Largest optical telescope mirror in operation
The current largest optical telescope mirror in operation record is 34 ft, held by Gran Telescopio Canarias. Last checked October 10, 2026.
34
ft
Gran Telescopio Canarias
- Holder
- Gran Telescopio Canarias
- Record
- 34 ft
- Metric
- 10.4 m
- Exact figure
- 10.4 m segmented mirror (36 hexagonal segments)
- Location
- Roque de los Muchachos Observatory, La Palma, Spain
- Recognized by
- Instituto de Astrofisica de Canarias
- Last checked
- October 10, 2026
Sources
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