Mount Hamilton's Weather Worries: Protecting a Piece of Astronomy History

A Fierce Storm Strikes Mount Hamilton

Date: December 25, 2023 Location: Lick Observatory, Mount Hamilton

A severe storm on Christmas morning caused significant damage to the historic dome housing the Great Refractor telescope at Lick Observatory. The telescope, built in the 1880s, is a cornerstone of astronomical history and a major attraction for visitors.

The Damage

• Dome Compromised: A large door was torn off, leaving a gaping hole.
• Water Infiltration: Rain poured in, soaking the interior.
• Immediate Response: Workers are preparing to repair the dome using wooden frames and plywood, pending a break in the weather.

Ongoing Efforts

• Weather Forecast: More rain is expected, with strong winds.
• Protection Measures: Scaffolding and plastic are being used to shield sensitive equipment.
• Drying Process: Heaters and dehumidifiers are in use to dry the wet floor.

The Great Refractor's Status

• Current Condition: The telescope is believed to be safe, but it has not been inspected yet.
• Dome Door: May need to be replaced if repairs are not feasible.
• Other Telescopes: Remain operational and unaffected.

Historical Significance

The Great Refractor played a pivotal role in discovering Jupiter's fifth moon. Although newer telescopes have since taken over, it remains a symbol of astronomical heritage and a key part of the observatory's visitor programs.

Impact on Visitors

• Visits Suspended: Until the dome is repaired, public viewings are on hold.
• Repair Timeline: Could take several months, causing a significant disruption to the observatory's programs.