Multiobject spectroscopy with optical fibers on the 2.1m telescope at Observatorio ``Guillermo Haro"

Details Multiobject spectroscopy with optical fibers on the 2.1m telescope at Observatorio ``Guillermo Haro" Multiobject spectroscopy with optical fibers on the 2.1m telescope at Observatorio ``Guillermo Haro"

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe.170c&link_type=abstract

"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199

Astronomy and Astrophysics

Astronomy

Scientific paper

Within a collaborative programme between I.N.A.O.E. and Durham University, we present a project to adapt the fibre positioning system Autofib-1.5 (Af-1.5) to the 2.1m telescope at the Observatorio ``Guillermo Haro" in Cananea, Son., Mexico. Af-1.5 is a robot that moves on the x,y & z direction to position 55 fibres across a field plate. It was built at Durham University as a prototype for the William Herschel Telescope (WHT) prime focus fibre positioning system Autofib-2. Af-1.5 has been used on the WHT during two observing runs and its performance has been extensively evaluated in the laboratory. The 2.1m Cananea telescope with a new corrector system will provide a 47.8 arcmin field of view. The corrector mounting is also the mechanical interface between the telescope and the fibre positioner. Af-1.5 fibres diameter are equivalent to 2.1 arcsec, the positioning accuracy to 0.2 arcsec and the minimun fibre separation to 16 arcsec. In the first stage the multifibre system will be used with a low resolution fibre bench spectrograph to study the satellite dynamics around elliptical galaxies to determine the mas s and extension of dark galactic halos.

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