Levenhuk Discovery Spark AZ-Serie Bedienungsanleitung Seite 11

DISCOVERY SPARK AZ TELESCOPES
CAUTION! Never look directly at the Sun — even for an instant — through your telescope or
finderscope without a professionally made solar filter that completely covers the front of the
instrument, or permanent eye damage may result. To avoid damage to the internal parts of your
telescope, make sure the front end of the finderscope is covered with aluminum foil or another non-
transparent material. Children should use the telescope under adult supervision only.
All parts of the telescope will arrive in one box. Be careful when unpacking it. We recommend keeping the original
shipping containers. In the event that the telescope needs to be shipped to another location, having the proper shipping
containers will help ensure that your telescope survives the journey intact. Be sure to check the box carefully, as
some parts are small. All screws should be tightened securely to eliminate flexing and wobbling, but be careful not to
overtighten them, as that may strip the threads.
During assembly (and anytime, for that matter), do not touch the surfaces of the optical elements with your fingers. The
optical surfaces have delicate coatings on them that can easily be damaged if touched. Never remove lenses or mirrors
from their housing, or the product warranty will be null and void.
Tripod assembly
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Slowly loosen the tripod locking knobs and gently pull out the lower section of each tripod leg. Tighten the screws to
hold the legs in place (except for Discovery Spark 703 AZ) (fig. 2).
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Spread the tripod legs apart to stand the tripod upright.
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Adjust the height of each tripod leg until the tripod head is properly leveled. Note that the tripod legs may not be the
same length when the mount is leveled (except for Discovery Spark 703 AZ).
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Place the accessory tray on top of the bracket, and secure it with thumbscrews from underneath or secure the
accessory tray with one screw in the middle of the tray (except for Discovery Spark 506 AZ, Discovery Spark 703 AZ).
Mount assembly
Mount without a fork (fig. 3a):
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Remove the altitude lock knob from the mount head.
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Place the telescope optical tube on the altazimuth mount so that the hole in the optical tube lines up with the hole in
the mount head.
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Insert the altitude lock knob through the mount head and optical tube. Make sure the hole is clear all the way through
before tightening the knob. Secure the altitude lock knob.
Mount without a fork (fig. 3b):
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The telescope tube has a mounting tab on its underside. Place this tab into the slot on the tripod top.
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Tighten the knurled knob on the tripod head to attach the tube onto the tripod.
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Screw the altitude slow-motion control into the threaded socket at the rear of the mount.
Fork mount (fig. 3c):
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Remove the locking screw from the slow-motion control rod.
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Insert the rod into the hole on the side of the fork mount.
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Place the telescope tube between fork arms so that holes on the tube match the arm holes. Fasten the telescope
tube to the mount with thumbscrews.
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Fasten the other end of the rod to the telescope tube by inserting the screw through shaft and tube holes and tightening it.
Optical accessories assembly
Your telescope can be equipped with additional accessories, such as eyepieces, diagonal mirror or prism, or a Barlow
lens. The accessories should be installed in well-defined ordering.
Refractors (fig. 1a, 1b, 1c): Loosen the focuser thumbscrew. Insert the diagonal mirror into the focuser tube and
retighten the thumbscrew to hold the diagonal mirror in place (fig. 5a). Then, insert the desired eyepiece into the diagonal
mirror and secure it by retightening the thumbscrew. If a Barlow lens is needed, install it between the diagonal mirror
and the eyepiece. You can use the erecting eyepiece to get a direct image.
Reflectors (fig. 1d): Loosen the focuser thumbscrew and take off the plastic cap from the focuser tube. Insert the
selected eyepiece and secure it by retightening the thumbscrew (fig. 5b). If a Barlow lens is needed, install it between the
focuser and the eyepiece.
Barlow lens
A Barlow lens increases the magnifying power of an eyepiece, while reducing the field of view. It expands the cone of
the focused light before it reaches the focal point, so that the telescope's focal length appears longer to the eyepiece.
In addition to increasing magnification, the benefits of using a Barlow lens include improved eye relief, and reduced
spherical aberration of the eyepiece. For this reason, a Barlow plus a lens often outperform a single lens producing the
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