Bedienungsanleitung Celestron SkyProdigy 70 - 22089 (Seite 10 von 32) (Englisch)

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3. Tighten the thumbscrew to hold the eyepiece in place.

To remove the eyepiece, loosen the thumbscrew on the eyepiece

barrel and slide the eyepiece out.

Eyepieces are commonly referred to by focal length and barrel

diameter. The focal length of each eyepiece is printed on the

eyepiece barrel. The longer the focal length (i.e., the larger the

number) the lower the eyepiece power or magnication; and the

shorter the focal length (i.e., the smaller the number) the higher

the magnification. Generally, you will use low-to-moderate

power when viewing. For more information on how to determine

power, see the section on “Calculating Magnication”.

Barrel diameter is the diameter of the barrel that slides into the

star diagonal or focuser. SkyProdigy uses eyepieces with a

standard 1-1/4” barrel diameter.

Focusing

For astronomical viewing, out of focus star images are very diuse,

making them dicult to see. If you turn the focus knob too quickly,

you can go right through focus without seeing the image. To avoid

this problem, your rst astronomical target should be a bright object

(like the Moon or a planet) so that the image is visible even when out

of focus. To get the focus close, star by focusing on a distant daytime

object at least a quarter of a mile away.

For 70 mm and 130 mm models:

To focus your telescope, simply turn either of the focus knobs at

the eyepiece end of the optical tube (see gures 2-6 and 2-8). Turn

the focus knob until the image is sharp. Once sharp, turn the knob

towards you to focus on an object that is closer than the one you

are currently observing. Turn the knob away from you to focus on a

more distant object than the one you are currently observing. The 70

mm and 130 mm have a silver focusing tension screw used to lock

the focuser in place.

For 90 mm model:

The focusing knob, which moves the primary mirror, is located on the

rear of the telescope next to the star diagonal and eyepiece. Turn the

focusing knob until the image is sharp. Once an image is in focus,

turn the knob clockwise to focus on a closer object and

counterclockwise for a more distant object. If the knob will not turn,

it has reached the end of its travel on the focusing mechanism. Turn

the knob in the opposite direction until the image is sharp.

Attaching the Computerized Hand Control

SkyProdigy’s hand control has a phone jack type connector at the

end of its cord. Plug the phone jack connector into the outlet at the

base of the telescope’s fork arm. Push the connector into the outlet

until it clicks into place and place the hand control into its holder as

described previously in the Assembly section of the manual.

Powering the SkyProdigy

SkyProdigy can be powered by 8 user supplied D-size alkaline

batteries or an optional 12v AC adapter.

To power SkyProdigy:

1. Insert 8 D-batteries into battery pack.

2. Plug the battery packs barrel connector into the 12v outlet

on the base of the telescope.

3. Flip the power switch to the “On” position. The light on the

power button and hand control display will come on.

In case of a loss of power, the optical tube can be moved by hand

in altitude (up and down) only. However, when powered on, the

telescope should always be controlled using the hand control.

SkyProdigy will lose its star alignment if moved by hand when

powered on.

The StarPointer Finderscope

The StarPointer is a zero magnication pointing tool that uses

a coated glass window to superimpose the image of a small

red dot onto the object you are viewing. The StarPointer is very

useful for nding terrestrial objects in the daytime, and seeing

where the telescope is pointing in the night sky.

While keeping both eyes open when looking through the

StarPointer, simply move your telescope until the red dot, seen

through the StarPointer, merges with the object as seen with

your unaided eye. The red dot is produced by light-emitting

INSTRUCTION MANUAL

FIGURE 2-9

VISUAL ACCESSORIES FOR THE SKY PRODIGY

Eyepiece

StarPointer

Finderscope

Focus Knob

Star

Diagonal

FIGURE 2-11

On/Off

Switch

12v Power

Outlet

FIGURE 2-10

Auxiliary

Port

Hand

Control

Port

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