COSMOS Observatory Open Evening
Tuesday every week from April 2025 to October 2025
COSMOS Observatory
Signal Row, St Martins, Isles of Scilly, TR25 0QN, South West
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.
Event organiser
Community Observatory St Martins on Scilly organises these events
Please contact Community Observatory St Martins on Scilly directly for more details regarding their events.
Email: [email protected]
Website: Community Observatory St Martins on Scilly
Local light pollution
COSMOS Observatory is estimated to have light pollution levels similar to adark site dark site location based on the latest data from the VIIRS satellite.
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Urban
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Suburban
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Semi-rural
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Rural
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Dark site
The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.
Forthcoming events
Below is a list of COSMOS Observatory Open Evening events at COSMOS Observatory. You can view events at this location on a calendar.
Stay and gaze nearby
Stay at one of these stargazing-friendly accommodation providers.