5. How to Enjoy Astronomical Observation

    When we enjoy the astronomical observation, there is no need to have advanced equipment there. Only you have to have is a curiosity at least. But if you're have the equipment, you should take advantage of it, and if you want to get some equipment from now, you should know what you need to own. 

Planisphere.

    If you want to enjoy the night sky empty-handed, you just look up at the sky. I think you should care about the place might be good for you. There is no light source around, the air is clear, there is no danger. You should try to find such a place. Even if there is not any knowledge with you, you will come across a beautiful sky. Seeing the meteor shower is one of the most enjoyable observation. 

    If you know the constellations, fun of astronomical observations spread further. Smartphone apps that can see roughly things in the night sky exists. If you did not have a smart phone, you should use a planisphere. PC software that has such a feature also present. They will willing to guide you. They tells us that starry sky you see that due to the time and season. 

Telescope of Newton.

    If you have a telescope or binoculars, you can see the night sky over to use like a microscope. That what was a small stain turns to galaxies and nebulae and star clusters is impressive. If it is the cheapest telescope, the price's less ten thousand yen. It is only two kinds of astronomical telescope and large separation. They are the refractive and reflective. The former use the mirror. You can buy it relatively cheap. The latter use the lens. This can make a thin tube. So this is hardly affected by the outside air. If you buy a telescope, you should understand the advantages and disadvantages of each type. 

    There is a celestial body that does not appear to be darker in the telescope. But it may be possible to make the subject look into the camera. Let put the long exposure time of the camera towards the sky . You can do install it in astronomical telescope. The camera produces an image by collecting a small light. You can observe the more distant of the universe. 

We are able to astronomical observation in a variety of ways like this. Degree of difficulty increases as become item below. But you can easily do it if you think you are trying to do. You may be observed at their own pace. I want you to try If you're so inclined.

The sources: http://homepage2.nifty.com/turupura/observe/menu.htm
http://matome.naver.jp/odai/2136435653503464601
The pictures:
http://image1.shopserve.jp/otokomonoya.com/pic-labo/llimg/newton2006_01.jpg
http://www.astroarts.jp/alacarte/2013/201312/image/starchart.jpg

4. About Outer Space

    I will introduce the outside of the solar system now. What we can observe is a small part of the whole universe. It is not less than ten percent of the whole universe.

    Earth  belong to the solar system. There are many other organizations such as the solar system in universe. they are gathered and form a giant spiral or disk. This is the galaxy. We can observe from inside the galaxy which we belong. It is a so-called Milky Way. Plenty galaxies are also gathered, forming a cluster of galaxies. They are also gathered, they will form a supercluster. On the whole observable universe, celestial bodies are distributed in the form, such as a foam. But distance that we can observe is in the range of 93 billion light-years in diameter approximately. Because IDM distant is expanding faster than the speed of light. It is that to so, where light does not reach is invisible for us.  
    

Big two are Rigel and Aldebaran, other are Bellatrix, Algol B, Sun.

    There are a variety of celestial objects in the universe. Planets and satellites, and the like star. Human grow older. Star also grow older. Protostar glow in the only potential energy. This is a baby star. Main-sequence stars glow by the nuclear fusion. Sun is also included in this. Star most of the universe is a main-sequence stars. Star that is being run out of nuclear fusion energy becomes red giant. Star has a wide variety of end. Small star just go cold and dark. Huge star cause supernova explosion. Neutron star remain after, or stars that are too large become a black hole. When a star dies, it will release the material of the next star. We observed it as a nebula. Stars are born or dies somewhere at any time in the universe. 
    

If we see the Black hole, it become like this.

    Celestial objects with various properties exist in the universe. Neutron star is a celestial body of small and rotates at high speed. Sometimes energy it emits will be regular as a pulse signal. In that case, We call the pulsar neutron star. Neutron star with a strong magnetic field is called a magnetar neutron star. These stars also known that the density is high. It is said that its density is also one hundred trillion times that of the sun. When the star is no longer withstand the mighty gravity of their own, black hole is born. This star has the location and density gravity is infinite. Be stuck even light is also tied to the gravity of this star. So we can not see this star. 

    By the way, look at the night sky, we can say that star is bright. In most cases, they are close to the Earth relatively. I want to see the stars are in far away.


The sources: 
http://en.wikipedia.org/wiki/Universe
http://4d2u.nao.ac.jp/html/program/mitaka/index.html
The pictures:
http://upload.wikimedia.org/wikipedia/commons/1/11/1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.pnghttp://www.spacetimetravel.org/galerie/sl218.jpg
http://www.youtube.com/watch?v=MzVduP6ud9Y