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A simple Galilean telescope consists of a plano convex lens for the objective (front) and a plano concave for the eyepiece. An easy way to make one is to find the optics (lenses) first. You'll need to determine the focal length for the objective, as this will give you an idea of how long the tube needs to be. Once you've obtained your optics, you'll need to make the tube. The simplest method is to simply use two cardboard tubes, one that slides inside the other. The larger tube will hold the objective lens. Make sure that the flat surface of the objective is to the inside of the tube. There are several ways you can fix this into place, such as making cardboard rings or slightly smaller tubes ahead and behind the lens. Next, you'll need to mount the eyepiece into the second "focuser" tube. Again, make sure that the flat side of the lens is facing into the tube, and again you can use the same method used to mount the objective. Once both tubes are finished, you can slide the focuser tube into the main tube. You may need to decrease the inner diameter of the main tube so that the focuser does not sit loose. You can use more cardboard for this, and even felt for an inner layer to help the focuser move. Remember, as with all telescopes, basic safety; never look at the Sun.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoA very simple, but effective telescope is the Dobsonian Telescope. It is also called the "Sidewalk Telescope" to stress the idea that it is easy to build.
It is made using boards for the mount and plastic sewer pipes and Plumbing pieces for the eyepiece. It even has instructions on how to grind your own lenses and mirrors.
See the link below.
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How much would it cost to build a telescope?
the hubble space telescope cost 1.5 million dollars
How did Edwin build the Hubble Telescope?
He didn't. Edwin Hubble died in 1953. The telescope was named in honour of him.
Did Edwin hubble build the hubble telescope?
He didn't. Edwin Hubble died in 1953. The telescope was named in honour of him.
Who was the first person to build the telescope?
Hans Lippershey from Germany
What did William Herschel build?
He built a telescope. Read about it. It is interesting.
Does salt use conventional lenses like other telescope?
yes i think it does because it is a refracting lens telescope like the telescope build in Yerkes observatory in 1671 .
What advantage do space telescope have over earth based telescope?
not affected by earth's atmosphere
How long did it take to build the Hubble Space Telescope?
16 years
If you could build the telescope in any location where would you build it and why?
I want to look closer to ojects in the sky at night, I want to build my own.
Who invented the biggest telescope?
Lady Violet made the biggest telescope, she was eighteen when she started to build it and it was completed four years later. back in the eighteenth century ( when lady violet lived) there where few tools to build it that is why it took so long for such a young woman to build it.
How do you make a simple telescope?
You can assemble a simple telescope by using two lenses, one weak convex lens (this is thicker at the centre) as the objective and a stronger concave lens ( thinner at the centre) as the eyepiece. then, with simple manipulation you can determine the focal length of your lenses, double this calculation for length of tubing required to mount lenses and assemble a gallilean style telescope. ******* An online visual guide can help you understand what is involved in building a telescope.
What does a simple refracting telescope have?
It has a collection of mirrors and lenses - which direct the incoming image to the eyepiece, which is usually set at 90 degrees to the body of the telescope.
