A solar correlation tracker which compensates for image motion in the focal plane of a solar telescope is presented. The design has been implemented using transputers and a video motion estimation processor: the LSI Logic L64720 whose high computational rate overcomes the limitations due to the large computational delays associated with other

Telescopes on La Palma and at La Silla have been used to compare dust extinction in external galaxies with our own Galaxy.

This paper presents the IAC (Instituto de Astrofisica de Canaries, Spain) proposal of a distributed control system intended for the active support of a 8 m mirror. The system incorporates a large number of compact `smart' force actuators, six force definers, and a mirror support computer (MSC) for interfacing with the telescope control system and

The Instituto de Astrofisica de Canarias infrared camera is intended as a common user instrument for the Cassegrain focus of the Carlos Sanchez Telescope at the Observatorio del Teide. The camera will be equipped with a 256 X 256 InSb array, two filter wheels and a centered diamond turned aluminum optical system working at liquid nitrogen (LN2)

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