Edu Science WIFI 70-900, Руководство пользователя

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Telescope ABC’s
What do the following terms mean?
Diagonal:
A mirror that defl ects the ray of light 90 degress. With a horizontal telescope
tube, this device defl ects the light upwards so that you can comfortably
observe by looking downwards into the eyepiece. The image in a diagonal
mirror appears upright, but rotated around its vertical axis (mirror image).
Focal Length:
Everything that magnifi es an object via an optic (lens) has a certain focal
length (FL). The FL 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 FL of the telescope
tube and the eyepieces are combined.
Lens:
The lens turns the light which falls on it around in such a way so that the
light gives a clear image in the focal point after it has traveled a certain
distance (focal length).
Eyepiece:
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 magnifi ed still more.
There is a simple formula for calculating the magnifi cation:
Focal length of the telescope tube / Focal length of the eyepiece = Magnifi cation.
You see: In a telescope, the magnifi cation depends on both the focal length
of the telescope tube and the focal length of the eyepiece.
Magnifi cation:
The magnifi cation corresponds to the difference between observation with
the naked eye and observation through a magnifi cation apparatus (e.g. a
telescope). In this scheme, observation with the eye is considered “single”,
or 1x magnifi cation. Accordingly, if a telescope has a magnifi cation of 30x,
then an object viewed through the telescope will appear 30 times larger than
it would with the naked eye. See also “Eyepiece”.
Troubleshooting
Mistakes:
No picture
Blurred picture
No focus possible
Bad picture
Viewing object visible
in the fi nder, but not
through the telescope
Despite using star
diagonal prism
the picture is “crooked”
Help:
Remove dust protection cap
and sun-shield from the
objective opening.
Adjust focus with focus wheel.
Wait for temperature to
balance out.
Never observe through a
glass surface.
Adjust fi nder.
The star diagonal prism
should be vertical in
the eyepiece connection.
DISPOSAL
Dispose of the packaging materials properly, according to
their type (paper, cardboard, etc). Contact your local
waste disposal service or environmental authority for
information on the proper disposal.
Please take the current legal regulations into account
when disposing of your device. You can get more informa-
tion on the proper disposal from your local waste disposal
service or environmental authority.
Need Help? Toll Free 855-863-4426
Product Manual, Planisphere &
Astro Software Visit:
www.exploreone.com/pages/product-manuals
Astro Software CD