Grand Prisme Objectif telescope (decommissioned)
The Grand Prisme Objectif is a copy of a telescope installed at the Observatoire de Haute Provence in France. One half of the telescope is a 40-centimetre objective prism for obtaining the spectra of many objects at the same time. The other telescope is for guiding. The GPO was first operated in Zeekoegat, South Africa from 1961. The Grand Prisme Objectif was ESO's only refracting (lens) telescope.
More information about the GPO's French "twin" is at the Grand Prisme Objectif external page.
Astrometry, stellar spectra for classification and radial velocities, minor planet discovery.
Grand Prisme Objectif telescope
|Name:||Grand Prisme Objectif telescope|
|Diameter. Primary M1:||0.40 m lens (visual/guiding tube and second photographic tube)|
|Material. Primary M1:||doublet Ross lens (flint glass & crown-barium)|
|Diameter. Secondary M2:||none (refractor)|
|Material. Secondary M2:||none (refractor)|
|Diameter. Tertiary M3:||none (refractor)|
|Mount:||Equatorial yoke mount|
|First Light date:||6 June 1968
|Decommissioning date:||Decommissioned in 1996 and replaced by 1-metre MarLy telescope.|