Although you may not believe last week I received first telescope. All a doctor of astronomy and I had not yet purchased any telescope in my life! What I call me astronomer?
Well, that does not mean that no one ever observed by telescope, but simply that I have observed with telescopes that were not mine. If any of you want to look through a telescope and do not want to buy one, it is very easy. To go to the nearest astronomical insurance group that is with a lot of friendly people who organize trips to the countryside at night to watch the stars, and they have a telescope.
Finally I decided and I bought a telescope. But how high is only 5 cm in diameter. This is a Galileoscope , a telescope set up to mark the international year of astronomy 2009, simulating the telescope that Galileo used for the first time to observe the satellites of Jupiter, the moon. . . And it costs only $ 30! It is a very good attempt to make everyone who wants to do astronomy as an excuse not put the price of the telescopes for not having one at home (as I did).
Galileoscope image
The time to get my Galileoscope made me remember when I decided to be an astronomer. How exciting! That is comforting. If after all this time I can still feel it with astronomy, it means that I have the wrong profession.
Galileoscope you have to assemble yourself by following instructions in English as if it were a piece of furniture from Ikea. It's fun and also take the opportunity to see the inside parts that compose your telescope.
A friend of mine asked for another like me and when he realized he mounted an astronomical telescope inverts the image (what you see up and down and vice versa). To observe stars that does not matter, but if you intend to use your telescope to spy on the girl next door you can feel cheated when you realize later that you see cabezabajo (see above face down and not used to dropping the skirt for being backward , since gravity is still is!). Basically
refractor telescope, like Galileo, consists of two sets of lenses. One large ( objective) and a smaller one where you put the eye (ocular ). The distance between the two lenses is varied until the image is focused.
The telescope focuses light passing through the ocular lens and eye towards the
When I said that my telescope was only 5 cm in diameter, many of you will have stayed the same . Contrary to what many people think, what matters in a telescope are the increases (this is determined by how are the lenses of which we spoke) but by the diameter. A telescope is an instrument that captures all the light that enters and the concentration in the eye (you can imagine, then, what happens if instead of seeing the faint stars of the night look at the bright sun of the day. NEVER ye seek to Sun through a telescope without proper protection). The more I have my telescope diameter, more light from the stars comes to my eye and, thus, can see things more and more weak. Ie I see more stars than the naked eye and the brightest.
The stars are tiny. For many gains have my telescope will continue to see the stars as points with the difference that fewer stars ever see around them because I'm isolating the star more and more to be greater. And what I also see the effects of increased turbulence in the Earth's atmosphere, so let's see a clear image to see blurred and fluctuating. To increase or decrease a telescope increases just need to change lenses that compose. It is easier to change the small lens (the eye), so a telescope usually has several different eyepieces to change increases without changing the amount of light it receives.
first thing I checked when setting up my small telescope I needed something with a stable support point to conditions. When I saw try it without support I wanted to observe the stars were passing by the image of the telescope but that were at once because I did not have enough pulse. So as important as the telescope is to have a good foothold. A tripod mount. Supported and stable once the next step is to aim properly. Galileoscope I bought has a simple sight, as if a gun is involved. Other larger telescopes have a small telescope attached to the larger (search ) without many gains, to learn to place the object we want to observe more easily and once centered in the finder to look through the eyepiece.
As a professor of observational astronomy, the star was asked "And how much a telescope? . " Well, you see that cost me the same as a perfume (yes, last year my wife ran out the perfume of every Christmas so I could buy the damn Galileoscope). And the truth is that value for money is almost endless. I'm eager to see the moon again tonight.
I talked all the time a telescope as a set of lenses, but in fact the most common telescopes today are composed of mirror telescopes (devised by Newton), no lenses, because they take less. You see we're talking about Galileo and Newton, astronomers no unknown named Jack and Huey. The creation an instrument to better see the stars need a good dose of wit and intelligence and not surprisingly they were geniuses who will take care to approach the stars in our eyes.
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