October 2021 – News

15th October

External Lecture: CEB delivered the lecture ‘The oldest GOTO telescope in the World’ to 35 members of Swindon Stargazers Astronomical Society in their Liddington Hall base

10th October

Friends observing: Just over a dozen Friends joined CEB and GKWJ at the Dome for ‘Double Stars’ observing under hazy, but clearing skies. The session started outside to spot naked-eye doubles: Mizar & Alcor and Algedi, both of which were also viewed through binoculars. The group then moved to the 10-inch to observe 11 different doubles, noting angles of separation, magnitude and colour differences. The stars viewed were: Albireo (Beta Cygni), Epsilon Lyrae (the Double Double), Gamma Delphini, Almach (Gamma Andromedae), 36 Andromedae, 65 Piscium, Psi Piscium, Gamma Arietis, 1 Arietis, Miram (Eta Persei) and to finish, Iota Cassiopeiae (a triple star)

9th October

Marlburian Club Day: CEB hosted 2 groups of Old Marlburians and their families. Some 30 OMs came up to the Dome (ages ranging from 8 to 80). The sky was clear and the sun viewable in solar goggles and then using the white light filter, through the 10”. The large sunspot 2882 was clearly seen with umbra and penumbra and its growing sunspot group noted

8th October

PR visits: A member of Town Council and a photographer joined CEB at the Dome to take some film clips to be used in the PR efforts for the Marlborough Dark Skies Festival at the end of October

5th October

GCSE observing: All but two Pupils from the Remove came to the Dome for their second evening of practical observing with CEB and GKWJ. They were introduced to the southern view. The ‘invisible’ lines of the meridian, the celestial equator and the ecliptic were pointed out, followed by asterisms: the Summer Triangle, the Northern Cross, the Great Square of Pegasus and Andromeda. Jupiter and Saturn were noted on the ecliptic, the faint Andromeda Galaxy and Fomalhaut were seen. The pupils sketched the southern view. The session ended at the 10-inch with a view of Jupiter and its 4 Galilean moons

September 2021 – News

27th September

Friends observing: A group of 10 Friends, including several new members, joined CEB, JAG and GKWJ for an evening of planetary observing through the 10-inch. Saturn was seen first, with two moons (Titan and Rhea), next was Jupiter with its four Galilean moons. We then slewed to Neptune and finally Uranus. Outdoor observations included an overhead ISS pass, the rising Waning Gibbous Moon and the Pleiades through binoculars

24th September

Friends 17th annual drinks: The Friends of the Marlborough Telescope were thrilled to gather at the Dome for the first time in two years. A beautiful evening saw a large number of the outreach group, including several new members, get together for our annual drinks and nibbles

Imaging: GKWJ stayed at the Dome after the drinks to capture some better data of Saturn through the 10-inch. The planet was much higher, at about 17° altitude, giving significantly more stable seeing and far superior quality data

23rd September

House Visit: The season started well with a clear sky to welcome 8 Shell pupils from B1. They were introduced to the facilities of the Blackett Observatory by GKWJ. The group first observed Saturn through the 10-inch, followed by Jupiter. As the sky darkened, the Plough, Polaris and Cassiopeia were pointed out to them. Next visit: Thursday 30th September (BH)

GCSE Observing: 13 GCSE Astronomy pupils (plus a budding astrophotographer) from the Hundred joined GKWJ at the Dome. On arrival, they looked West to see an overhead ISS pass, noticing it redden as it was eclipsed by the Earth’s shadow. They were taken on a tour of the night sky, with a series of questions to test their naked eye observing knowledge. The group then moved to the 10-inch to observe Jupiter, with the Great Red Spot, clear banding and 4 moons visible, followed by Saturn and Titan

Imaging: GKWJ remained up at the Dome to image through the 10-inch, capturing good data of Jupiter with 3 moons and then moved to Saturn, though the planet had sunk low to the horizon by this time, resulting in a poor quality image

21st September

GCSE Observing: 13 members of the Remove GCSE Astronomy set came up to the Dome for their first observing session with GKWJ. The session started with an overhead ISS pass, we then moved to the 10-inch to observe Saturn and its moon Titan. They were introduced to observing and sketching techniques and made a wide-field sketch of The Plough, Polaris and the W asterism of Cassiopeia. The group then observed Jupiter through the 10-inch, where only 3 Galilean moons were visible as Io was occulted. Europa was also occulted later in the evening

Imaging: Inspired by the recent planetary imager visit, GKWJ set up the 10-inch with planetary camera and atmospheric dispersion corrector to attempt an image of Jupiter. A reasonable image of Jupiter with moon Europa was obtained and a time lapse of the occultation of Europa was made from all the captures

20th September

Radcliffe Society: The first meeting of the new academic year was held at the Dome and 15 members of the society enjoyed an evening of observing with GKWJ, CEB and JAG. GKWJ presented the What’s Up for the coming weeks and future plans for increased pupil participation were discussed. Clear, though hazy skies allowed views of Saturn, with moon Titan clearly visible, and Jupiter with banding on its surface and its four Galilean moons spread out in a neat line to be seen through the 10-inch. Next meeting: 8th November

7th September

Observing visit: GKWJ hosted a visitor at the Dome, recounting the history of the Blackett Observatory and the Cooke 10-inch telescope. A second night in a row of near perfect dark and clear conditions allowed a fabulous observing session, starting with the planets: Saturn and 5 moons, Jupiter and 4 moons and Neptune. Next up were M15 (globular cluster), M31 (Andromeda Galaxy, with spiral arm detail observed), Almach (beautiful double star in Andromeda) and the Double Cluster. Finally, the visitor, who is an expert planetary imager, gathered data of Jupiter through the 10-inch to create this fantastic image:

6th September

Observing: GKWJ & JAG saw in the start of the new academic year with a great observing session through the 10-inch. Wonderfully clear skies, no Moon or wind and near perfect seeing gifted the finest views of Saturn and 5 moons at up to x237 magnification, Jupiter with the GRS and its 4 Galilean moons, including a moon shadow transit of Io and finally the pale blue disc of Neptune. GKWJ then took images of the Milky Way over the Dome

Milky Way over the Dome

August 2021 – News

26th August

Olympiad team training camp: CEB joined the UK BAAO team and leaders for the week long 2021 International Olympiad on Astronomy and Astrophysics training camp, based at the Cavendish Laboratory in Cambridge. The team of 5 (3 girls and 2 boys) were introduced to observing techniques, specifically solar observing and analysis of multi-wavelength images, to prepare them for the Observational round of the IOAA to be held remotely in November from Bogota, Columbia.

12th August

Friends Observing: A small group of Friends met with CEB, GKWJ and JAG at the Dome to observe the Perseids Meteor Shower. The forecast was correct and the cloud cover cleared from the West as the group assembled from 22:00 BST. During the first hour 17 Perseids and 2 sporadics were seen. Meteor recording was carried out in earnest for the hour 22:00 to 23:00 UT, when 39 Perseids and 3 sporadics were observed and recorded, including 4 fireballs. It was a magnificent night with a beautifully clear sky, no Moon and the Milky Way clearly visible arcing over the sky. A wonderful return to observing at the Dome for the first Friends session in some 18 months due to the Covid pandemic restrictions

June 2021 – News

28th June

Radcliffe Society: The final meeting of the year took place on Zoom. A number of Shell pupils who will be studying Astronomy GCSE next year also attended. GKWJ gave a What’s Up that highlighted observing opportunities throughout the summer. CEB spoke about noctilucent clouds and JAG gave a Latest News update, with mention of recent research developments on the dimming of Betelgeuse and the Cosmic Dawn. Next meeting will be in September

23rd June

Remove Physics visit: On the first opportunity to see shadows since the Solstice, CEB was joined by a Remove Physics set at the Dome. Measurements of shadow lengths were made at local noon (1pm). These measurements were fed into the National Schools Observatory Solstick website and, knowing the length of the dowling rod used, gave each pupil their own estimate for the circumference of the Earth (out by only 1000km in most cases) in a repeat of the famous Eratosthenes experiment of 3rd Century BC

16th June

Upper Sixth visit: An U6 girl, who was new in the L6 and her HM (IV) came up to the Dome for a tour and to do some solar observing. The mature sunspot 2833 was visible in the Solarscope and well viewed in the ETX and 10 inch with its sunflower-like penumbra

11th June

Upper Sixth visit: 2 U6 girls, who had arrived at the College in the L6 and never visited the Dome, asked for a tour of the observatory with CEB. They were able to view the Solar disc in goggles, a solarscope, the ETX with white light filter and the 10 inch with white light filter, where, though the disc was devoid of sunspots, the photosphere granulation could be clearly seen

10th June

Partial Solar Eclipse: The sky was largely cloudy throughout the eclipse, but a small break in cloud at around 11.30am allowed several of the Remove astronomers to see the edge of the Moon using solar goggles and even take a couple of mobile phone images. GKWJ manged to get a super H alpha shot from his River Park Observatory (see solar section in Images)

9th June

GCSE revision lesson: The Remove astronomy set joined CEB for a revision lesson outsde the Dome. The sky was clear and the sunspot group 2829 viewed in the 10 inch. The College had a film crew on site, so they were able to use some of the pupils in their PR shots

May 2021 – News

27th May

Friends Solar Observing: CEB and GKWJ hosted a small group of Friends who joined our live stream over Zoom. Though there were sunny patches, the seeing/turbulence and hazy cloud made for very blurry images. The two sunspot groups 2824 and 2826 were seen and the odd shape (more elongated in longitude than latitude) of 2826 was obvious. A magnetogram image of the solar disc clearly showed the anomalous orientation of the field in 2826

20th May

Astronomy for All lecture 2021: CEB delivered the 44th Green Templeton College, Astronomy for All (A4A) talk via Zoom. Hosted by Dr Rebecca Surender, GTC Vice-Principal and a Pro Vice- Chancellor of the University. The talk ‘The ‘computer’ who unlocked the Universe’ was attended by an audience from both the University and beyond

5th May

GCSE Solar observing: The Remove astronomers returned to the Dome for an early, Period 1, session. The sky was clear, though it was a little chilly. The Sun had no spots, but with the white light filter and the 10 inch on full aperture, the tiny, 1000km sized, convection cells (granulation) on the photosphere were visible

April 2021 News

23rd April

GCSE Solar observing: As part of Topic 10, the Remove Astronomy set of 15 pupils came up to the Dome and were supervised by CEB and GKWJ. The sky was clear and the Sun was observed first in Solar Goggles and then using Solar Scopes. The rotation rate of the Earth was estimated from the projected image. The 2 ETXs were then used with white-light filters to view the photosphere and the 2 sunspot groups were clearly vsisble. The image was as expected clearer at 35x magnification than 70x. The 10 inch was then used with the hydrogen-alpha filter to view the chromosphere and a large, bonfire shaped, prominence seen on the south westerm limb. This was drawn by the students

March 2021 News

25th March

MCBO Outreach: GKWJ presented a live guided tour of the Blackett Observatory to a Zoom gathering of 50+ members from the Basingstoke and Newbury Astronomical Societies. The audience heard about the history of the observatory and its main instrument, the Cooke 10-inch. The session concluded with a live-stream view of the waxing Gibbous Moon through the 10-inch, allowing viewers to enjoy impressive detail of the Montes Alpes, Rima Suess, Schickard crater and more

22nd March

Radcliffe Society: Members of the society met online for the March meeting. First, a pupil spoke about his Royal Astronomical Society award winning poster on radio meteor detection. The group then looked back at the three recent missions to Mars, enjoying the Night Sky News video from popular Oxford astrophysicist YouTuber, Dr Becky Smethurst. The session ended with an appraisal of the scientific accuracy of the film ‘The Martian’. Next meeting: 24th May

18th March

Sun-Earth Day Lecture: CEB delivered the 2021 NASA/ESA Sun-Earth Day Lecture to a group of Friends, pupils and invited guests via Zoom. The lecture title was ‘The ‘computer’ who unlocked the universe’ – a fascinating look at the work of four of the most influential women in the history of astronomy

16th March

GCSE Observing: 10 pupils from the Remove joined GKWJ at the Dome for observing. The session started with a view of the 3 day old crescent Moon in the 10-inch – a marvellous sight! The pupils then made sketches of the southwestern sky, placing Orion carefully with respect to the horizon, meridian and celestial equator. They estimated the right ascension of Betelgeuse, given the local sidereal time and estimated magnitudes of various stars. A most enjoyable return to observing

11th March

GCSE Observing: Members of the Hundred joined GKWJ at the Dome for a long awaited observing session. Conditions were windy with fast moving patchy cloud. Pupils made an observing target list, selecting one of each astronomical object type. Observing started outside with the naked eye, finding: Orion, Orion’s Belt, Betelgeuse, The Orion Nebula (M42), The Pleiades (M45) and Mars. The Right Ascension of Betelguese was estimated using the Local Sidereal Time and finding the Meridian. The group moved inside to slew the 10-inch to The Whirlpool Galaxy (M51), but unfortunately thickening cloud brought the session to an end. Irritatingly, the sky cleared some ten minutes later!

2nd March

House visit:7 Shell pupils from PR joined CEB on Zoom for the rearranged Dome visit. This was the last visit this year. Visits will recommence in September (hopefully live)

February 2021 News

20th February

Friends Observing: A small group of Friends met online for a lunar observing session. Unfortunately, the evening was cloudy, but that did not stop the observing, GKWJ had filmed about an hour of footage of the similar 10 day old Moon phase in January, captured on a good clear night through the 10-inch. With commentary from CEB and GKWJ, along with facts and figures from JAG, the group explored the lunar surface at various magnifications, identifying craters, mare, rimae, rilles, wrinkle ridges, landing sites and more. The effects of the seeing were very evident, with the familiar ‘boiling’ effect along with moments of great clarity. There was much discussion and great questioning from the group. The highlights of the tour were the detail and shadows visible in features along the terminator and a fabulous view of the crater Copernicus, with its multiple central peaks

11th February

House visit: 7 pupils from TU Shell joined via Zoom. It was very cold at -3 (for CEB)

Next House visit: Tuesday 2nd March (PR)

4th February

House visit: 10 pupils from SU Shell joined on Zoom. The evening was mild and damp

Next House visit: Thursday 11th February (TU)

January 2021 News

28th January

House visit: 8 pupils from PR Shell joined via Zoom. Unfortunately the wifi was not stable and the evening had to be abandoned. The visit is rescheduled for Tuesday 2nd March

Next House visit: Thursday 4th February (SU)

21st January

House visit: 10 pupils from NC Shell joined CEB via Zoom along with their HM and family and the new Deputy Head (Co-Curriculum) and family. The event was recorded for those not attending, due to time zones. The evening was cloudy.

Next House visit: Thursday 28th January (PR)

18th January

Radcliffe Society: Members met online to hear GKWJ present an Observing Challenge for the coming weeks, with objects to be viewed by naked eye, binoculars and a small telescope. This was followed by an introduction to the Blackett Observatory Radio Meteor Detection System. Next Meeting: 8th February

16th January

Friends Observing: A group of a dozen Friends met on Zoom for the annual ‘Bring Your Own Telescope / Binoculars’ observing session. Cloudy conditions prevailed, so a Q&A session was enjoyed. A whole range of questions were raised, ranging from ‘how do I actually find objects with a pair of binoculars?’, through to ‘what is the best approach to start astrophotography with my 9.25 inch Celestron telescope?’. It was a stimulating session, with great participation from all attending

14th January

House visit: 7 Shell pupils from MO joined CEB on Zoom. Several were based overseas and thus the event was recorded. The night was mild and cloudy

Next House visit: Thursday 21st January (NC)

7th January

House visit: The first House visit of the term occured remotely via Zoom, a new venture. The majority of Shell pupils from MM were able to attend and the visit was recorded for those in different time zones. The night was cold and foggy, but only CEB was exposed to this. The pupils could sit in the warm in their homes for the observatory tour

Next House visit (Zoom): Thursday 14th January (MO)

2nd January 2021

Friends Observing: A group of around a dozen Friends joined CEB, GKWJ and JAG online via Zoom to observe the Quadrantids meteor shower. It was cloudy, so observation was only possible with the Radio Meteor Detection System. CEB gave an introduction to the Quadrantid shower and GKWJ gave an update on the radio system. We then watched for meteors, but it was relatively quiet with only a small number of short ‘pings’ seen. The peak of the Quadrantid shower evidently hadn’t started yet. The radio detector live stream continued online through the night and activity has increased significantly, with a constant stream of events visible by the morning

December 2020 News

15th December

Great Conjunction: JAG and GKWJ went to the Dome to try and see Jupiter and Saturn as they approached their Great Conjunction. A gap in the clouds allowed the planetary pair to be viewed through binoculars and just in the 10-inch. Their separation of 45 arcminutes put the two planets on the very edge of the eyepiece

13th December

Friends Observing: Cloudy conditions and Covid restrictions did not deter over thirty Friends and members of the U3A from gathering to observe the annual Geminids Meteor Shower. We met online via Zoom; CEB introduced the Geminids, GKWJ spoke about the new radio meteor detector and then we observed the waterfall from the radio system. We saw many ‘pings’ accompanied by the characteristic ‘weeeooo’ sound emerging from the ‘ssssshhhh’ of the static background noise. In the two hours of observing from 8pm to 10pm, we witnessed the system detect over 200 events

10th December

House Visit: 11 Shell pupils from EL came up to the Dome. It was cloudy and raining

Next House visit: Thursday 7th January (MM)

7th December

Radcliffe Society: A select band of members met online. GKWJ gave a round up of What’s Up over the coming months. A pupil read out their essay entitled ‘Do Humankind’s Best Days Lie Ahead?’ where the prospect of space travel and extra terrestrial colonisation was explored. Finally, a pupil introduced a video ‘Does Planet 9 Exist?’, which provoked interesting discussion. Next meeting: 18th January 2021

3rd December

House visit: 14 Shell pupils from DA came up to the Dome with a Tutor. It was cloudy

Next House visit: Thursday 10th December (EL)

1st December

House visit: 10 Shell pupils from IH came up to the Dome with a Tutor. It was cold and cloudy

Next House visit: Thursday 3rd December (DA)

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

October 2020 News

18th October

Friends Observing: Unfortunately cloud prevented the scheduled observing of double stars, but that did not deter us from meeting. A group of around a dozen Friends gathered online for the first ‘Cloudy Alternative’ and considered the topic of ‘Life Elsewhere’, inspired by the recent discovery of phosphine in the atmosphere of Venus. A fascinating discussion ensued, though ultimately inconclusive, we all agreed that simple life forms are probably abundant while complex life forms require a complex set of conincidences and are therefore likely to be extremely rare

15th October

GCSE Observing: 8 Hundred astronomers had their first evening of the year at the Dome. It was cloudy to start with, but soon cleared to enable a revision session Sky Tour

9th October

GCSE Observing: 10 Remove GCSE astronomers came up to the Dome for their first evening of observing. Under a cold and clear autumn sky, they enjoyed a Sky Tour around the major asterisms, the Andromeda Galaxy, the Milky Way and the planets, Jupiter, Saturn and Mars. The invisible ‘lines in the sky’ were identified. They then used the clinometers they had made in class earlier to measure the altitude of Polaris, calculate the altitude of the Celestial Equator, measure the alitude of the star Deneb and calculate its Declination. They were also able to estimate Deneb’s Right Ascension given its distance from the meridian and the local sidereal time. Finally Mars was viewed through the 10inch, where some surface detail was visible

8th October

House visit: 12 pupils from C2 Shell and a Tutor came up to the Dome. The sky was largely cloudy, though allowed sights of 2 major asterisms, the Saucepan and Polaris and the Summer Triangle. Jupiter and Saturn were also visible as the group departed

Next House visit: Thursday 15th October (IH)

1st October

House visit: 11 Shell pupils from BH came up to the Dome. The sky was cloudy and it was raining by the end of the evening

Next House visit: Thursday 8th October (C2)