Home > Terms > English, UK (UE) > Solar circle

Solar circle

A circle, placed on the reticle of a transit or theodolite, with an angular radius of 15' 45" and centred on the intersection of the cross hairs. The Sun's radius on 1 July is 15'45" and is approximately the minimum for the year; there is a slight, noticeable overlap of the image from about September to April. In making observations, the image and the circle are taken concentrically to result in horizontal and vertical angles to the Sun's center.

This is auto-generated content. You can help to improve it.
0
Collect to Blossary

Member comments

You have to log in to post to discussions.

Terms in the News

Featured Terms

Harry8L
  • 0

    Terms

  • 0

    Blossaries

  • 1

    Followers

Industry/Domain: People Category: Personalities

Rush Limbaugh

Born Rush Hudson Limbaugh III (January 12, 1951), an American radio talk show host, conservative political commentator, and an opinion leader in ...

Contributor

Featured blossaries

10 Architectural Structures that Nearly Defy Gravity

Category: Entertainment   2 10 Terms

7 Retro Cocktails

Category: Food   1 7 Terms