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Part 1.
Reading the Stars in the Night Sky - How to Find Constellations
1 Humanity, looking at the stars
2 Why can't I find the constellation?
3 Constellations that change with the seasons
4 Find the best star of the season!
- Finding Arcturus in the Spring Constellation Boötes
- Finding Vega in the Summer Constellation Lyra
- Finding Fomalhaut in the Southern Pisces in Autumn
- Finding Sirius in Winter Canis Major
Find the bright stars representing the 5 constellations!
- Finding Regulus in Leo and Spica in Virgo in Spring
- Find Altair in Aquila and Deneb in Cygnus
- Find Antares in Scorpio in Summer
- Finding the summer constellation Hercules
- Finding Alpheratz in Andromeda in Autumn
- Finding Capella in Auriga and Aldebaran in Taurus in Winter
- Finding Procyon in Winter Canis Minor, Betelgeuse and Rigel in Orion
- Finding Pollux and Castor in the Winter Gemini
- Find the North Star in Ursa Minor
Use the meridian altitude of the 6 stars!
★ Check the constellation location

Part 2: Going to See the Sky: Where to Observe and What to Bring
1 Why can't I see stars well from my house?
2 Nights, a place to see the stars
- Six hundred horses on Cheongok Mountain in Pyeongchang, Gangwon-do
- Noeul Park, Sangam-dong, Mapo-gu, Seoul
- Naesan Seowon, Yeonggwang, Jeollanam-do
- Gyeonggi-do Gapyeong Hwaak Tunnel Ssamji Park
- Beotgogae, Geumwang-ri, Yangpyeong, Gyeonggi-do
- Parking lot at the summit of Jeoksangsan Mountain in Muju, Jeollabuk-do
- Parking lot of Samyanggyo Bridge, Gajisan Mountain, Miryang, Gyeongsangnam-do
3 A place to see the morning sun
4 Things to check before leaving
5 Things to Pack Before You Leave

Part 3: Recording the Movement of Stars: Astrophotography
1 An era in which anyone can record astronomical phenomena in detail
2 Camera Tips You Need to Know for Great Photos
- Difference between portrait and landscape photography: F-number
- Taking pictures of fast objects and faint stars: Exposure time (shutter speed)
- Moving objects in the dark: ISO sensitivity
- Exposure time limitations: tripod
3 Smartphones: Great Equipment for Astrophotography
- Focus on celestial bodies in the night sky with the focus lock function
- Using the brightness control function (ISO sensitivity control) of the smartphone camera
- Capture both bright and dark subjects with HDR function
4. Taking astrophotos with your smartphone
- Let's capture the night sky in everyday life! Night mode shooting without a tripod.
- Let's take pictures of the Milky Way and constellations! Long exposure photography using a tripod.
Let's take a picture of Saturn's rings! Astrophotography using a telescope
- Let's capture the vast night sky in a photo! Night panorama photography
Let's capture the movement of the stars in photos! Take photos of the day.

Part 4: Bringing the Sky Closer: Choosing and Using a Telescope
1. A tool that shows dim stars
2 The History and Future of Astronomical Telescopes
3 Types and principles of telescopes
4. Criteria for selecting observation equipment
- Choosing a telescope that suits your observation purpose
- Binoculars that provide mobility
- Essential equipment for easily finding stars: a mount and a tripod
5. Setting up a telescope
6 Deep-Sky Objects Visible Through Small Telescopes
- Deep-sky objects in spring constellations
- Deep-sky objects in summer constellations
- Deep-sky objects in autumn constellations
- Deep-sky objects in winter constellations
- Deep-sky objects in the northern sky

Part 5: Understanding the Sky: The Scientific Principles of Astronomical Phenomena
1 Astronomical Phenomena and Our Lives
2 Why celestial bodies appear that way
- Why can't we see stars during the day?
- Why does the moon appear bigger above the horizon?
- Will the Altair and the Weaver Girl get closer on the seventh day of the seventh lunar month?
- Why does the crescent moon look like a fingernail?
- Why does the crescent moon only shine half as brightly?
- Do planets sometimes look like crescent moons?
- Why does the sun keep following me?
3 Changes caused by the movement of celestial bodies
- Does the sun always rise in the east?
- Does the moon look the same every time it is in the same position?
- When and where does the moon rise?
- What is the identity of the star wandering among the stars?
- Are the morning star and the morning star the same celestial body?
- What celestial body passes in front of the sun during a solar eclipse?
- Why does the full moon suddenly disappear?
- How often do planetary encounters occur?
4 Movement of celestial bodies and time
- How long is a day?
- At what time is the sundial most accurate?
- Why is there 7 days in a week?
- Why can't I see my birth star sign on my birthday?
- What was the calendar made based on?
Calculating the distance between 5 celestial bodies and the Earth
-Measuring parallax to determine the distance to a star
- Calculate distance using apparent magnitude and absolute magnitude
- Measuring distances to extragalactic galaxies using supernova explosions

(Appendix) Science is not about asserting, but proving - Heliocentrism and Geocentrism
Ptolemy's geocentrism and Copernicus' heliocentrism
Why did Tycho Brahe, the greatest observational astronomer, reject the heliocentric theory?
Galileo's observation of Venus changed the center of the world.

Photo copyright

Even if you can't see the constellations, you can still see the stars.
Find the constellations yourself with photos and maps!

Even if you look up at the sky with the intention of finding constellations, they are not easily visible.
I clearly have the constellation shape in my head, but I can't quite make out what's what.
The distorted H of Hercules is nowhere to be seen, and the Big Dipper's ladle shape is broken off in the middle of the handle.
This is because the sky is bright and the dark stars are not visible, or some of the constellations are obscured by trees or buildings.
If you go to a place where you can see the stars well, things might be a little better, but if there are too many stars, it becomes difficult to find them.
So this book teaches you how to find stars by their position and brightness, not by their constellation shape.

The brightest star in the sky serves as a landmark, visible from both the countryside and the city.
Stars always rise and set in a regular pattern, so if you know the pattern, you can easily find bright stars.
When I look up in the middle of a midsummer night, the brightest star above my head is Vega, and the brightest star in the southernmost constellation in the winter is Sirius.
Once you find the brightest star, you can figure out where the rest of the stars are.
To the southeast of Vega is Altair in the constellation Aquila, and to the east is Deneb in the constellation Cygnus.
Once you know these rules, finding constellations becomes much easier.

You can also practice star finding using the constellation map included separately from the photos in the book.
The included photos are all of Korea's night sky recorded by stargazers, so they are not much different from the night sky you actually see at an observatory.
To provide a more vivid sense of the scene, no other elements other than the direction were displayed in the main photo.
Readers can follow the descriptions to identify stars in the photos and compare them to star maps to get an idea of ​​what the night sky actually looks like.
The confirmation page at the back of the chapter contains a photo of the constellation lines drawn to help you check that you have found the correct star.

The appendix constellation map was produced as a separate poster so that it can be easily carried around when going out for stargazing.
All major stars introduced in the book and constellations visible from our country are marked.
It also includes locations of clusters, nebulae, and galaxies that are easy for beginners to find.
If you practice finding stars using books and star maps before actually observing the stars, the night sky will become more familiar.



Feel the universe in a star-filled sky
Take pictures of the stars with your smartphone and telescope at famous observation spots across the country!

You can always see stars in the city, but if you still want to see more stars, it's a good idea to plan a trip.
For those who want to get out of the city and enjoy the night sky, we've compiled a list of observation spots across the country.
This book introduces seven observation sites frequently visited by stargazers, including Yukbaekmajigi in Pyeongchang, Gangwon-do, Naesan Seowon in Yeonggwang, Jeollanam-do, and the parking lot of Samyanggyo Bridge in Gajisan, Miryang, Gyeongsangnam-do. It would be a fun experience to visit these places with this book in hand.

If you want to record the beautiful sky you saw today, turn on your smartphone.
You might think you need a high-end camera like a DSLR to take good astrophotos, but the best equipment for beginners is your smartphone.
With just a little bit of practice in setting up, you can capture not only the appearance of the moon but also the movement of stars around the North Star using your smartphone.
Even with a small telescope, you can capture photos of Saturn's rings and even craters on the moon.

If you want to look at the sky a little more seriously, it would be a good idea to get a telescope that suits your purpose.
From types of telescopes to criteria for selecting a telescope that suits the situation and subject of observation, we have included basic telescope knowledge for beginners.
We also introduce clusters, nebulae, and galaxies that are good to look for with a telescope, so if you have a telescope, you can see deeper into space.

When observing the sky, you wonder why the moon looks that way and why the planets move that way.
The authors, who have been teaching astronomy for over a decade, have compiled the most frequently asked questions in educational settings to answer such questions.
It explains, using illustrations and photographs, why the dark part of the moon that does not receive sunlight is visible, and why the location of the sunrise changes slightly.
We can also learn about how astronomical observations changed our perspective on the universe through the story of the geocentric versus heliocentric theory debate.
The sky is a window to the universe.
Since the beginning of civilization, mankind has always looked up to the sky, and science has continued to advance by discovering the rules of the sky.
If we can see what the sky looks like today and directly feel and understand its movements, we will be one step closer to understanding the universe.