A telescope equipped to measure tiny angular distances between celestial bodies.
An astronomical tool, predicated on a telescope, for calculating the diameter associated with the sunlight; now familiar with gauge the angular distance between performers alongside celestial figures.
a musical instrument developed initially for calculating the diameter of this sun; today employed for delicate measurements for the distance and relative path of two movie stars past an acceptable limit aside is quickly calculated in the field of view of a regular telescope.
An astronomical instrument, comprising a telescope featuring its objective sawed across in a plane passing through optical axis, and every part organized to maneuver by sliding through the other, its exact position being shown by a micrometerscrew.
an instrument accustomed assess the angular separation of two movie stars which can be past an acceptable limit aside become within the area of view of an ordinary telescope