TELESCOPES

Laboratório Nacional de Astrofísica

Pico dos Dias Observatory (OPD)

GEMINI

SOAR

• 1.6m Perkin-Elmer
• 0.6m Boller & Chivens (IAGUSP)
• 0.6m Zeiss Jena
• Summary of characteristics

1.6m Perkin-Elmer

This is main telescope at OPD/LNA. It was commissioned in 1981. Its focal ratio at the Cassegrain focus is f/10 and the optical design is Ritchey-Chrétien. At the Coudé focus the focal ratio is f/31.2 after some conversions from a secondary that delivers a f/150 beam. The telescope points under control of a program developed by LNA and UFMG. The absolute precision of the pointing is about 15 arcsec. This telescope is used in photometric and spectroscopic projects.

This telescope was installed at the OPD in 1992 through an agreement between the University of São Paulo and LNA. The focal ratio at the Cassegrain focus is f/13.5. The optics is of Ritchey-Chrétien type. The pointing system for this telescope is very similar to the one developed for the 1.6-m telescope. The telescope is used exclusively for photometry.

This telescope is the result of a coffee trade with the late East Germany in the sixties. For many years it was stored near Brazópolis and finally installed at OPD in the beginning of 1983. It is a classical Cassegrain with parabolic/hyperbolic primary/secondary. The equivalent f-ratio is f/12.5. The instrument has manual pointing. It is used exclusively for photometry.

Characteristics of the telescopes at OPD

Notes:
a) Taking into account a central obscurity of 20%
b) At the Cassegrain focus