A group of enthusiastic amateur astronomers run the Community Observatory based on St. Martin's, Isles of Scilly. If you live on the islands or are planning a visit, contact them and enjoy stargazing under their amazing unpolluted dark skies!
Regular meetings with Community Observatory St Martins on Scilly
Tuesday every week from April 2025 to October 2025
COSMOS Observatory, St Martins, TR25 0QN
Join the friendly team of astronomers at the Community Observatory St Martins on Scilly (COSMOS) and experience the truly great dark skies above the Scilly Isles during this one of the facility's regular Tuesday evening open nights that occur from April through to October.
In April, September and October, the observatory is open from 20:00 to 21:00. From May to August; the observatory is open from 21:00 to 22:00. If the skies are clear, events may run longer.
Due to limited capacity, these sessions must be booked in advance.
Forthcoming events by Community Observatory St Martins on Scilly
View these events on our calendar, add them to your calendar or Google Calendar.
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COSMOS Observatory Open Evening
Tuesday 9th September 2025 from 20:00pm to 22:00pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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COSMOS Observatory Open Evening
Tuesday 16th September 2025 from 20:00pm to 22:00pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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COSMOS Observatory Open Evening
Tuesday 23rd September 2025 from 20:00pm to 22:00pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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COSMOS Observatory Open Evening
Tuesday 30th September 2025 from 20:00pm to 22:00pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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Scilly Dark Skies Week 2025 – Dark Skies Walk
Sunday 5th October 2025 from 19:30pm to 21:30pm
Island Hall & Reading Room - Isles of Scilly, St Martins, TR25 0QN
More info
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Scilly Dark Skies Week 2025 – Moonlit Monuments
Monday 6th October 2025 from 19:30pm to 21:30pm
Island Hall & Reading Room - Isles of Scilly, St Martins, TR25 0QN
More info
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Scilly Dark Skies Week 2025 – SeeStar to See Stars
Tuesday 7th October 2025 from 19:30pm to 20:30pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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COSMOS Observatory Open Evening
Tuesday 7th October 2025 from 20:00pm to 22:00pm
COSMOS Observatory, St Martins, TR25 0QN
More info
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Scilly Dark Skies Week 2025 – Optimal Imaging System
Wednesday 8th October 2025 from 19:30pm to 20:30pm
Island Hall & Reading Room - Isles of Scilly, St Martins, TR25 0QN
More info
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Scilly Dark Skies Week 2025 – Quantum and the Aurora talk
Thursday 9th October 2025 from 19:30pm to 20:30pm
Island Hall & Reading Room - Isles of Scilly, St Martins, TR25 0QN
More info
Event locations used by Community Observatory St Martins on Scilly
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COSMOS Observatory
Signal Row, St Martins, Isles of Scilly, TR25 0QN, South West England
Observatory
More info
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Island Hall & Reading Room – Isles of Scilly
Signal Row, St Martins, Isles of Scilly, TR25 0QN
Astronomical Society
More info
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Karma St. Martin’s
Lower Town, St Martins, Isles of Scilly, TR25 0QW, South West England
More info