Equatorials Sentence Examples

We believe the first important equatorials in which the declination was read from the eye-end were the 15-in.

Equatorials of types A, B, C and D have the advantage of avoiding interposed reflecting surfaces, but they involve inconveniences from the continual motion of the eye-piece and the consequent necessity for providing elaborate observing stages or rising floors.

The observatory grounds were enlarged; two powerful instruments of the novel kind known as coude equatorials were installed; a spectroscopic department was established, and the gigantic task of re-observing all Lalande's stars was completed.