Gran Telescopio Canarias

The Gran Telescopio Canarias (GTC, aka Gran Tecan) is a 10.4 meter segmented-mirror reflector telescope at the Roque de los Muchachos Observatory (ORM) in the Canary Islands. It is currently (2024) the largest single-aperture optical telescope in the world. It began operation in 2009. Instruments:

• OSIRIS - "Optical System for Imaging and lower Resolution Integrated Spectroscopy".
• MEGARA - optical integral field and multi-object spectrograph.
• EMIR - near-infrared imager and multi-object spectrograph.
• HiPERCAM - multi-band imager.

Future:

• GTCAO+FRIDA - imaging and integral field spectrograph.
• MIRADAS - multi-object spectrograph/polarimeter.
• GTC-HRS - high resolution spectrograph.
• CHORUS - "Canarian Hybrid Optical high-Resolution Ultra-stable Spectrograph".

Past:

• HORuS - high-resolution spectrograph.
• CanariCam - infrared imager with spectrograph.
• CIRCE - imaging and polarimetry.