Discovering the Universe for Yourself

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Presentation transcript:

Discovering the Universe for Yourself Chapter 2 Discovering the Universe for Yourself

SFA Star Charts Star Chart 1 - Northern Region Star Chart 2 - Equatorial Region Star Chart 3 - Equatorial Region Star Chart 4 - Southern Region

SFA Star Chart 1 North Star Declination Right Ascension “Little Dipper” Declination “Pointer Stars” “Big Dipper”

“King” “Queen” SFA Star Chart 1

Chart 1 Problem Find the coordinates of Capella.

SFA Star Chart 1

Summer Solstice Ecliptic Orion Celestial Equator Vernal Equinox Autumnal Equinox

“Summer Triangle” Celestial Equator Vernal Equinox Autumnal Equinox Winter Solstice Ecliptic

Star Chart Exercise 1. Where are the Zodiac Constellations? Circle their names on the star charts. 2. Find the coordinates of Betelgeuse and Sirius. 3. Where is the Sun today? Give the RA, DEC, and constellation

Astrology Connection Where is the Sun on your Birthday? Note: Astrological signs no longer correspond to the location of the Sun on your day of birth! Have we been reading the wrong horoscopes all this time?

SFA Star Chart 4

The Constellation Orion

Constellations Constellations are recognizable patterns of stars in the sky. There are 88 constellations. (e.g. Orion) The 12 constellations along the ecliptic on your star chart are called the Zodiac Constellations.

Asterisms Asterism are recognizable patterns of stars that is not one of the 88 constellations. For Example: The Big Dipper

The Sky Dome Celestial Meridian Polaris Zenith Celestial Equator

Measuring Angles altitude - the angle of a star above the horizon The North Star, Polaris, is not the brightest star in the sky but remains in a fixed position in the sky. The angle of Polaris above your horizon is the same as your latitude in degrees.

Thought Exercise Where are you if Polaris is directly overhead? Where are you if Polaris is on your horizon?

Write this down

View from the Equator

View from the North Pole

Circumpolar Stars are stars that never set. WEB

How do you use these charts? Face North Find Meridian Find the Field of View

SFA Star Chart 1 Date

Date North Horizon