|
|
Search
for products for sale only! | |
|
|
Click on any product image to see
larger image of product.
 |
Bookmark - Add us to your
Favorites |
Refractor Telescopes
Refractor
Telescopes Refractor telescopes (also known as
dioptrics) are probably what most of us think of when we hear the word
"telescope." Refractors have a long, thin tube in which light passes in a
straight line from the front objective lens directly to the eyepiece, at the
opposite end of the tube.
Refractor telescopes have many advantages,
including:
- Simplicity of design, which translates into
reliability and ease of use.
- Little or no maintenance requirements.
- Excellent lunar, planetary and binary star
viewing.
- High contrast images with no secondary mirror or
diagonal obstruction.
- Sealed optical tube, to protect the optics and
reduce air currents, which tend to degrade image quality.
- Permanently mounted and aligned objective lens.
The 60mm (2.4") refractor is the most popular
telescope size for beginning astronomy enthusiasts and for casual gift-giving.
This size telescope is perfect for introducing newcomers to astronomy, at an
affordable price.
For astronomical observing, the 60mm refractor allows
you to see lunar details, Saturn and its rings, Jupiter and its moons, the
phases of Venus, larger globular clusters, bright double stars and some bright
nebulae. After adding an optional solar filter, you can observe activity on the
sun. In addition, a 60mm telescope can be used for terrestrial viewing, bringing
the world closer to you and allowing you to observe wildlife, distant views and
your environment.
The 70mm models serve the beginner to intermediate
observer who wants slightly more aperture than the 60mm models and allows you
to see more detail on objects
Celestron's 80mm and 102mm refractor models are top
choices for beginning observers who want to start with a more powerful telescope
and for intermediate level astronomers. These instruments perform equally well
for viewing within our solar system and for deep-sky observing. Starting with a
more powerful telescope can be a good option when you're looking for an
instrument to grow with as you explore the hobby of astronomy.
Celestron offers two different options in refractor
telescopes: the altazimuth mount and the equatorial mount. The economical
altazimuth is the simplest type of mount, offering two motions: altitude (up and
down) and azimuth (side-to-side), for an easily achieved full range of motion.
Celestron's equatorial models use the German equatorial mount with setting
circles and slow motion controls on both the right ascension (R.A.) and
declination (DEC.) axes. These features make it easier to locate and track
objects.
While observing, you'll notice that as the earth
rotates on its axis, stationary stars appear to move across the sky. Thus, due
to the earth's rotation, the object you're viewing will float out of view in
both axes, over time. A telescope on an equatorial mount can be aimed at a
celestial object and guided with the slow motion controls to follow the object
across the sky and keep it in the field of view of your telescope.
|
Support The Registry of Nature Habitats - Buy Conservation Credits For purchasing Conservation
Credit(s) You will receive a copy of the John Audubon Multimedia
CD A replica of the complete
(1840-1844) James Audubon's
Birds of America
You will also receieve a bluebird
house for each Conservation Credit purchased and a 20% off coupon to be used on
the A Bird's Home website!
 The Registry of Nature Habitats - Mission
Statement
The Registry of Nature Habitats is
dedicated to the preservation of land that, over time, has been a
site and home for complex ecosystems. The Registry advocates
preservation of these lands and its inhabitants, environmental
education for community individuals and groups, and nurturing of
these lands through restoration in order to conserve its
natural resources for future generations.
Preserve
The Registry of Nature
Habitats manages critical habitat, consisting of wetland,
lowland, upland, forest and stream habitat, providing a home
to wildlife species and plant species. As part of
the mission to preserve these lands and its inhabitants,
the Registry will continue to contract with owners
of ecologically sensitive land as it becomes
available.
Educate
The Registry of Nature Habitats is
a "teaching ground," able to provide hands-on, interpretive learning
experiences in areas such as ecology, botany, wildlife science, and
geology, as well as the arts and humanities. The
educational mission of The Registry of Nature Habitats is
to teach an understanding and appreciaton of the environment,
the invaluable lesson of land stewardship of our natural resources,
and to expand the general knowledge of this habitat through
scientific research. This will be accomplished through a
year-round experiential, interactive approach, along
with onsite and outreach activities including providing
educational material both on this website, on media and through
educational seminars. An on-site facility is in the
design phase, which will house classrooms and an administrative
space.
Nurture
Through several restoration
projects, including the rebuilding of stream corridors,
reintroducing native flora, and permitting only low-impact
activities, the Registry is nurturing much land back to
its natural state, undoing the damage of hundreds of
years. The Registry of Nature
Habitats restoration plan, developed with public and private
partnerships and with local community support, will increase
the land's value, enhance wildlife habitat, improve water
quality, and preserve the integrity of the land's
bio-diversity. Renewable
Energy
Promote the use of
renewable and efficient energy technologies through education,
training, workforce development, research, and project facilitation.
The Registry supports clean energy development and energy
conservation as the means to protect the environment, enhance
public health, and save our nature
habitats.
Conservation
We seek to educate people and provide innovative
solutions that will help build a clean, more efficient world, by
reducing energy consumption in a prudent way that does not
threaten the natural balance that supports all
life.
|
|
Woodside Gardens
(607) 746-3089 PO Box 351 Delhi, NY
13753 More information Help
Desk
Copyright © 1997-
Woodside Gardens
Last Updated:
|