astrograph

[ as-truh-graf, -grahf ]

noun

1. a navigational device for projecting altitude curves of the stars and planets onto charts or plotting sheets.

Other Words From

• as·tro·graph·ic [as-tr, uh, -, graf, -ik], adjective
• as·trog·ra·phy [uh, -, strog, -r, uh, -fee], noun

Word History and Origins

Origin of astrograph¹

astro- + -graph

Example Sentences

Another Sobral telescope, known as an astrograph, also produced lots of star images, but they were blurred and out of focus, perhaps because heat from the sun had affected the telescope mirror.

From Seattle Times

In the end, Eddington wound up throwing out the Sobral astrograph data on the grounds that it was unreliable.

From Seattle Times

Another Sobral telescope, known as an astrograph, also produced lots of star images, but they were blurred and out of focus, perhaps because heat from the sun had affected the telescope mirror.

From New York Times

In the end, Eddington wound up throwing out the Sobral astrograph data on the grounds that it was unreliable.

From New York Times

Astronomers and historians have argued ever since about whether Eddington’s belief that he already knew the answer led him to fudge the eclipse analysis by leaving out the warped astrograph.

From New York Times