How to make a telescope, how to make a telescope

Hello, homemade telescope, in fact, in addition to the Galileo structure, there is another one, called the Kepler structure:

One is the Kepler structure: it is two magnifying glasses, the objective lens is small magnification, and the eyepiece is large magnification. This structure has a wide field of view, the multiples are easy to size, and the materials are easy to find. But if you don't have a prism, then it's like it's upside down.

The other is what you call the Galilean structure: a magnifying glass, a small multiple, is the objective lens. A concave lens, with a large power, is an eyepiece. The advantages are like positive. Disadvantages – The advantages of the above methods correspond to each other.

The Galileo structure is actually obsolete for now, and is only used on toy telescopes, and the material is not particularly easy to find (there are many more convex lenses than concave lenses in life, right?). So if you're just looking at astronomy, you're going to make an astronomical telescope (you don't care about inverted images), then you can make a Kepler structure.

The important thing you need to know is that the flatter the objective lens and the more concave (or convex) the eyepiece, the greater the magnification of the telescope. However, it is not recommended to be very large.

Drawings, you don't need drawings, because even if you are given a drawing, you can't find the right lens, so what you should do is to tell you what kind of material you are looking for, and then, according to this direction, look for the same, according to the lens you find, you will naturally decide the size and parameters of the telescope in all aspects.

Of course, the two I mentioned are just the simplest models, and the real regular telescope is still more complicated, not only the material is optical glass, but also the lens is also very complex.

You can learn about the structure of the telescope's lenses. - The so-called "convex lens" in it - in fact, in the real production, it uses a complex design of lens groups - as if you know that the lens of the camera is a convex lens - the real professional camera lens is a complex lens group inside. ）

Finally, just experience the fun of hands-on, don't spend too much energy, you have also seen, the real telescope is very responsible for the material, or the lens structure, and the accuracy, those lens groups, the optical glass of each lens, are not the same, are correspondingly specially designed, far from the appearance of so simple. You can play around on your own and have hands-on fun, but don't expect too much from the results.

The Kepler structure is more made, the objective lens is about 1000 mm with a longer focal length, and the eyepiece is 10 mm, which is a simple astronomical telescope with 100 times magnification. (The eyepiece is positioned at the focal length of the objective).

Polished into a circle, just take a roll of thick paper.

If you want to make a telescope out of these two things, I advise you not to make it, even if you make it, the image will be very poor. It's not as good as an astronomical software stellarium

It can simulate a 100-300 times astronomical telescope to see the starry sky, and it can also adjust the time address so that you can see space at different times and in different places.

The practice regarding telescopes is as follows:1. We first have to prepare a concave lens and convex lens, which can be bought in a stationery store.

2. Let's find another paper slip, and the paper tube left in the middle can be used up after the roll paper is usually finished.

3. The next step is the installation of the lens, the convex lens is equivalent to the telescope eyepiece, which is installed at the search key closest to our eyes.

4. The concave lens is installed at the far end of the paper slip, and we can adjust the size of the observation object by the distance between the two lenses, the schematic diagram.

As follows. <>

5. Once the self-made telescope is done, we can explore the unknown world with our children.

A telescope is an optical instrument that uses lenses or mirrors and other optical devices to observe distant objects. The light refracted through the lens or reflected by the concave mirror causes it to enter the small hole and converge to the image acrosis, and then it is seen through a magnifying eyepiece. Also known as "clairvoyant mirror".

1. Take two magnifying glasses and a newspaper.

2. Take the larger magnifying glass and place it between you and the newspaper. At this point, you can see that the handwriting on the newspaper is blurred.

3. Take the second magnifying glass and place it between your eyes and the first magnifying glass. Ruler such as.

4. Move the second magnifying glass back and forth until you can clearly see the words on the newspaper. You will notice that the words in the newspaper are enlarged and upside down.

5. Ask a friend to measure and record the distance between the two magnifying glasses at this time.

6. Cut a groove one inch from the front end of the paper tube. Be careful not to cut and the groove should be just the right size to fit into a large magnifying glass.

7. According to the distance between the two magnifying glasses that your friend just measured, cut out a second groove on the paper tube to place the second magnifying glass.

8. After placing the two magnifying glasses (the big one in the front and the small one in the back), fix them with tape.

9. Keep the length of inches (1 2cm) behind the small magnifying glass, and cut off the excess part left on the paper tube.

10. Use your homemade telescope to read the newspaper and check if it can be used properly. To make the image clearer, you may need to slightly adjust the distance between the two magnifying glasses.

Here's how to make a telescope:

1. Prepare two rectangular cartons, one for convex lenses and one for concave lenses, remember to leave a place for concave and convex lenses in the two openings.

2. Glue the two cartons together with double-sided tape, and open the two openings where the lens is to be placed.

<>4. Glue two barrels with lenses together.

Doing handicrafts can make people more active and have fun in life. Manual activities will naturally bring a rich story environment to create, in such an environment, children are more likely to resolve all kinds of bad emotions, each manual activity is equivalent to a small-scale process to achieve the ideal, the process is full of various factors, so that children experience a rich scene, bring an optimistic attitude to life.

Handicraft activities enrich children's emotional experience and improve children's communication skills. Whether it is a handicraft alone, a parent-child handicraft, or a collective handicraft of children, there will be no lack of role communication, and in the process, children will naturally imagine the relationship between the roles and enrich the interpersonal experience. The exchange of handmade small gifts more directly increases the emotional connection between each other.

Craft activities can develop children's observational skills, creativity and imagination. In the process of handicraft, children will gradually develop the habit of carefully observing the things around them, and grasp the characteristics of things more and more accurately. Children's handicraft activities from imitation to creation are the process of continuous improvement of creativity.

Materials: one convex lens lens (i.e., presbyopia), one concave lens lens (i.e., magnifying glass), a pair of small scissors, a roll of tape, a roll of double-sided tape, a few sheets of white paper, and some foam bags.

1. Cut the white paper into two sheets of different sizes.

2. Paste the longer side of the white paper with double-sided tape, and connect the two lenses with the paper tube respectively.

3. Put the paper tube equipped with the concave lens into the paper tube equipped with the convex lens, and the simple telescope will be made in three simple steps.

The specific production method is as follows:

1. Prepare materials: large convex lens, that is, the objective lens of the telescope, the small convex lens, that is, the eyepiece, flashlight, thick cardboard, glue, ruler of the telescope;

2. Fix the large convex lens, place a piece of paper behind the lens, illuminate the lens with a flashlight, and move the piece of paper to observe the focus of the lens;

3. Replace the large convex lens with a small convex lens to observe the focal point of the lens;

4. Take the minimum grid of the self-made telescope ** ruler, the minimum grid is centimeters, move the distance between the ruler and the telescope, and observe the distance of the grid line of the farthest recognizable ruler.

At this point, the simple telescope is finished.

The specific production method is as follows:

1. Preparation materials: large convex lens, that is, the objective lens of the telescope, small convex lens, that is, the eyepiece of the telescope, the flashlight hall hand, thick cardboard, glue, ruler;

2. Fix the large convex lens, place a piece of paper behind the lens, illuminate the lens with a flashlight, and move the piece of paper to observe the focus of the lens;

3. Replace the large convex lens with a small convex lens to observe the focal point of the lens;

4. Take the minimum grid of the self-made telescope ** ruler, the minimum grid is the centimeter Zen beam, move the distance between the ruler and the telescope, and observe the distance of the grid line of the farthest recognizable ruler.

At this point, the simple telescope is finished.