meridian circle

He ordered a great meridian circle, every part of which may be said to have been formed from his own designs.

Meridian circles are often called by these names, although they are less specific.

Meridian circles required precise adjustment to do accurate work.

He continued regular meridian circle observations for the purpose of time service and observed solar spots.

The observing building housing the meridian circle did not have a rotating dome, as is often seen at observatories.

Many thousands of very accurate positions of stars have been secured with the meridian circle.

It started in 1803 with a meridian circle built by Repsold in 1808.

Meridian circles have been used since the 18th century to accurately measure positions of stars in order to catalog them.

There he repaired the meridian circle and used it to do a determination of the constant of aberration.

Modern meridian circles are usually automated.

They use an altazimuth mount, instead of a meridian circle, fitted with leveling screws.

"Wherever a man is," says Vellutello, "there he has, above his head, his own particular meridian circle."

It is a meridian circle that is dedicated to carrying out high-precision optical astrometry.

In the completed meridian circle from Karl Pistor arrived.

Very soon, however, I heard of a young student at Lund Observatory who worked alone on modernizing the old meridian circle there.

"That's Meridian Circle, at the end of the Parade, where the cults and debating societies meet.

He remained at Lick until 1908, operating the Meridian Circle program to make precise measurements of star positions.

He was assigned to the Meridian Circle, under William Harkness.

The move was supervised by the precision engineering company , who also manufactured an astrograph and a meridian circle.

Much of his astronomical work included measurements with the meridian circle, a catalogue of double stars and stellar photometry investigations.

Meridian circles, Mural quadrants etc.

The Meridian Circle, a meridian circle built in 1907.

This is true only of cameras introduced in the late 60, micrometers of readings near the Meridian Circle to take pictures of decline.

The first automated instrument was the Carlsberg Automatic Meridian Circle, which came online in 1984.

The accuracy reaches from 0.2" (theodolites, small astrolabes) to 0.01" (modern meridian circles, Danjon).