B0;136;0c Blackett Observatory - Marlborough College Blackett Observatory
Blackett Observatory Dome
Welcome to the Marlborough College Blackett Observatory, home to the largest refracting telescope in Wiltshire. Learn more...
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SpaceWeather | More weather... Coordinates: 51.25.25 N and 1.44.24 W
Marlborough College
Oxford Astrophysics
Green Templeton College

Saturday 29th: Friends Optical Doubles observing: 8pm (if weather permits and if the 10 inch is operational)

NASA Astronomy Picture of the Day
Eagle Aurora over Norway

What's Up - Week of 24th October

  • Astronomical Twilight ends at 19.46 BST at the start of the week and at 18.34 UT at the end. The clocks go back one hour to UT (GMT) in the early morning of Sunday 30th

  • The Moon is waning to New on Sunday

  • The Sun has 2 sunspot groups, neither of which is currently active

  • There are no evening ISS passes this week

  • There are two bright evening Iridium flares this week on Tuesday at 17.52.55 at 18 degrees altitude in W and Saturday at 18.20.43 at 39 degrees altitude in SSW


Random Blackett Image
Projects - GCSE Drawings

News - 22nd October

Orionids: a very small group gathered, with clear skies near the zenith and a good Milky Way, to catch some Orionid meteors. None were seen. Neither were any satellites and we suspected that the high misty cloud may have obliterated all but the brightest lower altitude meteors. One bright sporadic was seen and two possible Northern Taurids

10th October

GCSE Observing: One Hundred pupil ran up to get the chance of photographing the 8 day old Moon for his Lunar features project. Initially cloudy, the sky cleared. Seeing was poor but the Moon bright and well placed for observing in the 8 inch Smith

6th October

House vist: 9 pupils from BH Shell came up to the Dome, including the grandson of Basil Blackett, after whom the Observatory is named. The sky was largely cloudy but the Moon was viewed in Binos and the ETX

Next House visit: Tuesday 1st November (SU)

GCSE Observing: 1 pupil who is embarking on lunar feature photography cam up to catch the waxing Crescent Moon. The Moon was low by 8.30pm and the heavy 8 inch Smith had to be moved to the top corner of the parking space. Trial exposures were done and despite some tree branches interfering some decent first images obtained

5th October

Drive Engineer visit: Following the lightning storms in August, a visit was needed to attempt to locate the cause of malfunction. After a couple of hours of rewiring and testing, it seems likley that the main processor chip needs replacing. It is hoped to get the 10 inch operational after half-term

4th October

GCSE Observing: 4 Hundred and all 10 Remove pupils came up to the Dome, joning CEB and DGR. In light wind and no moon some work was carried out and an introduction for some to the Dome. The binos focused on M31 Andromeda and M45 Pleiades at the end of the evening). The ETX was used for Star Counts (having viewed M82 for the first time before the pupils came up). The Binos were also used to locate and draw M13 in Hercules

30th September

Dr Payel Das visit: Dr Das from Oxford University Theoretical Physics Dept came to attend physics lessons in the morning, have lunch with a number of Astronomy pupils and attend Period 6 with all the Remove and Hundred Astronomers. After supper with invited Physicists, She then gave the lecture 'Galactic Archaeology' in L3 in the evening to Astronomers and 6th Form Physicists

29th September

House visit: The first Shell House visit of the year took place. The sky was largley clear and the temperatures were falling. The 10 inch was out of action following the August storms and so M31 Andromeda was viewed in the Binos, having been located by eye

Next House visit: Thursday 6th October (BH)

GCSE Observing: The first evening for observing saw 4 of the Hundred coming up to the Dome for a familiarisation session. M31 was viewed by eye and in binos and the Smith 8 inch was brought out to view Altair and to practice some star photography

23rd September

Friends drinks party: The 12th annual Friends drinks party took place at the Dome with long standing and new Friends having a chance to catch up and look ahead to the winter

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