X-ray+Telescopes

X-ray telescopes are neat little things, here's why;
An X-ray Telescope was first use for taking a look at the Sun ; because it was the only source of a fair amount of x-rays. Seeing as the Sun's so bright in the x-rays, the thing you are using to look at it can be small. You can even use photographic film! The first x-ray picture of the Sun using a telescope attached to a rocket  was taken by John V. Lindsay  of the NASA Goddard Space Flight Centre in 1963. The first orbiting telescope was on the Skylab in the early 1970's. It took over 35 000 images of the Sun! That's a lot of pictures!

How they work:

Normal telescopes like a reflector telescopes bend and focus light with a mirror so you can see it. In a X-ray telescope, it can not use a mirror because the rays will go right through your mirror! In a x-ray telescope you will be using a polished metal surface. This is used with several cylinders nested in the telescope of a parabolic (satellite shape) shape.

I researched this from the following sites:

http://nobelprize.org/nobel_prizes/physics/laureates/2002/illpres/telescope.

http://imagine.gsfc.nasa.gov/docs/science/how_l2/xtelescopes_history.html

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