Barska 900114 Manuale utente
BC268
Setup Instructions
Included Screws:
1. Attach the Tripod Leg x 3 to the Tripod Connector with the 3 screws. Screw
is shown in the picture on the left. Should look like picture on the right
when nished.
2. Attach the Tripod Leg x 3 to Accessory Tray with the 3 screws. Screw is shown
in the picture on the left. Should look like picture on the right when nished.
2
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CAUTION: DO NOT LOOK DIRECTLY
AT THE SUN. VIEWING THE SUN
OR ANY LIGHT SOURCE WITH THIS
OPTICAL DEVICE CAN CAUSE
PERMANENT EYE DAMAGE.
1. Tripod Leg 12. Polar Axis Lever
2. Accessory Tray 13. Declination Axis Clamp
3. Tripod Connector 14. Declination Axis Lever
4. Horizontal Axis Lever 15. Telescope Main Body
5. Counterweight 16. Finder Scope
6. Equatorial Mount 17. Eyepiece
7. Latitude Scale 18. Focus Tube
8. Longitude Scale 19. Focus Knob
9. Latitude Lever 20 Telescope Mounting Ring
10. Short Control Cable 21. Telescope Polar Axis
11. Long Control Cable
3. Attach Equatorial Mount to the newly built tripod with the screw shown in the
picture below.
4. Attach Counter Weight to Counter Weight Shaft and screw the newly made
Counter Weight to the Equatorial Mount as shown on the left and tighten the
Counter Weight with screw.
5. Attach & tighten Shorter Control Cable to Equatorial Mount shown in picture on
the left and Longer Control Cable to Equatorial Mount shown in picture
the right.
NOTE Should look like picture below on the after you have installed the
counterweight and 2 control cables.
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6. Insert Screw x 2 into Telescope Ring Mounts x 2 and attach the Telescope
Ring Mounts to the Telescope Main Body, make sure that the spacing between
hthe rings t into the Equatorial Mount.
7. Attach the Telescope Main Body to the Equatorial Mount as shown below.
8. Attach Eyepiece onto the Telescope Main Body as shown on the left. Should
look like picture on the right when nished. Can attach Barlow Lens instead.
9. Attach Finder Scope to the Telescope Main Body with the silver screws shown
in the picture as shown below.
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Operating Instructions
Telescope Movement:
For more drastic movement move the equatorial mount, and for minor slight
movements move the telescope main body with the degree references. Refer to
the image for reference.
In order to move the telescope horizontally (left to right):
1. Rotating entire Equatorial Mount: Loosen Horizontal Axis Lever and
use the Short Control Cable to pan the Equatorial Mount horizontally
(left to right). After you set the telescope in the desired position tighten
the Horizontal Axis Lever.
2. Rotating Telescope Main Body with Degree Reference: Loosen
the Polar Axis Lever and use the Long Control Cable to pan the
Telescope Main Body horizontally (left to right) and use the Longitude
Scale for degree adjustments. After you set the telescope in the
desired position tighten the Polar Axis Lever.
In order to move the telescope vertically (up and down):
1. Moving Equatorial Mount: Loosen Declination Axis Lever and
Declination Axis Clamp and use the Counterweight to move the
telescope to the desired position. After you set the telescope in the
desired position tighten both the Declination Axis Lever and the
Declination Axis Clamp.
2. Moving Telescope Main Body with Degree Reference: Loosen
Latitude Lever and use Counterweight to move the Telescope Main
Body vertically (up and down) and use the Latitude Scale for degree
adjustments. After you set the telescope in the desired position
tighten Latitude Lever
Adjusting the Finder Scope:
Since the telescope has a limited eld of view, it can be quite difcult to locate
a given star or planet. For this reason the telescope is tted with a nder scope
with reticule for orientation. It is advisable to complete the following settings in
daylight.
1. Insert the eyepiece with the lowest magnication in the Zenith mirror
or Zenith prism. Look at a stationary easily recognizable object that
is not further away than 300m. Turn the telescope with the horizontal
axle, and move the vertical axle until the object is in the middle of the
eld of view, and then focus the image. Tighten the adjusting screw
on the mount so that the telescope remains in this position (the higher
the object is above the horizon, the easier it is to locate).
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2. Now look through the nder scope. If the object seen through
the telescope is not visible, then release the adjusting screws and
move the nder scope until the object can be seen. Now retighten the
adjusting screw while ensuring that the object remains visible in the
centre or the nder scope. To simplify this procedure use the
adjusting screws to adjust the object in the centre. The nder scope
will move in the direction of the screw in which it is being turned.
All screws can be nally tightened as soon as the setting with the
eyepiece coincides with that of the nder scope.
EQUATORIAL MOUNT 900114: The Equatorial mount, in conjunction with the
micro adjustable Altitude control, and the Azimuth Lock enables you to observe
the entire night sky, or any celestial body, without having to move the tripod.
WHICH MAGNIFICATION? SELECTING THE CORRECT EYEPIECE
Magnication denes the power of a telescope to enlarge an image or to ‘pull it
in’ closer for viewing.
Example:
700mrn focal length = 56 x magnication
12.5mm focal length of eyepiece
The required magnication depends upon the object being observed. The
following general guideline is recommended for this purpose: Ideal viewing
conditions are obtained if the magnication is not more than 15x - 20x the
diameter of the objective lens, i.e. an optimal magnication of 1OOx - 125x
can be expected with 60 mm diameter objective lens to observe most celestial
objects. A lower magnication power is advisable for the observation of stars.
The eld of view is wider so that the object for observation is more easily
localized. The highest magnication power should only be used for particularly
clear observations of the moon an object that is relatively close and exceptionally
bright, so that good detail resolution is achieved at high magnication ratios.
Barlow Lens:
The Barlow lens increases the magnication of the telescope. A 3x Barlow
lens will therefore triple the telescope’s magnication power. Consequently a
56x magnication can be tri pled to 168x with a 3x Barlow lens. The highest
magnication power of the Barlow lens should only be used for large and bright
objects such as the moon and the brightest planets, as well as for nights with
optimal observation conditions.
Do not use the Barlow lens and the erecting eyepiece in conjunction with the
angle prism as this produces a particularly low resolution level with the result
that the image can no longer be sharply focuses. To use the Barlow lens take the
angle prism out of the tube. Insert the Barlow lens into the focus tube and then
attach the required eyepiece to the Barlow lens, focusing is then completed in the
customary manner.
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VERY IMPORTANT GENERAL REMARKS
CAUTION
TO AVOID EYE DAMAGE NEVER LOOK THROUGH THE TELESCOPE INTO
ANOTHER OPTICAL INSTRUMENT, INTO THE SUN OR A LIGHT SOURCE.
NEVER LEAVE THE TELESCOPE UNATTENDED, A CHILD COULD LOOK AT
THE SUN WITH IT AND SUFFER PERMANENT EYE DAMAGE.
Avoid sudden temperature uctuations as the moisture in the air will condense on
the objective lens. Should this happen, then place the objective lens not too close
to a source of heat and allow the moisture to evaporate slowly.
When mounting the parts ensure that the securing screws are not tightened too
rmly. This could damage the parts or the internal thread of the holders with the
result that the screws can no longer be tightened.
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