Blackett Observatory Dome
Welcome to the Marlborough College Blackett Observatory, home to the largest refracting telescope in Wiltshire. Learn more...
moon phase info

Solar X-rays Status Status

Geomagnetic Field Status Status
From n3kl.org

SpaceWeather | More weather... Coordinates: 51.25.25 N and 1.44.24 W
Marlborough College
Oxford Astrophysics
Green Templeton College

What's Up - Week of 1st September

  • Astronomical Twilight ends at 21.58 BST at the start of the week and 21.40 BST at the end

  • The Moon is First Quarter on Tuesday and will then wax to Full next Tuesday

  • The two pairs of planets continue to dominate the twilight: Jupiter and Venus pre sunrise in the East (also with bright Sirius) and Mars and Saturn in the West after sunset

  • The Sun has 5 sunspot groups. 2152 is potentially active

  • The ISS make no evening passes this week

  • There are no bright evening Iridium flares this week


Random Blackett Image
Past Events - Public Solar Viewing afternoon - May 2005

News - 11th August

Perseids meteor shower: A small group of Friends came up on a chillier night and clouds cleared to attempt to spot some Persieds. The Full super-Moon made all but the brightest and northern sky meteors visible. In an hour and a half 7 Perseids, a couple at magnitude -2 were seen and two bright sporadics. The 10 inch viewed the edge of the 98 percent Moon showing good detail in limb craters

29th July

Summer School week 3: Some 30 guests joined CEB and JAG at the Dome. The sky was sadly cloudy, though annoyingly t cleared once all had left at 11.30pm

24th July

Summer School week 2: Some 35 guests joined CEB and JAG at the Dome on perhaps the warmest night in memory, even at 11.30pm. Scattered cloud interupted viewing but Mars was seen in the 10 inch with the ice-cap making one hemisphere brighter and the Saturn was viewed with Titan and one other moon fairly easily seen. The viewing was not ideal given the twilight and the warmth and hence poor Seeing. Several satellites were seen and the Milky Way was faintly visible

21st June

Solstice observing: A small group of Friends and College staff gathered late on a superbly clear and warm evening. Though some whispy cloud closed in, the string of targets in the South afforded some firsts for those assembled. Mars was very bright and clearly showed it gibbous phase with 15 percent or so missing and clearly not spherical. A hint of dark features could also be believed in the top hemisphere. Saturn was very clear and showed some banding. The Cassini Division was clear and with Titan bright on one, side as the sky darkened, 4 more moons became visible. Rhea and Dione near the planet and harder to see Tethys and much further away from the planet Iapetus onthe opposire side to Titan. Vesta was viewed and, though only 1" arc, could be resolved as a disc. Ceres, though larger in actual diameter as the closest Dwarf Planets, is further and nearly 3 times dimmer and was barely resolved, though its image was steady and not starlike

15th May

Solar open day: A small group including an OM and family and some staff and family and Friends of the telescope attended the Dome and in, sunny pathces, were able to view the Sun through solar goggles, the solar scope (which showed 8 sunspot groups) and then in H-alpha using the 10 inch which showed a number of large quiescent prominences. The disc itself showed fine detail and large disturbed regions (light coloured plages) around spot 2060

6th May

Prep School evening: CEB held a Q&A evening 'To infinity and Beyond' for 60 scholarship form pupils at Windlesham House School in West Sussex

3rd April

Sun-Earth Day lecture: CEB gave the 12th S-E day lecture 'Close Encounters-Misunderstanding Comets' to a small audience of Friends and visitors

More news...