Exploring Telescopes and the Universe

What type of telescope uses lenses to gather and focus light?

• Reflector

• Refractor

• Newtonian

• Cassegrain

Which type of telescope mount allows the telescope to move up and down and side to side?

• Equatorial

• Altitude/Azimuth

• Dobsonian

• German Equatorial

If a telescope has a focal length of 1000 mm and an eyepiece with a focal length of 25 mm, what is the magnification?

• 25x

• 40x

• 50x

• 75x

What is the main mirror or lens in a telescope called?

• Eyepiece

• Objective

• Finder Scope

• Diagonal

Which space telescope is designed to observe infrared wavelengths?

• Hubble Space Telescope

• Chandra X-ray Observatory

• Spitzer Space Telescope

• Fermi Gamma-ray Space Telescope

What type of Messier object is M1, also known as the Crab Nebula?

• Star Cluster

• Supernova Remnant

• Planetary Nebula

• Galaxy

Which constellation contains the star Betelgeuse?

• Orion

• Ursa Major

• Cassiopeia

• Cygnus

What is the focal ratio (f-number) of a telescope with a focal length of 800 mm and an aperture of 100 mm?

• f/4

• f/6

• f/8

• f/10

Which type of telescope uses mirrors to gather and focus light?

• Refractor

• Reflector

• Catadioptric

• Binocular

What is the name of the brightest star in the constellation Ursa Major?

• Polaris

• Sirius

• Dubhe

• Vega