Filar Micrometer
An instrument that permits precise measurements at the telescope of the position of visual binary stars and similar objects.
Filtergrams ...
Filar Micrometer
An instrument used with a telescope for visually measuring small angular separations (as between binary stars).
Fine Structure ...
Filar micrometer
A filar micrometer is a device used in astronomical telescopes for precision measurements. The word filar derives from Latin filum, a thread....
s for the telescope
Telescope ...
A Bi-Filar Micrometer produced by Ron Darbinian. It was sold with either a 12mm or 27mm eyepiece attached to the black box that contains the webs and web holding mechanism.
A filar micrometer, an instrument normally used in conjunction with a telescope for visual measurement of the separations of double stars, was employed to estimate the diameters of the first four known asteroids.
Barnard, who used a filar micrometer (an instrument normally employed for visual measurement of the separations of double stars) to estimate the diameters of the first four asteroids.
He, however, successfully employed the instrument in measuring double stars, so close as I" or 2", and using a power of 300 diameters, with results that agreed satisfactorily amongst themselves and with those obtained with the filar micrometer.
A prominence seen in projection on the Solar disk. [H76]
Filar Micrometer
An instrument used with a telescope for visually measuring small angular separations (as between binary stars). [H76]
Fine Structure ...
 See also: Diameter, Planet, Solar, Time, Orbit
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