November 2020 News

28th November

Meteor Detector: The new Blackett Observatory Radio Meteor Detection System was brought up to the Dome today, following initial set up and testing in GKWJ’s office. It is now up and running 24/7, detecting reflections of the GRAVES radio transmission (143.050 MHz) by ionisation caused by meteors as they ablate in the atmosphere. The signal is processed by software (Spectrum Lab) to produce a waterfall of events. The system will keep track of hourly event numbers and should show increased numbers during meteor showers. The Geminids, with an expected peak on the 13th / 14th December, will be its first true test

26th November

GCSE Observing: Despite freezing fog, Remove astronomers came to the Dome to sketch the Moon. They started with a naked eye view, showing the 11 day old phase, a double aureole and Mars only a few degrees away. They then sketched a more detailed view given by the two ETXs and a close up of the crater Tycho, through the 10-inch. Photos were taken with their mobile phones through an ETX

House Visit: 10 pupils from Cotton Shell came to the Dome. Despite the fog the Summer Triangle and Polaris were visible and bright red Mars. The Moon and Tycho crater were viewed in the 10 inch

Next House visit: Thursday 3rd December (DA)

25th November

EP Observing: Under clear skies, but with a Waxing Gibbous Moon, the L6 EP pupil continued his astrophotography work at the Dome with GKWJ, gathering data sets of M45 (Pleiades), the Double Cluster and M81 & M82 (Bode’s & Cigar Galaxies). Photographs of the Moon were also taken, along with ‘test shots’ on a number of targets

19th November

GCSE Observing: Pupils from the Hundred continued their Aided Observing Tasks. Sketches were made of Messier objects – M45 (Pleiades) through binoculars, M31 (Andromeda Galaxy) through an ETX and M57 (Ring Nebula) through the 10 inch. Photographs were taken of star trails around the NCP and of the sky to try and catch meteors. Several late Leonid meteors were seen through the evening

House Visit: 12 pupils from C3 Shell came to the Dome with a tutor. The sky was clear if very damp. M31 (Andromeda Galaxy) and the Milky Way were seen by eye. M45 (Pleiades) was veiwed in Binos and M57 (Ring) was viewed in the 10 inch.

Next House visit: Thursday 26th November (CO)

17th November

Friends Observing: A group of some 23 Friends and pupils gathered online via Zoom to observe the annual Leonids meteor shower. While cloudy conditions meant that optical observing was not possible, all was not lost. The group was introduced to the new radio meteor detection system that is in development for the Dome. CEB introduced the Leonids and GKWJ introduced the radio system. One meteor ‘ping’ was seen on the radio feed – a first for the Marlborough College Blackett Observatory! The challenge is to have the radio system fully installed and operational for the Geminids in December

12th November

House visit: 8 pupils from LI Shell came up to the Dome. Initially it was raining but a break in the cloud allowed views of the main Autumn asterisms and the Milky Way and also all present were able to see M31 by (averted) eye

Next House visit: Thursday 19th November (C3)

9th November

Radcliffe Society: The Society met on Zoom for the November meeting. The topic of ‘Life Elsewhere’ was explored through three videos (phospine in the atmosphere of Venus, tidal heating and the Drake equation) and discussion amongst the group. Next meeting: 7th December

6th November

EP Observing: This year’s astronomy focussed Extended Project pupil had his first evening at the Dome with GKWJ, starting to learn the basics of astrophotography. Images of M31, the Andromeda Galaxy, were taken through the Smith 8-inch under a predominantly clear sky, but intermittent cloud hindered perfect progress

5th November

GCSE Observing: The Hundred GCSE astronomers started their Aided Observing Tasks at the Dome tonight. Sketches were made of M45 (The Pleiades) through binoculars and of M57 (The Ring Nebula) through the 10-inch. Photographs of star trails around the North Celestial Pole were taken

House Visit:11 pupils from C1 Shell came up to the Dome with a Tutor. The sky was largely clear with falling temperatures. A tour was given outside the Dome and then the 10 inch was used to view Mars. The ice cap and some dark green markings were discernable

Next House visit: Thursday 12th November (LI)

3rd November

GCSE Observing: The Remove GCSE astronomers joined CEB and GKWJ at the Dome for an excellent evening of naked eye observing. They made sketches of the main asterisms looking north and then south, adding in the waning Gibbous Moon and a wonderfully bright Mars. Apparent magnitudes of the principal stars were estimated and calculations using local sidereal time were attempted