1. REFRACTOR/REFLECTOR
TELESCOPES
By: Chloe, Daria, Dylan, Eleanor

2. REFLECTOR
Two concave mirrors make light
bounce up to another mirror, which
bounces light into the eyepiece.

3. REFRACTOR
Refractor telescopes use convex
lenses to collect, focus, and
magnify light.

4. REFLECTOR PROS/CONS
Pros Cons
 The reflector is good  The Mirrors in the
for deep-sky objects telescope have to be
 Large Reflectors are recoated every few
very popular years in order to
function properly
 Its easy to damage
them, they are fragile
if you handle them to
roughly

5. REFRACTOR PROS/CONS
Pros Cons
 The Refractor  The refractor suffers
telescope is better for from chromatic
observing the planets aberration
and the moon
 Very expensive
 The Refractor
telescope uses lenses
instead of mirrors so
they don’t have to get
recoated like the
mirrors of the
reflector telescope

6. REFLECTOR HISTORY
The Reflector Telescope was invented by a Scottish
astronomer named James Gregory. James Gregory
was the one who designed in 1663 and then in 1689
Isaac Newton built the first Reflector telescope.

7. REFRACTOR HISTORY
The Refractor telescope was invented by a Dutch
optician, Hans Lippershey who designed convex
lenses held in front of each other, he put the lenses
in a tube to make the first refractor telescope.

8. BIBLIOGRAPHY
 Bibliography
 Refractor Telescope. (1998 - 2013). Retrieved from How
Stuff Works:
http://science.howstuffworks.com/telescope1.htm
 Brain, M. (1998 - 2013). Refractor Telescope. Retrieved from
How Stuff Works:
http://science.howstuffworks.com/telescope1.htm
 "All about Telescopes: Refractors, Reflectors and More." All
about Telescopes: Refractors, Reflectors and More. N.p., n.d.
Web. 28 Jan. 2013.
 "How Telescopes Work." HowStuffWorks. N.p., n.d. Web. 28
Jan. 2013
 "Reflector Telescope." Universe Today RSS. N.p., n.d. Web.
28 Jan. 2013
 "Advantages and Disadvantages of Reflecting Telescopes."
Yahoo! Contributor Network. N.p., n.d. Web. 28 Jan. 2013.