Astronomy 1

In the Ptolemaic theory, the point off center in the deferent from which the center of the epicycle appears to move uniformly

Inversely related to the energy of a photon

The distance between an objective and its focused image of a very distant object

The lens or mirror that first produces a focused image as opposed to modifying, enlarging or redirecting the image

The point at which the objective mirror forms an image

A focus location directly beneath the objective mirror

a focus location at the upper side of a telescope

mounting in which one axis points to a celestial pole

Mounting in which one axis points vertically upward

the ability of a telescope to reveal fine detail

a unit of distance equaling 10 to the negative 10 meters

a spectrum of known spectral lines used to identify unknown wavelengths in an objects spectrum. This helps identify the fingerprint of the source

In an equatorial telescope mounting the axis that is parallel to earth's axis

The optical design that uses a thin corrector plate at the entrance to the telescope tube

the period of the phases of the moon

The time a celestial body takes to turn once on its axis or revolve once around the sun

An objects orbital period with respect to the sun

The orbital point of greatest distance from the sun

The point farthest from Earth in the orbit of a body circling Earth

On the sun, the faint outer atmosphere composed of low-density high temperature gas

An 18 year, 11 day period after which the pattern of lunar and solar eclipses repeats

The points where an objects orbit passes through the plane of Earth's orbit

The apparent change in the observed position of an object due to change in the location of the observer

in the Ptolemaic theory a small circle in which a planet moves

In the Ptolemaic theory, a large circle around Earth along which the center of the epicycle moved

the piont closest to earth in the orbit of a body circling Earth

The bright visible surface of the sun