Question | Answer |
Magnification | Best known
Least important |
Light Gathering Power | Most important |
Resolution | Most difficult to understand
Ability to see fine detail
Scopes resolution is dependent on its aperture |
MMT | Multiple Mirror Telescopes |
Blue Shifted | Object coming toward you |
Red Shifted | Object going away from you |
Continuous Spectrum | Unbroken band of colors
Source sends out light of all visible wavelengths
Glowing Solid
Glowing Liquid
Hot compressed gases inside a star |
Spectroscope | Separates starlight into its colors to identify different wavelengths |
Visible Spectrum | Band of colors when starlight is separated |
Bright Line Spectrum | Emission Spectrum
Comes from chemical elements when they are in the form of a glowing thin gas or vapor |
Dark Line Spectrum | Continuous spectrum with dark lines where light is absorbed |
CCD | Charged Couple Device
Group of photocells electrons collect where light strikes device
Observed brightness is directly proportioned to the area of a telescope's mirror and to the square of the mirror |
Atmospheric Blurring | Looks like asphalt on a hot day |
Schmidt Telescopes | Uses both refracting lens and reflecting mirror
Creates very wide angle views
Best known: Hubble |
Baseline | Difference between two radio telescopes |
Spectrograph | Object used to view the spectrum
Consists of a prism, a lens, and a camera |
Colors of visible spectrum | Red
Orange
Yellow
Green
Blue
Indigo
Violet |
Infrared Astronomy | SOFIA--Stratospheric Observatory for Infrared Astronomy
IRAS |
Ultraviolet Astronomy | IUE--International Ultraviolet Explorer
EUVE--Extreme Ultraviolet Explorer |
X-Ray Astronomy | HEAO--High Energy Astronomy Observatories
AXAF/Chandra |
Gamma Ray Telescopes | GRO--Gamma Ray Observatory |
Cosmic Ray Telescopes | COBE--Cosmic Background Explorer |
Yerkes Observatory | William Bay, Wisconsin |
Twin Telescopes | Kitt Peak, Arizona & Cerro Tololo, Chile |