What Is Astronomy? Write this on a new sheet of looseleaf

Slides:

Advertisements

Similar presentations

Earth’s Motion in Space March 1, 2011

Advertisements

 IAU – International Astronomical Union  Determined the 88 constellations  Remember the Celestial Sphere, spherical “shells”?  When viewing stars using.

Motions of the Earth, Moon and Sun

Earth’s Rotation and Revolution

any object in space outside of Earth's atmosphere

Apparent Motions of Celestial Objects

The Earth Rotates.

An Earth Day Sidereal Day: 23 hr 56 min 4 sec Motion relative to background stars Mean Solar Day: 24 hours The average time between meridian crossings.

Motions of the Celestial Sphere. Constellations Sky looks like a dome with the star painted on the inside. 88 constellations such as Ursa Major, Orion,

Patterns in the Sky (cont)

Aim: What are the apparent motions of the stars and planets?

Copyright © by Holt, Rinehart and Winston. All rights reserved. Chapter 1 Section 3 Mapping the Stars.

Do Not Write What is in Yellow APPARENT MOTIONS OF THE CELESTIAL OBJECTS.

Fix Astronomy Chapter 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Constellations & Motions in Our Sky

The Celestial Sphere Lab 2. Celestial sphere Geocentric model zenith - the point on the celestial sphere that is directly over our heads always 90˚ from.

Observational Astrophysics in the visible light Shai Kaspi Technion - March 2015.

 Astronomy- the study of all physical objects beyond earth.

Celestial Sphere. Earthly Sphere Latitude measures the number of degrees north or south of the equator. –DeKalb at 41° 55’ N Longitude measures degrees.

A scientific model.  Why do we use the model of the celestial sphere when studying the night sky, even though it does not accurately represent three-dimensional.

Seasonal Motion. Axis Tilt  Ecliptic The Earth’s rotation axis is tilted 23½° with respect to the plane of its orbit around the sun This means the path.

1 Homework Q & A Junior Navigation Chapter 1 Lighthouses in the Sky.

1 Lines in the Sky In order to use the sky to measure time you need to measure the location of objects in the sky. We will look at two methods of measuring.

 Celestial Sphere: an imaginary sphere on which all the celestial objects would appear  Celestial object: any object in the sky that genuinely appears.

Earth, Sun, Moon and the Seasons Topic 4 and 6 Discussion Question Review Question.

Celestial Sphere Facts: It’s an imaginary sphere with earth in the center. It is useful for locating constellations and stars on a star map.

EARTH IN SPACE. A reminder about earth  The earth is almost a sphere  We locate points on the sphere with 3 coordinates – Longitude (180º W º.

Bell Ringer Describe the difference between the geocentric model of the solar system and the heliocentric model of the solar system.

AIM: WHAT IS THE CELESTIAL SPHERE? DO NOW: 1.WHICH DATE BEGINS THE SUMMER SOLSTICE? 2.WHERE DO THE SUNS DIRECT RAYS STRIKE DURING THE EQUINOX? 3.HOW MUCH.

Celestial Motions And Celestial Sphere.

Constellations pg. 65. Constellation section of the sky with a recognizable star pattern. 88 listed 48 from Ptolemy.

Local and Sky Coordinates

To use and understand celestial co-ordinates. To explain why Polaris remains fixed in the sky at an elevation equal to latitude.

MOTIONS OF SKY. Goals To identify the different parts of the celestial sphere model To understand how to express the location of objects in the sky To.

Chapter 4: Rising & Setting Stars © BRIEF

Observational Astronomy Mapping the Heavens Coordinate Systems We have two different ways to locate objects in the sky: Celestial equatorial system -Right.

Joseph Howard T T he C elestial S phere Celestial Object Every object visible in the sky. They appear to rise in the east and set in the west. Example.

What is apparent motion? Important to understand what we see and what is actually happening. Apparent motion is what we see from Earth Actual motion is.

Earth Motions 1)Rotation – the spinning of an object on its axis. (Like a figure skater or a CD) 2)Direction of Rotation – Earth turns west to east or.

The Compass Rose and Azimuth Write the direction and degrees in the boxes provided. 0 (360) E W S 180.

Topic: Mapping the Stars PSSA: D/S8.D.3.1 Objective: TLW use star patterns and simple tools to locate objects in the night sky.

The animation indicates a shadow growing to the east, because (1) the sun is rising in the east. (2) the Earth rotates the same way. (3) the sun is setting.

Astronomy Unit 1 The celestial sphere and the seasons.

Summary of the Apparent Motion of the Stars From Syracuse, NY looking North From Syracuse, NY looking East From Syracuse, NY looking South Reference to.

Phases of the Moon Lab The Celestial Sphere Model One way the celestial sphere model is used explains positions in the sky as seen from YOUR position.

The Celestial Sphere (The sphere should really be rotating, not Earth)

Question of the Day What is the Shape of Earth’s Orbit?

Celestial Observations

Our Sky & Constellations

Aim: What are the apparent motions of the stars and planets?

Astronomy Motions of the Earth and Sun

The Celestial sphere.

1.5. Describing the Position of Objects in Space

Open up your laptops, go to MrHyatt.rocks, and do today’s bellwork

November 8,2010 Celestial Motions.

The Celestial sphere Essential Questions:

Stargazing Terminology

Astronomy – The study of the motions and properties of objects in space.

Mr. Ahearn Earth Science 2010

Open up your laptops, go to MrHyatt.rocks, and do today’s bellwork

Celestial Motions Chapter 2.

Focus: Latitude and Longitude: The Earth’s Coordinate System

Motions of Earth, Moon and Sun

Why Does the North Star interest us?

The Apparent Motions of Celestial Objects

Click me to see the “real deal”

Human Understanding of both Earth and Space has Changed Over Time

Celestial Motions Chapter 2.

Presentation transcript:

What Is Astronomy? Write this on a new sheet of looseleaf GOAL: Today you will learn how to describe the position of celestial objects. At the end of this lesson you will be able to: • Distinguish between apparent motion and real motion of celestial objects • Define azimuth, altitude, and zenith Write this on a new sheet of looseleaf

So what is a celestial object?

Celestial object: Any object that is visible in the sky, but is beyond Earth’s atmosphere. Examples?

Apparent motion vs. Real motion Celestial Objects appear to move in circular paths (arcs) that are centered on Polaris at a rate of 15⁰/hr Apparent motion More stars around Polaris

Star Trails

http://astro.unl.edu/naap/motion2/starpaths.html http://astro.unl.edu/naap/motion2/animations/ce_hc.html

Celestial sphere -imaginary surface of the sky

Describing positions of celestial objects

Express compass directions as degrees

Azimuth-Direction Altitude-Angle from horizon

Now draw this

Draw in an observer

Label the horizon and compass directions W S N E HORIZON

Label the Zenith Zenith W S N E HORIZON

Draw the position of Polaris for an observer in NYS

Draw the position of the Sun at sunrise

Draw the position of the Sun at sunset