Bresser Junior 40/400 Instrucciones De Uso página 9

The magnification also depends on the focal width of the telescope tube. This telescope contains a tube
with a focal width of 400 mm.
Examples:
400 mm / 20 mm = 20X magnification
400 mm / 12.5 mm = 32X magnification
Focus wheel
Look through the telescope eyepiece (3) 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) in the way shown in Fig. 3.
Smartphone holder
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X
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must be dry, clean and free from all kinds of dust and dirt. We assume no responsibility for dropped and
broken smartphones due to incorrect handling.
Technical data
• Design: achromatic
• Focal length: 400 mm
• Objective diameter: 40 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.
• To remove more stubborn dirt, moisten the cleaning cloth with an eyeglass-cleaning solution, and wipe
the lenses gently.
• Protect the device from dust and moisture. After use, particularly in high humidity, let the device ac-
climatise for a short period of time, so that the residual moisture can dissipate before storing.
Possible observation targets
The following section details several interesting and easy-to-find celestial objects you may want to
observe through your telescope.
The Moon
The moon is Earth's only natural satellite.
Diameter: 3,476 km / Distance: 384,400 km from Earth (average)
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Y
Insert the eyepiece (3) into the smartphone
holder (11) and tighten the screw (X) to the
bracket firmly. Then set the smartphone holder
with the eyepiece into the eyepiece connection
(2) and tighten the clamping screws (Y) by
hand firmly. Now start your smartphone
camera app and press your smartphone on the
plate. Make sure that it is properly secured.
The camera should rest just above the
eyepiece. Place the smartphone exactly over
the eyepiece, so that the image is exactly
centered on your display. It may be necessary
to use the zoom function to fill out the whole
screen of your smartphone. The suction cups
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