test 1 Flashcards
the distance between 2 radio telescopes that are used for interferometry
baseline
an unevenly spaced series of lines of different colors and brightness
Bright-Line Spectrum
Photo cells more sensitive to light than a photographic plate used with an optical telescope and thereby improving the image
charged couple device
an unbroken band of colors which shows that its source is sending out light of all visible wavelengths
continuous spectrum
A continuous spectrum with dark lines were light is absorbed
Dark line spectrum
an apparent change in the wavelength of radiation in which there is relative motion between the source of radiation and the receiver
doppler effect
forms of energy that travels at a speed of 300,000 km/s, each form having a different frequency and wavelength
electromagnetic energy
total range of electromagnetic waves, from radio waves to gamma rays 
electromagnetic spectrum
The use of two radios telescopes to detect a radio signal from the same point in space and to determine the signals location
interferometry
A reflector that forms an image by combining the light from each of several mirrors and focusing it on a single point
multiple mirror telescope
A tool that uses a large lens or mirror to gather rays of light and focus them on one spot, and smaller lenses to magnify the image
optical telescope
The study of radio waves from space
radio astronomy
A group of radio telescopes, instruments that pick up radio waves emitted by bodies in space
radio telescope array
A telescope that uses one concave mirror as its objective, also called a single mirror reflector
reflecting telescope
A telescope that uses a convex lens as a subjective also called a refractor
refracting telescope
