Bresser National Geographic 90/1250 GoTo [10/32] Accessories may vary depending on the model
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Bresser National Geographic 90/1250 GoTo [10/32] Accessories may vary depending on the model

Bresser National Geographic 90/1250 GoTo [10/32] Accessories may vary depending on the model
10
General Information
About this Instruction Manual
Please read the safety instructions in this manual carefully. To avoid damage
to the unit and the risk of injury, only use this product as described in the
manual.
Keep the instruction manual handy so that you can easily look up information
on all the functions.
CAREFUL
You will find this symbol before every section of text that
deals with the risk of minor to severe injuries resulting from
improper use.
ATTENTION
You will find this symbol in front of every section of text
which deals with the risk of damage to property or the
environment.
Intended Use
This product is intended only for private use.
It was developed for the magnified display of things in nature.
General Warning
RISK OF BLINDNESS
Never use this device to look directly at the sun or in the direct prox-
imity 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 material, like plastic bags and rubber bands, out of the
reach of children, as they pose a choking hazard.
FIRE RISK
Do not place the device, particularly the lenses, in direct sunlight.
The concentration of light could cause a fire.
RISK OF ELECTRIC SHOCK
This device contains electronic components which operate via a
power source (power supply and/or batteries). Children should
only use the device under adult supervision. Only use the device as
described in the manual; otherwise, you run the risk of an electric
shock.
RISK OF CHEMICAL BURN
Keep batteries out of the reach of children! Make sure you insert the
batteries correctly. Empty or damaged batteries could cause burns
if they come into contact with the skin. If necessary, wear adequate
gloves for protection.
RISK OF FIRE/EXPLOSION
Do not expose the device to high temperatures. Use only the rec-
ommended batteries. Do not short-circuit the device or batteries, or
throw them into a fire. Excessive heat or improper handling could
trigger a short-circuit, a fire or an explosion.
ATTENTION
Do not disassemble the device. In the event of a defect, please
contact your dealer. The dealer will contact the Service Centre and
can send the device in to be repaired, if necessary.
Privacy Protection
This device is intended only for private use. Please heed
the privacy of other people. Do not use the device to look
into apartments, for example.
Accessories may vary depending on the model.
Parts overview (No. 1-8)
B
Telescope tube
C
Tube opening
D
Eyepiece connection
E
Focus wheel
F
Handbox
G
Eyepiece holder
H
Handbox tray
I
Azimuthal lock
J
Tripod
1)
LED viewfinder (only with Art.No. 90-62100)
1!
Battery compartment
1@
Locking screw
1#
Accessory tray
1$
Altitude locking knob
1%
Dust cover
1^
Eyepieces
1&
Moon filter
1*
Compass
1(
Star map
2)
Software CD
Handbox (No. 9)
B
Red light source
C
Handbox display
D
Plus/minus key
E
Illumination
F
Arrow keys
G
Centre key
H
Number pad
I
Mini-USB port
J
RJ-45 port
1)
RJ-22 port
Part I – Construction
1. General/Location
Before you begin assembly, choose a suitable location for your telescope. It
is best to build the telescope in a place where you have a clear view of the
skies, a stable footing and sufficient space around you.
Before beginning assembly, remove all the parts from the packaging, and,
using the diagram, check to make sure no parts are missing.
2. Tripod
Take the tripod (9) out of the box. Carefully open the legs and place the
tripod on a level surface place and lock the accessory tray (13) on the centre
knob and rotate until it snaps in place (No. 3).
Note: Please do not forget to remove the accessory tray before collapsing
the tripod.
3. Telescope
Loosen the screw in the dovetail mount so that it is completely retracted
(No. 4). Place the telescope with the dovetail in the mount and tighten the
screw. Make sure that the National Geographic logo is upright.
4. Altitude knob
Loosen the vertical knob by rotating it anticlockwise, align the optical tel-
escope tube (1) horizontally and retighten the knob (No. 5).
5. Mount
Place the mount base's mounting holes on the tripod's mounting screws and
tighten them (No. 6).
6. Eyepiece
Remove one eyepiece from its eyepiece holder (6) and slide it into the
eyepiece connection (3). Tighten the holding screws (No. 5). Start with the
lowest magnification eyepiece, which has the highest focal length printed on
it (e.g. 20 mm or 25 mm, depending on your model) to locate objects and
find the correct focus. If you have the object you want to view centred in
the field of view, switch to a higher magnification by using an eyepiece with

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