National Geographic Bresser 9118400 Инструкция к National Geographic Bresser онлайн [7/56] 815364

General Warnings

• Risk of blindness — Never use this device to look directly at the sun or in the direct proximity of the sun.

Doing so may result in a risk of blindness.

• Choking hazard — Children should only use the device under adult supervision. Keep packaging mate-

rial, like plastic bags and rubber bands, out of the reach of children, as these materials pose a choking

hazard.

• Risk of re — Do not place the device, particularly the lenses, in direct sunlight. The concentration of light

could cause a re.

• Do not disassemble the device. In the event of a defect, please contact your dealer. The dealer will con-

tact the Service Centre and can send the device in to be repaired, if necessary.

• Do not expose the device to high temperatures.

• The device is intended only for private use. Please heed the privacy of other people. Do not use this

device to look into apartments, for example.

Parts overview

1. Focus wheel

2. Zenith mirror

3. Eyepieces (12.5 mm, 20 mm)

4. Telescope (Telescope tube)

5. Lens hood

6. Objective lens

7. Locating screw for the vertical ne adjustment

(for moving upward and downward)

8. Tripod legs

You should take some time to decide where you would like to set up your telescope. Choose a stable sur-

face like a table. Mount the telescope to the tripod with the locating screw for the vertical ne adjustment

(7) (Fig. 1). You can now place the zenith mirror (2) into the eyepiece holder and secure it with the small

screw on the connector (Fig. 2). Next, set the eyepiece (3) into the opening of the zenith mirror (2) (Fig. 2).

Here too, there is a screw with which you can screw the eyepiece onto the zenith mirror.

Note: First, put the eyepiece with the largest focal width (e.g. 20 mm) onto the zenith mirror. While you'll get

the least amount of magnication, it will be easier for you to view things.

Azimuthal mounting

Azimuthal mounting means that you can move your telescope up and down, without having to adjust the

tripod.

Use the locating screw for the vertical ne adjustment (7) to locate and lock onto the position of an object

(to focus an object).

Which eyepiece is right?

It is important that you always choose an eyepiece with the highest focal width at the beginning of your

observation. Afterward, you can gradually move to eyepieces with smaller focal widths. The focal width

is indicated in millimetres and is written on each eyepiece. In general, the following is true: the larger the

focal width of an eyepiece, the smaller the magnication. There is a simple formula for calculating the

magnication:

Focal width of the telescope tube : Focal width of the eyepiece = Magnication