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for Amateur Astronomists, Refractor for Children
Powerful Refracting Telescope, 525 X
Ideal for budding astronomists!
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Our Planet View Telescope 525X is
a powerful refractor telescope with a maximum magnification
of 525x (images appear up to five hundred and twenty
five times bigger!), making it among the most powerful
telescopes available for home use, and perfect for discovering
the solar system from your garden or bedroom window. Our
Planet View Telescope is brought to you by the famous Science
Museum in London - products you can trust, representing
great value for money.
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£ 79.00
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Planet View Refractor Telescope
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POWERFUL
TELESCOPE FOR ASTRONOMICAL (CELESTIAL) AND TERRESTRIAL USE
Our Planet View 525x telescope is a 'refractor' telescope
(sometimes called a 'refracting' telescope). Light enters
through a large lens at the end (called the 'Objective
Lens') and the image is brought to a focus by the
eyepiece. Refractor telescopes are of the type with which
most people are familiar - you look through one end at
the image coming in through the other. Refractor telescopes
are not always as powerful as reflector telescopes (see
our 675x
Reflector Telescope), however they are easier to use
for viewing terrestrial subjects (birds, buildings, horizon
etc), in addition to the stars and planets in the night
sky.
The most important thing to look for in a telescope is
the quality of the lenses. Generally speaking, for a refractor
telescope, the larger the diameter of the objective lens
(the opposite end to the eyepiece), the more light can
be collected, and hence the greater the quality of the
magnified image. Usually, the more you pay, the higher
the quality of the magnified image. This is not always
the case though among the telescopes we regularly review.
What we particularly like about this Science Museum planet
view telescope is that the telescope achieves a very good
trade-off between quality and price. This telescope is
powerful enough to enable amateur astronomists - especially
children and curious adults - to discover a wealth of
hidden secrets in the night sky, without costing the earth!
This telescope comes with a number of different eyepieces,
so that various magnifications can be used - you will
not always want to use the most powerful magnification,
as there is a trade-off between field of view, image brightness,
and magnification. For very bright objects, such as the
moon, full 525x magnification opens up a whole new world!
The Barlow lens supplied increases the magnification of
the telescope. A 175X magnification can be increased to
525X with a 3X Barlow lens.The highest magnification power
of the Barlow lens should only be used for large and bright
objects such as the moon and the brightest planets, as
well as for nights with optimal observation conditions.
Our Planet View telescope is fitted with an Altitude(Alt)-Azimuth
mount. "Altitude" refers to the vertical movement of the
telescope, while "Azimuth" refers to the horizontal movement.
The Altitude-Azimuth mount, in conjunction with the fine-adjustable
altitude control, and the Azimuth Lock enables you to
observe the entire night sky, or any celestial body, without
having to move the tripod.
Technical specification:
- Objective Lens Diameter 76mm (2.99")
- Focal Length 900mm
- Eyepieces 20mm, 12.5mm, 4mm
- Barlow 3X
- Maximum Magnification 525X
- Finderscope 6X 25mm
Package includes:
- Planet View Reflecting Telescope
- 3 Interchangeable Eyepieces (20mm,12.5mm, and 4mm),
giving magnifications up to 175X respectively
- 6X 25mm Finderscope with crosshairs
- 3X Barlow Lens, enabling magnifications up to 525X
- Alt-Azimuth Mount (tripod stand) in aluminium, with
Accessory Tray
- Instruction Booklet & Space Map
Ages: 10+
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Telescope Features:
- Powerful telescope
in the Science Museum range
- Refracting
Telescope, with Large 76mm diameter objective lens
- Comes witha
a range of eye-pieces, finder scope and a sturdy aluminium
Alt-Azimuth tripod stand
- Perfect
for discovering the Night Sky (and more earthly
subjects!)
- MAP OF
THE NIGHT SKY included
- Ideal for
Adults and Children alike
Instruction
Manual (PDF)
Lenses
See also:
Home Planetarium
only: £ 26.95
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Choosing a Telescope: There are two main categories
of telescope: Refractors and Reflectors. Refractors
(like the one shown on this page), use two or more lenses
to collect and focus the light from an object to the eye
of the observer, and can trace their design back to the
telescopes of Galileo’s era. Reflectors, developed by Isaac
Newton in the 17th century, use mirrors to focus the light.
As magnifications increase, impurities in the glass of lenses
can cause distortion (commonly a “rainbow-like” halo around
objects) requiring expensive and difficult treatments and
coatings to correct. Reflectors telescopes avoid this problem,
and are generally cheaper to manufacture for a given sized
aperture (the main lens or mirror used to catch the incoming
light). As a result, most high-performance optical telescopes,
including the Hubble Space Telescope, are reflector designs.
Science Museum: The Science Museum in London is one
of the world's pre-eminent science museums, and voted one
of the World’s Top 5 Tech Mecca’s by The Observer. It is
also the UK’s No. 1 visited Museum. The Science Museum houses
outstanding collections relating to science, technology
and medicine, and is one of the most prestigious and respected
organisations dedicated to the promotion of public science
and technology. The origins of the Science Museum lie in
the nineteenth-century movement to improve scientific and
technical education. Prince Albert was a leading figure
in this movement, and he was primarily responsible for the
Great Exhibition of 1851 to promote the achievements of
science and technology. The profits of the hugely successful
Exhibition were used to purchase land in South Kensington
to establish institutions devoted to the promotion and improvement
of industrial technology. At the same time, the Government
set up a Science & Art Department which established the
South Kensington Museum in 1857, from which the Science
Museum and Victoria & Albert Museum have developed.
Please note: Viewing the sun can cause permanent eye
damage. Do not view the sun with the Telescope, Finderscope
or even with the naked eye. To observe the sun, it is
best to project the view onto a piece of white card (see
intsruction booklet).
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