, volcanology and geology over the past few decades. His long standing research interests, centring on the study of volcanic activity, volcanology and geoscience on other planets, allow him a unique perspective on what all this new information could mean to us in terms of understanding the enigmatic Pluto and Charon.

pluto sharon

Observing at  High Top

Observing is dependent on the weather.

This site houses our own Observatory with a number of instruments available for use by members.

Observing sessions normally take place on Saturday evenings, starting at 8 pm (although this can vary according to the time of year).

For further details see the Locations page (link  menu bar)