Installing The Battery - Bresser 70/400 AR-TELESKOP Instrucciones De Uso

Installing the battery

Using your telescope
To move the scope up, down and side to side, grip the telescope and steadily move the tube until your target
comes into view in the eyepiece. It is important to remember that the rotation of the Earth means objects
will move out of your eyepiece fairly quickly. Once you have found and focused on your desired target, you
will have to track the object as it journeys across the night sky. For a closer look at an object, you can insert
the 4 mm eyepiece. The magnification will increase from 20x to 100x.
Which eyepiece is right?
It is important that you always choose an eyepiece (5) with the highest focal width for the beginning of your
observation. Afterwards, you can gradually move to eyepieces with smaller focal widths. The focal width
is indicated in millimeters and is written on each eyepiece. In general, the following is true: The larger the
focal width of an eyepiece, the smaller the magnification. There is a simple formula for calculating the
magnification:
Formula for calculating magnification:
Examples:
Focal length
(Telescope)
400 mm
400 mm
400 mm
Focus wheel
Look through the telescope eyepiece (5) and hone in on a far away object that you can see well (for in-
stance, a church tower). Focus in on the object with the focus knob (1).
Technical data:
• Design: achromatic
• Focal length: 400 mm
• Objective diameter: 70 mm
Notes on cleaning
• Clean the eyepieces and lenses only with a soft, lint-free cloth, like a microfibre cloth. To avoid scratching
the lenses, use only gentle pressure with the cleaning cloth.
16
Focal length
(Eyepiece)
÷ 20 mm
÷ 8 mm
÷ 4 mm
1. Open the battery compartment cover clockwise with a
screwdriver.
2. Insert a CR2032 button cell battery, paying attention to
the correct polarity.
3. Hold the battery compartment cover in the appropriate
position and hand-tighten it anti-clockwise.
Magnification
= 20X x3
= 50X x3
= 100X x3
Barlow Lens
3x
= 60X
= 150X
= 300X