The best conditions give a seeing disk diameter of ~0.4 arcseconds and are found at high-altitude observatories on small islands such as Mauna Kea or La Palma.
The European Northern Observatory is the name by which the Instituto de Astrofísica de Canarias and its observatories (the Teide Observatory on Tenerife and the Roque de los Muchachos Observatory on La Palma) are collectively known.
At the time of his death he was managing the MAGIC II telescope project, the companion to the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescope situated 85 metres from its counterpart at the Roque de los Muchachos Observatory on La Palma, one of the Canary Islands.
The largest IACT telescope is the 17 m MAGIC telescope at the Roque de los Muchachos Observatory in La Palma, to which a second 17 m telescope was added in 2009.
The seeing statistics at ORM make it the second-best location for optical and infrared astronomy in the Northern Hemisphere, after Mauna Kea Observatory, Hawaii.
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Roque de los Muchachos Observatory (Spanish: Observatorio del Roque de los Muchachos, ORM) is an astronomical observatory located in the municipality of Garafía on the island of La Palma in the Canary Islands.
It was discovered on November 24, 2002 by M. R. Zapatero Osorio and E. L. Martin's team at the Roque de los Muchachos Observatory.
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