PR“You are Galileo!” Project

Let’s Observe the Moon! (for 15x)

★YO2011★

U A REEC TGAE O!

OJLLIObservation and Sketch
Name

In 1906, the Italian Scientist Galileo Galilei became thefirst person to make an astronomical observation using atelescope. He made a great discovery when he wasobserving the Moon. What was his great discovery? Let’s
use our telescope and experience his great discovery!

AddressAge■Let’s Observe and draw a sketch of the Moon. If possible, draw a couple of sketches on different days.

ExampleDateweather: clear

Site

18:30

Month 2 Day 24

Mitaka-shi,Osawa, Japan

Aperture of Telescope

4 cm

Magnification*

15 x*Magnification of a telescope can be calculated by dividing the focal length of the eye piece with the focal length of the telescope.

Draw a sketch of the whole moon.

ExampleMake a detailed
sketch of what youfind interesting→Day 1
weather:

Date
Site:

MonthDay

Aperture of Telescopecm

Magnificationx© “You are Galileo!” Project“You are Galileo!” Project

Observation and Sketch

Day 2weather:

Day 3
weather:

Date

Let’s Observe the Moon! (for 15x):MonthDay

Site

DateSite:MonthDay

Aperture of Telescope

cmMagnificationx

Aperture of Telescopecm

Magnificationx▪Write down What you have noticed through Observation and Sketch, and anything peculiar you found© “You are Galileo!” Project

PR“You are Galileo” Project

Let’s Observe the Moon!

EC T2011★

U A★YO RE GA

E O!

OJLLI

Post Observation StudyName

From your own observation and Galileo’sobservations, you can see that the surface of theMoon is uneven and rough and that the apparent
shape of the Moon changes on different days.

A copy of Galileo’s sketches of the Moon→■Now, let’s look at the map and find the place you decided to make a detailed sketch of. What kind ofname does it have?
*You can download a map of the Moon from the “You are Galileo!” web site. Also, there is a map of
the Moon in the guidebook attached to the telescopes by Hoshi no Techo, Inc.
*The map shows around the time of full moon. When you watch the moon in the evening, the left
side of the map (East side of the Moon) is bright. When you watch the moon at dawn, the right sideof the map (West of the Moon) is bright. You can see an inverted image in the field of view of thetelescope.
■There are craters, maria and mountain ranges on the Moon. Did you find them in your observationand sketches? Mark the ones you’ve noticed.
□Craters: Dents on the surface of the Moon. Most are round.
□Maria(seas), lacus(lake), sinus(bay): Sections that look dark on the Moon. Though they are called
the sea, they are covered with rocks and have no water. They
don’t have many craters and are flat.
□Mountain range: Sections were mountain form a line just like mountain ranges on Earth.

© “You are Galileo!” Project“You are Galileo” Project
Let’s Observe the Moon!

Post Observation Study

Next, let’s consider why the phases of the moon changes. Thisis because the relative positions of the Moon, Sun and Earthchanges. The Moon rotates around the Earth like the figure
below. Draw how the Moon looks like from the Earth.
Light fromthe Sun
When you look at theMoon through thetelescope, it apears
flipped like this.

Orbit of the MoonMoonEarth→You can see that the shape changes like they do in your sketches.

■ Let’s write down what you learned with this observation and what you want to learn more about.

Did you experience Galileo’s Discovery?
© “You are Galileo!” Project