RUSSIA.DIRECT
Science · Karachay-Cherkessia

In the Caucasus, looking far beyond Earth

A six-metre mirror and the patient work of collecting distant light.

BTA-6 telescope dome under the stars
BTA-6 telescope dome under the stars. AlisaLandau · CC BY 4.0 · 2019-01-02. Archive illustration; not a photograph of a recent event.

The Special Astrophysical Observatory’s BTA telescope stands near Mount Pastukhov at about 2,070 metres. Its main mirror measures 6.05 metres across.

The observatory supports research programmes and develops scientific instruments. Image quality depends on atmospheric conditions and the temperatures of the mirror and air inside the dome.

This is a profile of an established research instrument, not a new-launch announcement. Check visitor access directly before planning a trip.

Sources & context

A russia.direct editorial selection based on open sources. Checked 24 September 2026. Practical suggestions are a decision guide, not a promise of outcomes.

Editorial principles
← Back to Science
RUSSIA.DIRECT / A CLOSER LOOK
Credit & licence ↗