Heliometer

Definition:

  • (n.) An instrument devised originally for measuring the diameter of the sun; now employed for delicate measurements of the distance and relative direction of two stars too far apart to be easily measured in the field of view of an ordinary telescope.

Compare heliometer with other words:

heliometer vs. heliometry

heliometer vs. heliometric

distance vs. heliometer

heliometer vs. star

angular vs. heliometer

heliometer vs. sun

diameter vs. heliometer

heliometer vs. telescope

heliometer vs. measuring

heliometer vs. instrument

astronomical vs. heliometer