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Magnifying Power
The telescope, especially for astronomical observation. He got a toy from the carnival. and made it into a telescope by putting in a magnifying glass in it.
I know of at least three. I hope these help: - magnifying power - light gathering power - field of view
A Galilean Telescope is also an Astronomical Telescope so it is just a subset of Astronomical Telescopes.
a telescope is a magnifying tool used specially by astronomers.
The magnifying power of a telescope is the focal length of the scope in millimeters, divided by the focal length of the eyepiece in millimeters. Focal length of scope: 225cm=2250mm Focal length of eyepiece: 7.5mm 2250/7.5= 300X
There are different variations of the magnifying power of the telescope, which is why they look different.
telescope
He didn't he improved the existing telescope and turned it to astronomical use around 1609
An astronomical telescope is one that is used in astronomy - i.e., to watch stars, planets, comets, etc.
Cassegrain
The cost of space travel is still astronomical. A telescope is used for astronomical sightings.