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reflecting telescopes
Reflecting telecopes: Giving you a good view
of deep-sky objects
Most reflecting telescopes are variations of an original 17th-century
design by Sir Isaac Newton. Reflecting telescopes use mirrors rather
than lenses to gather light. Mirrors are not subject to some of the
distortions that lenses are, so these instruments can see farther and
clearer than traditional reflector (lens-based) telescopes. If you want
to explore the sky beyond the solar system, consider a reflector. You'll
be able to see galaxies, nebulas, binary stars and star clusters. Here's
how a reflector works.
Light enters the telescope and is reflected off the large primary
mirror, located at the back of the tube. The primary mirror is curved.
This causes the light to concentrate at a focal point in the tube. The
concentrated light from the primary strikes the smaller secondary
mirror, which directs it to the eyepiece. It's that simple! Reflectors
are more efficient at gathering and concentrating light. Compared to
common 60-mm refractors a 76-mm reflecting telescope makes stars appear
60% brighter, a powerful superiority delivered by only 16mm of extra
diameter.
Most of the larger telescope manufacturers make reflecting telescopes.
Look for quality instruments from Meade, Orion and Bushnell. If you
select a reflector with a drive-ready equatorial mount, you can motorize
it to automatically track even a fairly dim celestial object in its
arced motion across the sky. This type of arrangement is perfect if you
want to take pictures of the object. Many telescopes are also
computer-ready, with built-in databases or catalogs of stars, planets,
comets, nebulas and galaxies. Just push a button to aim the instrument
with digital accuracy.
To learn more about reflecting telescopes or to see detailed
descriptions and comprehensive specifications, click one of the links
below.
Binoculars
Telescopes
Rifle Scopes
Night Vision
Spotting Scopes
Laser Sights
Range Finders
Night Vision Goggles
About The Author:
Rita Liotta
is a successful author and publisher at
www.1st-at-binoculars.com. Recommending
binoculars, telescopes, rifle scopes, night vision, spotting
scopes, laser sights, range finders & night vision goggles.
20-05-04
