Superb image of Comet Lemmon C/2023 H2 taken by member Richard Bohner on the 11th Nov 2023 from Arizona, USA. Richard used the following to acquire his image – Canon 5D Mk IV on a Celestron 8” SCT. Magnification about 100X. 60 seconds exp. At ISO 10K. The comet was discovered on April 23, 2023 […]
Five more transits done! TOI-3688 A b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.98 Jupiters, it takes 3.2 days to complete one orbit of its star and is 0.0456 AU from its star. Its discovery was announced in 2023. https://exoplanets.nasa.gov/exoplanet-catalog/8781/toi-3688-a-b/ Exoplanet GPX-1 b is in the constellation of Perseus. […]
On Wednesday 22nd November 2023, CMHASD were back at Hall Place & Gardens to hold a star gazing event from 7pm to 9pm. We had brilliant support from our members who bought along a variety of telescopes, cameras, meteorites and other displays for our guests. CMHASD Chairman John Archer wrote ”Last week at Hall Place […]
A huge congratulations to CMHASD members Dave Grist and Steve Floodgate for receiving the BAA Horace Dall medal & gift this year. Chairman John Archer wrote ”For anyone who travelled up to the Institute of Physics last Saturday or tuned in via Zoom for the BAA meeting would have seen this year’s recipients of the […]
Stargazing at Hall Place with CMHASD on the 14th February 2024. Tickets can be purchased at: https://www.hallplace.org.uk/event/stargazing-february-2024/. We will be there from 7pm to 9pm. (Doors open from 6.45pm) Outdoor activities are weather dependant. Advance booking required. Please note this is a ticket only event organised by Bexley Council. Below is a selection of CMHASD […]
Below is a brief summary of the latest trip by CMHASD members to Kelling Heath for the Autumn Equinox Star Party written by Simon Dawes. ”10 Members, 5 pitches, 2 tents, 2 caravans, 1 camper van and a lodge set the scene for a damp and windy long weekend. If you decided to go to […]
Fine examples of sundogs and part of a 22-degree halo captured by member Jim Buchell on the 25th September 2023 from Dartford. ”A sundog, also known as sun dog, mock sun or parhelion, consists of glowing spots around the sun. They are created by sunlight refracting off plate-shaped ice crystals in the cirrus clouds. Sundogs […]
A nice set of images showing how the Sunspot AR3395 developed over 5 days as it moved across the Sun in August by member Simon Dawes.
2023 October 21/22 Aristotle University of Thessaloniki, Greece 3rd ExoClock Annual Meeting CMHASD trustees Martin Crow, Simon Dawes and Dr Mike Rushton attended the 3rd Annual Conference of ExoClock in Greece, a project to improve the ephemeris of exo-planet transits for the European Space Agencies, Aerial Mission, due to launch in 2029. During the conference […]
One more for the ExoClock project – this one being the first for CMHASD trustee and treasurer Keith Rickard. It is of Exoplanet HAT-P-23b in the constellation Delphinus. ”HAT-P-23 b is a gas giant exoplanet that orbits a G-type star. Its mass is 2.09 Jupiters, it takes 1.2 days to complete one orbit of its […]