You will need
- - compass;
- - protractor;
- - my weight.
In the simplest case, to determine the approximate position of the star on the horizon use the horizon. For example, the closest star to us – the Sun rises in the East and sets in the opposite direction in the West. At approximately midday the Sun is on the South side of the horizon. Therefore, sometimes it is enough to point in the direction of one side of the horizon to be able to determine the position of the desired object.
For a more accurate determination of the direction of the object, use the concept of azimuth. It is a expressed in degrees, the measure of the angle between the direction to the North and to the object whose position we want to determine.
Pick up the compass. Orient it correctly by aligning the zero division with the direction to the North. Now aim the sighting device of the compass to the point of the horizon on which the projected object in the sky. The angle between the North direction and on that point will be the azimuth by which to determine the position of the star relative to the sides of horizon.
Now enter another coordinate defining the height of a celestial body above the horizon. It is expressed as the angle from 0 to 90 degrees. So, if the object is right at the horizon line, its height equal to 0 degrees; if the star is directly overhead, the altitude equals 90 degrees (this point is called the Zenith).
To determine the height, use the normal student a protractor. To the zero point of the device, where it is supposed to be the center of the circle, attach a string with a small weight on the end. Turn the protractor so that the bottom plane it is on top. Align the protractor on a celestial object below the line of the Foundation was on the line of the light beam coming from the star to your eye.
Vertically located the thread with the load will indicate a specific angular value on the scale of the protractor. Subtract this value from 90 degrees, and you will receive the angle value defining the height of the object above the horizon. This parameter in conjunction with the Azimut will allow any person you will report these data to find in the heavens the object of interest.
Advice 2: How to determine your coordinates
Sometimes it is necessary to determine its location on a map of the world, including relatively precise geographical coordinates of the locality in which you are located or where you plan to go. What are the ways to determine their place in this world?
You will need
- topographic map of the area; a computer with Internet access
The easiest method involves the use of conventional topographic maps. The image areas on such a map has a scale and grid coordinates. At the outputs of lines of a grid near the frame, framing the map sheet, indicate the values of their rectangular coordinates.
The second method requires a computer and access to a worldwide network of Internet. The method allows to accurately determine geographic coordinates on a picture taken with an artificial Earth satellite.
Open Google Maps. Find a place on the map, the coordinates where you intend to install. The map can be moved around the computer screen by means of a manipulator or the corresponding buttons on the keyboard, while the apparent scale of objects will change according to your desire.
Press the right button of the manipulator on the desired point on the map. Select the menu item “What's here?”. On your map you will see a label (marker). Take a look at the top part of the window, and you will find that there were geographic coordinates of the searched location.
Similarly, you can use to locate the service "Yandex. Map. To find out the coordinates, click "Get info", on which is drawn a question mark and an arrow. The button is located in the upper left part of the map. Clicking on the map, you'll find that appears on the map marker. While in the search string will be the desired coordinates.
Here is another unusual way to find the location of the settlement. Many astrological services provide free service for determining the geographic coordinates of a large number of settlements. By entering a search string the name of the settlement, click "Search". Before you'll be the coordinate values corresponding to a town or village, with accuracy, usually to within a minute. The data format might look like this: St. Petersburg (Leningrad), Russia, Leningrad region, 59°55'N, 30°15'E.