This listed building located in the centre of Aldershot Garrison comes under the proud guardianship of Farnham Astronomical Society.
It is home to an original 8-inch cell refractor telescope mounted on an equatorial pillar with counterweight clockwork drive, built in 1891 by Dublin’s famous Sir Howard Grubb.
Except for infrequent public open evenings, visits to the observatory are by arrangement only.
Photo: Farnham Astronomical Society
Location events organiser
Farnham Astronomical Society organises events at this location
Please contact Farnham Astronomical Society directly with any enquiries relating to visiting this location
Email: [email protected]
Website: Farnham Astronomical Society
Twitter: @FarnhamAS
Weather forecast
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23/04/24
9° 7% -
23/04/24
7° 5% -
24/04/24
6° 5% -
24/04/24
6° 8%
Weather forecast for Alpine Snowsports Farnborough (0.6 miles away) updated 23/04/24 at 16:00.
Local light pollution
The Alexander Observatory is estimated to have light pollution levels similar to an urban 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.
Best time to visit
The below chart shows when the skies will be at their darkest at this location and therefore the best time to visit. Moonlight is shown in light yellow and the Sun's twilight in light blue. Midnight on the date shown is shown as a white line with sunset to the left and sunrise the next morning to the right. A black background with stars shows the best times for stargazing. See our dark sky calendar for more details.
Tue 23rd Apr
Wed 24th Apr
Thu 25th Apr
Fri 26th Apr
Sat 27th Apr
Sun 28th Apr
Mon 29th Apr
Find more dates
If you are planning to visit this location check our dark sky calendar to find out when is best!
Calendar