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«Boy Scouts of America ASTRONOMY Merit Badge Guide Table of Contents I. Introduction 3 II. Tools of the Astronomer 3 III. Using Constellation ...»

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Boy Scouts of America

ASTRONOMY Merit Badge Guide

Table of Contents

I. Introduction 3

II. Tools of the Astronomer 3

III. Using Constellation Adventure 4

Constellation Adventure

Star Charts

Under a Starry Night Field Guide

IV. The Astronomy Merit Badge 4

Requirement 1 - Observing Tips & Safe Solar Observing 4

Requirement 2 - Light & Air Pollution 5 Requirement 3 - Binoculars & Telescopes 5 Requirement 4 - Stars, Constellations & the Milky Way 6 Requirement 5 – Planets 7 Requirement 6 – Observing Planets 7 Requirement 7 - Moon 7 Requirement 8 – Sun & Star Colors 8 Requirement 9 – Planetarium, Observatory & Star Party 9 Requirement 10 - Careers 10 V. Summary 11 I. Introduction Astronomy is one of the oldest sciences. In ancient cultures, an understanding of astronomy was needed to predict the coming of the seasons and when to plant and harvest crops. At sea, sailors used the position of objects in the sky to track where they were on Earth. Before the invention of clocks, people used the position of the Sun to tell the time.

Astronomy is also a young science. In the last decades, we have learned a great deal about the universe we live in and are part of. From the size and age of the universe to exotic objects such as black holes.

The sky is just as fascinating to explore as it was in ancient times. But how many of us can tell the difference between a star and a planet? Or find the Big Dipper and north star? In the modern world we’ve lost the connection with the sky. But by earning the astronomy merit badge you can reconnect with the sky and become an expert backyard astronomer. It’s fun, especially with the help of Starry Night Constellation Adventure.

The astronomy merit badge requires that you learn something of how the sky works. Starry Night Constellation Adventure can speed you to success with helpful tips and information. You’ll be able to plan your sky observations to get the most out of them. Starry Night Constellation Adventure lets you be the scientist. You can ask questions, plan observations and test your ideas. When you’re done, the sky will be as familiar to you as your own neighborhood.

Acquiring your merit badge requires some effort. The experience will be more enjoyable if you listen to the suggestions provided by your counselor. Your counselor is familiar with the many resources available in Starry Night Constellation Adventure and how to best apply them to meet your astronomy merit badge requirements.

II. Tools of the Astronomer Astronomers always start their research by learning as much as possible about their subject ahead of time. This means you’ll need a good book to get started. You’ll need your eyes and your brain, a pair of binoculars and maybe a telescope. You’ll need a notebook to keep track of your observations and to record your measurements.

When you travel to new places, it helps to have a map. In this case, sky charts are what you need. Another useful item is a red-light flashlight. It lets you read your sky chart at night without destroying your night vision.

Knowing ahead of time what you can see in the sky is a real time-saver. Before there were artificial lights, people saw the stars and learned the Moon’s phases at a young age. Now it’s hard to see the stars through all that light at night. This is where computer programs like Starry Night Constellation Adventure can help. They let you predict what you will see tonight, next week, next month, or next year. This means you can plan your observations ahead of time.

Starry Night Constellation Adventure is the perfect helper for your astronomy merit badge. It is sky simulation software that lets you test your ideas, plan your observations, and print your own sky charts.

It will help you find and identify stars, constellations, planets and more. It comes with a field guide to the night sky and a handy red-light flashlight. It’s a complete sky watcher’s package that can take you beyond the basic requirements of your astronomy merit badge.

III. Using Constellation Adventure Using the software is easy. The Quick Start Guide included with the package will get you up and running in minutes. You can control the Starry Night Constellation Adventure screen with the menus and toolbar buttons at the top of the screen. To learn all about the program controls, click on the Starry Night Basics chapter in the SkyGuide pane of Starry Night Constellation Adventure. Then go ahead and set the sky for where and when you like!

Starry Night Constellation Adventure gives you even more resources:

´Starry Night Constellation Adventure: Beside the main window is the SkyGuide pane.

SkyGuide contains software tutorials and interactive guided tours on many astronomy topics. You’ll find the answers to a lot of your badge requirements in SkyGuide, plus a whole lot more.

´Star Charts: Starry Night Constellation Adventure lets you print your own star charts. You can use the software to find when and where certain stars, constellations and planets will appear in the sky. Then you can print customized charts for your location and for the best time to view your chosen objects. SkyGuide has tips and directions on how to make star charts in the Starry Night Basics section.

´Under a Starry Night Field Guide: Starry Night Constellation Adventure comes with a 48page astronomy field guide. It’s divided into sections on finding your way around the sky, measuring the sky, stars and constellations, the Moon and planets, eclipses, telescopes and more. It even has seasonal sky maps to help you find your place under the stars. Take it out under the stars with you when you go observing.

IV. The Astronomy Merit Badge Requirements Requirement 1: Observing Tips & Safe Solar Observing Describe the proper clothing and other precautions for safely making observations at night and in cold weather. Tell how to safely observe the Sun, objects near the Sun, and the Moon.

Always dress for the weather. It can get very cold at night so be prepared to bundle up with extra layers of clothing. A warm hat, mitts and sturdy insulated boots are a must. A thermos of hot soup or cocoa can also help keep you warm.

The Sun’s rays can burn your retina and cause permanent eye damage. Never look directly at the Sun or observe the Sun with binoculars or a telescope without a 100% safe solar filter and adult supervision. Small green-glass Sun filters that attach to the eyepiece of a telescope can shatter from heat build-up in the telescope. They are not safe. Never use them. Small Sun filters supplied with department store telescopes are not safe and should never be used to view the Sun. If your eyes are accidentally exposed to unfiltered sunlight through binoculars or a telescope, seek immediate medical attention.

Safe solar filters are usually made of specially coated optical glass or Mylar film and can be purchased from specialty shops such as Orion Telescopes and Binoculars – www.oriontelescopes.

com. The Sun can also be safely observed using the pinhole projection technique.

Observing objects in the sky that appear close to the Sun can only be safely done once the Sun is below the horizon.

Solar Resources Daily Sun Images from the SOHO Space Observatory sohowww.nascom.nasa.gov Space Weather spaceweather.com Requirement 2: Light and Air Pollution Explain what light pollution is and how it and air pollution affect astronomy.

Light pollution is the glow of upward-directed artificial light. It brightens the night sky and blocks the light of stars and other celestial objects. Air pollution is a mixture of different particles of gas, dust, smoke and smog in the air that comes from human activity. It makes the air less transparent so it is harder to see faint stars in the nighttime sky.

Light Pollution Resources Dark Sky Association (IDA) www.darksky.org Clear Sky Clock cleardarksky.com/csk/ Requirement 3: Binoculars & Telescopes

With the aid of diagrams (or real telescopes if available), do each of the following:

A) Explain why binoculars and telescopes are important astronomical tools. Demonstrate or explain how these tools are used.

B) Describe the similarities and differences of several types of astronomical telescopes.

C) Explain the purposes of at least three instruments use with astronomical telescopes.

Chapter 4 and 5 of the Under a Starry Night field guide tells you about binoculars and telescopes.

You’ll find comparisons, user tips and what to expect when looking through each of these instruments.

Most telescopes are supplied with a few extra pieces of equipment. Aiming devices and “finder scopes” help you find objects in the sky. Motors can drive the telescope so it tracks the motion of the sky as you observe. Different eyepieces provide varying magnification. Many telescopes can be fitted with adaptors that allow you to attach different kinds of cameras to the telescope so you can photograph what you see.

SkyGuide has information and lists of objects suitable for viewing with binoculars. Click on Guided Tours Quick find Objects for binoculars in the SkyGuide pane.

Requirement 4: Stars, Constellations & the Milky Way

A) Identify in the sky at least 10 constellations, at least four of which are in the Zodiac.

B) Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter.

C) Make two sketches of the Big Dipper. In one sketch, show the Big Dipper’s orientation in the early evening sky. In another sketch, show its position several hours later. In both sketches, show the North Star and the horizon. Record the date and time each sketch was made.

D) Explain what we see when we look at the Milky Way.

Chapter 1 and 2 in the Under a Starry Night field guide are full of tips on how to find your way around the sky. Chapter 3 tells you about constellations and using star maps. Use them along with the Starry Night Constellation Adventure software and you will be finding and identifying stars and

constellations with ease. Explore these chapter sections in SkyGuide to locate stars and constellations:

Guided tours Quick find The stars Guided tours Quick find The constellations Guided tours Quick find The constellations The Zodiac Starry Night Constellation Adventure also comes with a Dipper Clock. The Dipper Clock is a fun and easy way to tell time by looking at the Big Dipper. Or you can use it to predict where you will see the Big Dipper in the sky at any time of night and at any time of the year. You can also use the software to do the same thing and then compare results.

–  –  –

The Stars and Beyond section of chapter 5 in Under a Starry Night will introduce you to galaxies and

the Milky Way. More about the Milky Way can be found in the following SkyGuide chapter:

Guided Tours Our solar system, the stars and galaxies Our Galaxy Requirement 5: Planets

A) List the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why.

B) Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the next 12 months, then compile this information in the form of a chart or table. Update your chart monthly to show whether each planet will be visible during the early morning or in the evening sky.

Chapters 3, 4 and 5 in the Under a Starry Night field guide are your planet primers. This is where you can find out how a planet’s position in the solar system affects how it looks to us on Earth. You can use Starry Night Constellation Adventure software to find planets in the sky and to track their motion in

the sky over time. Find in-depth planet tutorials by clicking on these SkyGuide chapters:

Guided tours Quick find The planets Guided tours Our Solar system, the stars and galaxies Planets Requirement 6: Observing Planets At approximately weekly intervals, sketch the position of Venus, Mars or Jupiter in relation to the stars. Do this for at least four weeks and at the same time of night. On your sketch, record the date and time next to the planet’s position. Use your sketch to explain how planets move.

The Way Out Wanderers section in Chapter 3 of the Under a Starry Night field guide will help you figure out planet motions. With Starry Night Constellation Adventure software you can speed up time and watch days, weeks or months of planetary motion in just minutes! It will help you plan your observing and make this part of your merit badge simple. More information and animations can be

found in the following SkyGuide chapter:

Guided tours Our Solar system, the stars and galaxies Planets From here you can explore each of the planets in great detail.

Requirement 7: Moon

A) Sketch the face of the moon and indicate at least five seas and five craters. Label these landmarks.

B) Sketch the phase and the daily position of the Moon at the same hour and place, for a week.

Include landmarks on the horizon such as hills, trees, and buildings. Explain the changes you observe.

C) List the factors that keep the Moon in orbit around the Earth.

D) With the aid of diagrams, explain the relative positions of the Sun, Earth, and the Moon at the times of lunar and solar eclipses, and at the times of new, first-quarter, full, and lastquarter phases of the moon.

You can find everything you need to know about the Moon in different sections of chapters 3 and 4 in the Under a Starry Night field guide. You’ll even find a Moon map that shows the main features on the Moon. In SkyGuide you’ll learn how gravity affects the Earth and Moon. Not only does it raise tides on our oceans, but it also slows down the rotation of both Earth and Moon. Click on Guided tours Our Solar system, the stars and galaxies The Moon The Moon’s effect on Earth to discover more. You can use Starry Night Constellation Adventure software to observe the changing phases of the Moon, to determine its phases, and to see how moonrise and moonset times change through the month.

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