Warranty And Service - Bresser National Geographic 76/350 Mode D'emploi

Eyepiece (15):
An eyepiece is a system made for your eye and comprised of one or more lenses. In an eyepiece, the clear
image that is generated in the focal point of a lens is captured and magnified even more.
There is a simple formula for calculating the magnification:
Focal width of the telescope tube / Focal width of the eyepiece = Magnification
In a telescope, the magnification depends on both the focal width of the telescope tube and the focal width
of the eyepiece.
From this formula, we see that if you use an eyepiece with a focal width of 20 mm and a telescope tube with
a focal width of 600 mm, you will get the following magnification:
600 mm / 20 mm = 30 times magnification
Focal width:
Everything that magnifies an object via an optic (lens) has a certain focal width. The focal width is the length
of the path the light travels from the surface of the lens to its focal point. The focal point is also referred to
as the focus. In focus, the image is clear. In the case of a telescope, the focal widths of the telescope tube
and the eyepieces are combined.
Lens:
The lens turns the light which falls on it around so that the light gives a clear image in the focal point after it
has traveled a certain distance (focal width).
Magnification:
The magnification corresponds to the difference between observation with the naked eye and observation
through a magnification apparatus (e.g. a telescope). In this scheme, observation with the eye is considered
'single', or 1 X magnification. Accordingly, if a telescope has a magnification of 30 X, then an object viewed
through the telescope will appear 30 times larger than it would with the naked eye. See also 'Eyepiece'.
Zenith mirror (16):
A mirror that deflects rays of light at a 90 degree angle. With a horizontal telescope tube, this device deflects
the light upwards so that you can comfortably observe by looking downwards into the eyepiece. The image in
a zenith mirror appears upright, but rotated around its vertical axis (what is left appears right and vice versa).
DISPOSAL
Dispose of the packaging materials properly, according to their type, such as paper or cardboard.
Contact your local waste-disposal service or environmental authority for information on the proper
disposal.

Warranty and Service

The regular guarantee period is 2 years and begins on the day of purchase. To benefit from an extended
voluntary guarantee period as stated on the gift box, registration on our website is required.
You can consult the full guarantee terms as well as information on extending the guarantee period and
details of our services at www.bresser.de/warranty_terms.
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