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Sky Trip ST50 с книгой
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Discovery Sky Trip ST50 с книгой [7/51] En discovery sky trip telescopes

DISCOVERY SKY TRIP TELESCOPES

Discovery Sky Trip refracting telescopes installed on simple alt-azimuth mounts make a wonderful

present for beginning astronomers of all ages. With these models, you can explore craters on the Moon,

observe details on surfaces of dierent planets, as well as enjoy the views of bright deep-sky objects.

These instructions will help you set up, properly use, and care for your telescope. Please read them

thoroughly before getting started.

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 exing 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 ngers. 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.

Mount assembly (g. 2)

• On the lower part of the tube, there is a mounting plate with a threaded hole. Align it with the

fastening screw of the tripod.

• Screw the tripod fastening screw into the hole on the tube mounting plate in order to secure the

telescope tube.

• Do not overtighten the screw because you might accidently damage the screw thread.

Optical accessories assembly

Your telescope can be equipped with additional accessories, such as eyepieces, diagonal prism or a

Barlow lens. The accessories should be installed in well-dened ordering.

Loosen the focuser thumbscrew. Insert the diagonal prism into the focuser tube and retighten the

thumbscrew to hold the diagonal prism in place (g. 4). Then, insert the desired eyepiece into the

diagonal prism and secure it by retightening the thumbscrew. If a Barlow lens is needed, install it

between the diagonal prism and the eyepiece.

Barlow lens

A Barlow lens increases the magnifying power of an eyepiece, while reducing the eld 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 magnication, the benets 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 same magnication. And the best

advantage is that a Barlow lens can potentially double the number of eyepieces in your collection.

Optical nderscope assembly and alignment

Unthread two screws in the back of the telescope tube. Place the nderscope base above the holes on

the tube. Lock the nderscope base into position by tightening the screws (g. 3).

Optical nderscopes are very useful accessories. When they are correctly aligned with the telescope,

objects can be quickly located and brought to the center of the view. Turn the scope end in and out to

CAUTION! Never look directly at the Sun — even for an instant — through your

telescope or nderscope without a professionally made solar lter 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

nderscope is covered with aluminum foil or another non-transparent material.

Children should use the telescope under adult supervision only.

Discovery Sky Trip ST50 с книгой [7/51] En discovery sky trip telescopes

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