Different types of Telescope

1. Different
Types
Of
Telescope

2. an optical instrument designed
to make distant objects
appear nearer, containing an
arrangement of lenses, or of
curved mirrors and lenses, by
which rays of light are
collected and focused and the
resulting image magnified.

4. A refracting telescope (also called a refractor) is a type of
optical telescope that uses a lens as its objective to form an
image (also referred to a dioptric telescope). The refracting
telescope design was originally used in spy glasses and
astronomical telescopes but is also used for long focus
camera lenses.

6. A reflecting telescope (also called a reflector) is an
optical telescope which uses a single or combination of curved
mirrors that reflect light and form an image.
Although reflecting telescopes produce other types of optical
aberrations, it is a design that allows for very large diameter
objectives.

8. A 150 mm aperture catadioptric telescope (Maksutov) A
catadioptric optical system is one where refraction and reflection
are combined in an optical system, usually via lenses (dioptrics)
and curved mirrors (catoptrics).

10. Why do Astronomers use Telescopes?
1. Telescopes see lots of colors - telescopes can collect light that our
eyes are unable to: radio, microwave, infrared, ultraviolet, x-rays and
gamma rays.
2. Telescopes collect lots of light - our pupils are only a few
millimeters across, so we can only collect photons over a tiny area
whereas telescopes can collect photons of huge areas (football fields
worth for radio telescopes)
3. Telescopes see fine details - Because of the wave nature of light
and the nerves in our eyes, we can only see details about the same
angular size as Jupiter's width. Telescopes can allow us to resolve fine
details - like Jupiter's Great Red Spot.
4. Telescopes can record observations with cameras - You can see
things with your eye and draw them, but telescopes can share
observations with the world! This is especially important for
convincing skeptics what you saw was real!