unit 5

Astronomy 111 with Rosenfeld,gharanfoli at University of South Carolina - All Campuses

About this deck

By: Thomas Kemp
Textbook: A Self-Paced Study Guide AND Laboratory Exercises in Astronomy, 12th Edition by J.L. Safko AND Discovering Astronomy, USC Version, 4th Edition by S.J. Shawl AND M.C. LoPresto - website
Created: 2010-02-06
Size: 18 flashcards
Views: 14

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alpha centrui is the ______star in constellation centurius

brightest

many stars were named by

arabic astronomers

ideal image of a star in a tele is a small disk called an

airy disk

earths atomosphere makes disks of star images larger or smaller

larger

ideal image of a star is a _____ disk.

airy

irregualar spikes are caused by

imperfections in telescope

reflection off of back of photographic plate causes

a ring

round disk is caused by

dirrffraction of edges of round tele

ring sourrounding the star is caused by

reflection of the back of photographic film

one parsec

is 206,265 aus or 3.26 ly

possible definition for the parsec i the distance at which diameter of the earth appears to intersect

10 sec of arg and radius not diameter

objective brightness is of star is measured by

camera and film and photomutiplier

subjective brightness si measured by the

human eye

darkening of photographic plate is ________ to amount of light failing on the plate

proportinal

herschel found the relationship to what

magnitued scale and the actual amound of light present

the magniturde system was devised by

hipparchus

About this deck

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“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy