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Ra R72 ED Doublet OTA 50953
Инструкция к Levenhuk Ra R72 ED Doublet Kit Страница: 2

Levenhuk Ra R72 ED Doublet OTA 50953 Инструкция к Levenhuk Ra R72 ED Doublet Kit онлайн [2/28] 838551

Your new Levenhuk Ra ED Doublet OTA is ready for observations right out of the box. This user guide will provide useful

information on assembling your optical tube and various accessories, so that you can begin your journey through the celestial

sphere with ease.

Note! A mount, tripod, diagonal mirror, diagonal prism, eyepiece, eyepiece adapter, nderscope and nderscope

base, extender, photo adapter, T-ring and camera are not included in the kit.

Finderscope, star diagonal and eyepiece assembly

• Attach the nderscope base onto the optical tube. Loosen the thumbscrew on the base. Install the nderscope onto the

base. Retighten the thumbscrew.

• All optical tubes accept 2" accessories (some models may require the use of a corresponding adapter with 1.25" or 2"

accessories). Keep in mind, however, that your views will be out of focus without a star diagonal or an extension ring.

To install a star diagonal or an extension tube, simply loosen the thumbscrew on the side of the focuser, insert the

accessory, and retighten the thumbscrew. Afterward, you can insert the desired eyepiece into the already attached star

diagonal or extension ring.

Attaching the OTA to a mount

Your OTA is tted with a mounting bracket (quick-release screw connectors) that may be used to attach the optical tube to a

mount or to another OTA as a guidescope.

Telescope assembly

Levenhuk Ra ED Doublet OTA

Congratulations on your purchase of a high-quality Levenhuk telescope! These instructions will help you set up, properly use, and

care for your telescope. Please read them thoroughly before getting started.

Your new OTA has an extremely fast focal ratio that makes it perfect for wide-eld astrophotography, yet it still produces

breathtaking views during visual observations. All optical elements are made of high-quality ED glass with extra-low dispersion

and are fully multi-coated for crystal clear and sharp views across the eld of view with no chromatic aberration.

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.

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.

Operating the telescope

Focusing

During celestial observations, out-of-focus images of dim stars may be very diuse, making it dicult to focus on such objects.

Choose a brighter celestial body (such as the Moon) as your rst observation object, and focus your view. With a 10:1 ne focus

adjustment (meaning that 10 turns of the ne focus knob equal 1 turn of the coarse focus knob), you can adjust the focus of

your view with great precision. Use the coarse focus knob to adjust the view until your object is as close to focus as possible,

and then make ne adjustments with the ne focus knob.

Eyepieces and magnication

An eyepiece magnies the image produced by the OTA. The longer the focal length, the lower the eyepiece magnication, and

vice versa. Therefore, it is recommended to have several eyepieces in your equipment. The total power of the telescope setup

may be calculated with the following formula:

Magnication = Focal Length of Telescope (mm) / Focal Length of Eyepiece (mm)

Levenhuk Ra R72 ED Doublet OTA 50953 Инструкция к Levenhuk Ra R72 ED Doublet Kit онлайн [2/28] 838551

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