Exam 6: Light and Telescopes

CCD images captured from telescopes are often ____ to be stored in a computer's memory for later analysis.

Which telescope is the largest refracting telescope in the world?

The Chandra observatory uses ________________ mirrors in which the X-rays reflect at shallow angles from the polished inside of the mirrors to form images on X-ray detectors.

All telescopes must be operated on site by an astronomer or a technician.

Radio telescopes are often located near populated areas.

Red light of the visible light spectrum has longer wavelengths than blue.

Space t elescopes carrying long-wavelength infrared detectors must carry _______________ for their optics to avoid the insides of the telescope and instruments from blinding the detectors.

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?

What is the shape of the segmented mirrors of twin Keck Observatory telescopes, Gran Telescopio Canarias, and the James Webb Space Telescope (scheduled to be launched in late 2018) ?

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

What technique often requires the use of a laser guide star?

Light-gathering power is proportional to the _______________ of a telescope's primary lens or mirror.

What characteristic of a telescope controls the amount of light captured by the telescope?

Gravity waves have never been detected.

What must be used to maintain the optics and operation of an infrared telescope?

All large astronomical telescopes built since the start of the 20th century have been _______________ telescopes.

What are the three factors which can limit the resolving power of a telescope?

Built in 1963, the _______________ telescope in Puerto Rico is the largest single radio dish in the world.

Why are X-rays and gamma rays considered dangerous forms of light?