Setting Circle

Some articles on setting circle, setting circles:

Stargazing - Common Techniques - Setting Circles
... Setting circles are angular measurement scales that can be placed on the two main rotation axes of some telescopes ... Since the widespread adoption of digital setting circles, any classical engraved setting circle is now specifically identified as an "analog setting circle" (ASC) ... equatorial coordinates), the telescope user can use the setting circle to align the telescope in the appropriate direction before looking through its eyepiece ...

Famous quotes containing the words circle and/or setting:

    And year by year our memory fades
    From all the circle of the hills.
    Alfred Tennyson (1809–1892)

    May we two stand,
    When we are dead, beyond the setting suns,
    A little from other shades apart,
    With mingling hair, and play upon one lute.
    William Butler Yeats (1865–1939)