STELLA observatory
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The STELLA observatory, located on Tenerife, consists of two telescopes with a
single instrument each contained by a common building with a roll-off roof.

* STELLA-I: is the first telescope on site, it is a 1.2m Alt-Az telescope with two Nasmyth foci, one equipped with a derotator. It hosts the wide-field imaging instrument WiFSIP (Wide Field STELLA Imaging Photometer).
* STELLA-II: was the second telescope, it is mechanically identical, but only has one focus position in the prime focus, where the light is fed into a fiber.
* SES: STELLA Echelle Spectrograph
* WiFSIP: