Broken Records

Largest optical telescope mirror in operation

The current largest optical telescope mirror in operation record is 34 ft, held by Gran Telescopio Canarias, set on March 19, 2014. Last checked October 14, 2026.

34

ft

Gran Telescopio Canarias

Roque de los Muchachos Observatory, La Palma, Spain, 2014

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
Date set
March 19, 2014
Recognized by
Instituto de Astrofisica de Canarias
Last checked
October 14, 2026

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