Deadline: 14/04/2021

Applications for observing time at the 2.2- and 3.5-m telescopes for the Autumn semester 2021 (July 1st – December 31st). The deadline for autumn 2021 proposals is April 14th, 2021, 23:59:59 (UT)

As an ICTS (Spanish Unique Scientific and Technical Infrastructure), the Calar Alto observatory offers to astronomers every semester through an open call for proposals, a minimum of 20% of the available observing time on its two main telescopes: the 2.2m and the 3.5m, the largest of its kind in mainland Europe.

Find more information at: