Electromagnetic radiation in the wavelengths between a few hundred meters to a few millimeters.
it measure waves
To find the aperture of a reflecting telescope, you would measure the diameter of the primary mirror. The aperture of a telescope is the diameter of its primary light-gathering element, which in the case of a reflecting telescope, is the primary mirror.
8.2 meter-miles
The "resolving power" of a telescope is a measure of the ability of a telescope to distinguish between two separate objects that appear to be very close together in the sky.
The primary tools used in early astronomy were a compass to measure directions, a sextant (or octant) to measure angles in the sky, a watch and a telescope.
To view things from far away is called a binocular
A spectrometer is used to measure properties of light. The most common usage is as an instrument attached to a telescope for astronomers to measure the chemical elements in a star.
A telescope with a resolution of 10 shows more detail than a telescope with a resolution of 6. Resolution is a measure of an instrument's ability to distinguish between closely spaced objects or features in an image. A higher resolution value means that the telescope can produce sharper and more detailed images.
optical telescopes - high mountain far from city light pollutionradio telescope - anyplace with little radio interference in the bands it operates inx-ray or gamma ray telescope - in orbitneutrino telescope - deep in an abandoned salt mine.etc.
Some instruments used in studying stars include telescopes, spectrographs to analyze the light from stars, photometers to measure the brightness of stars, and interferometers to combine light from multiple telescopes for higher resolution imaging. Telescopes can be ground-based or space-based, like the Hubble Space Telescope.
It is a reflecting telescope
Telescope eyepieces are important of any visual telescope. It is the main part of the telescope and is what determines how the object will look like through the telescope.