...40070 40080 60050 70060 70076 80060

Directions for use
40070
40080
60050
70060
70076
80060
90060
900114
Fig. 1
Fig. 1A
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
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ENGLISH
DIRECTIONS FOR USE
1
2
3
4
5
6
7
8
9
10
Tripod Leg
Tripod Leg Adjusting Screw
Accessory Tray
Polar Axis Locking Lever
Counterweight Shaft
Counterweight
Hour Axis Scale
Declination Scale
Objective Lens
Dust Caps
11
12
13
14
15
16
17
18
19
20
Cradle
Telescope Main Body
Eyepiece
Finderscope Bracket
Finderscope
Diagonal
Focus Tube
Focus Knob
Flexible Control Cable
Polar Axis Micro Adjustment Lever
1)
Extend the legs (1), as indicated in Fig. 1, and lock them in the adjusted height with the
supplied wing nut. Before tightening the wing nuts check that there is a washer
underneath.
2)
Connect all three tripod legs to the tripod head with the wing nut and screw in the
manner as indicated in Fig. 2a).
b) For model 40070 / 40080 & 600X50 proceed as in figure 1A setting up the pre mounted tripod and connecting it to the telescope with the micrometric screw that regulates
the movement of the telescope.
3)
Now fasten the accessory tray (3) to the flanges of the tripod legs with the supplied
screws and wing nuts. (see Fig. 3)
4)
After all screws have been firmly tightened, the telescope can be connected to the yoke
of the tripod head. Proceed as indicated in Fig. 2 for model 60050 / 70060 / 80060 /
70076
b) Mount the telescope main body (12) in the yoke, and adjust with the large locking screw.
Now adjust the pin of the micro adjustable altitude control with the guide provided for
this purpose (see Fig. 2 b + c).
c) Model 90060 / 900114 proceed as in Fig. 9.
5)
Remove the finder scope (15) with attached bracket (14) from the box. Then remove
the two knurled thumb screws from the telescope main body (12). Position the finder
scope bracket on the telescope main body so that the holes in the base of the bracket
line up with the exposed holes in the telescope main body. Return the two knurled
thumb screws and tighten securely (see Fig. 4).
Insert the angle prism into the focusing tube (17). Secure by tightening the corresponding fastening screws (see Fig. 5.) for model 90060 & 900114 see (Fig. 9).
7)
Insert the eyepiece (13) into the angle prism (16). This also has to be adjusted with the
small fastening screw (see Fig. 6).
8)
If you wish to use the prismatic eyepiece extension with the factor 1.5x or the 3x Barlow
lens, insert this between eyepiece (13) and the focusing tube (17) (see Fig. 7).
9)
If your telescope is supplied with a moon filter you can screw the filter into the thread of
the eyepiece underneath before inserting the eyepiece into the focus tube.
USING THE SETTING CIRCLES TO LOCATE STARS
(90060 and 900114 only)
Since this equatorial telescope is designed to move in any direction, it can be set to track
the apparent movements of celestial bodies across the sky. This movement of celestial
bodies is in the direction opposite to that of the earth's rotation and is around the earth's axis
or celestial axis (Fig. 8). By simply aiming the telescope polar axis (21) at celestial North you
will automatically place the telescope in parallel with the earth's axis and thus be able to
locate stars in the sky based on information in star charts and star atlases. In simple
language you aim your telescope in the center of the celestial sphere that point in the sky
(like the hub of a wheel) and does not appear to move. The angle of declination is simply
900 minus the angle away from this hub. Celestial North is 90°. If you were at the North
Pole, you would point your telescope straight up to aim at celestial North.
To compensate for your position on the round earth, the polar axis (21) is set in one of two
simple ways. (see Fig. 8).
1)
Set up the telescope at night. Loosen the declination axis clamp lever (24) (Fig. 9) and
turn the telescope around until the arrow points at 90° on the declination scale. Tighten
the declination clamp lever. The telescope is now in parallel with the polar axis.
2)
Loosen the horizontal lever (22) (Fig. 9) and turn the telescope until the OPEN end
faces due North. This can be done by an approximate sighting on the Pole Star (Polaris)
or by the use of a compass to find magnetic north.
True North is then found by directing the telescope at the Pole Star, as magnetic North
is slightly away from the true North.
3)
Look up the latitude of your area from a geographical atlas. Loosen the polar axis lever
(20) (Fig. 9) and set the latitude scale (23) (Fig. 9) to the correct latitude for your area.
Aim the sighting scope at the Pole Star. You will probably notice that Polaris (the Pole
Star) is not in the center of the crosshair finder scope. This is probably because your
telescope is not on even ground level.
Loosen the horizontal axis lever (22) again and turn the telescope so that it is directly
aimed at the Pole Star. Clamp both levers tight. Polaris is 1° off the North celestial pole.
Therefore, the sighting of stars will have to be slightly adjusted as you locate them in
the heavens.
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6)
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ADJUSTING THE FINDERSCOPE
Since the telescope has a limited field of view, it can be quite difficult to locate a given star
or planet. For this reason the telescope is fitted with a finder scope with reticule for orientation. It is advisable to complete the following settings in daylight.
1)
Insert the eyepiece with the lowest magnification 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 field 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).
2)
Now look through the finder scope. lf the object seen through the telescope is not
visible, then release the adjusting screws and move the finder scope until the object can
be seen. Now retighten the adjusting screw while ensuring that the object remains visible in the centre or the finder scope. To simplify this procedure use the adjusting screws
to adjust the object in the centre. The finder scope will move in the direction of the screw
in which it is being turned. All screws can be finally tightened as soon as the setting with
the eyepiece coincides with that of the finder scope.
PAN HEAD MOUNT 60050 & 40070 & 40080
The telescope is fitted with a pan head mount. The movement of the telescope is done
by movements whilst turning the main bolt.
AZIMUTH MOUNT 70060 & 80060 & 70076
The telescope is fitted with an Altitude - Azimuth mount. "Altitude" refers to the up and
down or vertical movement of the telescope, whilst " Azimuth" refers to the sideways or
horizontal movement.
EQUATORIAL MOUNT 90060 & 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 CORRRECT EYEPIECE
Magnification defines the power of a telescope to enlarge an image or to 'pull it in' closer for
viewing.
Example :
700mm focal length
12.5mm focal length of eyepiece
= 56 x magnification
The required magnification depends upon the object being observed. The following general
guideline is recommended for this purpose: Ideal viewing conditions are obtained if the
magnification is not more than 15x - 20x the diameter of the objective lens, i.e. an optimal
The field of view is wider so that the object for observation is more easily localized. The
highest magnification 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 magnification ratios.
BARLOW LENS
The Barlow lens increases the magnification of the telescope. A 3x Barlow lens will therefore triple the telescope's magnification power. Consequently a 56x magnification can be tripled to 168x with a 3x Barlow lens. The highest magnification 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.
VERY IMPORTANT GENERAL REMARKS
Avoid sudden temperature fluctuations 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.
CAUTION
TO AVOID EYE DAMAGE NEVER LOOK THROUGH THE TELESCOPE INTO ANOTHER
OPTICAL INSTRUMENT, INTO THE SUN OR A LIGHT SOURCE.
NEVER LEAVE A TELESCOPE UNATTENDED, A CHILD COULD LOOK AT THE SUN
WITH IT AND SUFFER PERMANENT EYE DAMAGE.
When mounting the parts ensure that the securing screws are not tightened too firmly. 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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magnification of 100x -125x can be expected with 60 mm diameter objective lens to observe most celestial objects. A lower magnification power is advisable for the observation of
stars.
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PARTS & ACCESSORIES
The parts and accessories that come with your telescope might be different from country to
country, please refer to the packaging to find out how your telescope is equipped.
The following magnification values are achieved when using the prismatic eyepiece
extensions and the exchangeable eyepieces: See technical Chart (p. 45).
BARSKA® OPTICS WARRANTY / REPAIR OUTSIDE THE US & CANADA
Congratulations on your purchase of a high quality product. Your optical device has been
manufactured to meet the highest quality standards. To ensure proper usage, please follow
the enclosed instructions manual.
This Barska® Optics product is fully guaranteed against any manufacturing defects for 10
years from the date of purchase as long as it has been used under normal conditions.
During this period, it is the distributors responsibility in each country to either repair or replace free of charge upon presentation of the original purchase receipt. This warranty is not
transferable, will not be reissued and does not cover any damages caused by accident, misuse or unauthorised repair.
For repair service please bring your product back to the point of sale or contact your local
distributor which you can locate in the yellow pages or on our website: www.barska.com
All costs to and from the repair centre such as travel, carriage costs, postage, insurance
charges etc. are always at the expense of the owner. If the product repair costs are not
covered by the warranty, the costs of evaluating the repairs, administrative and carriage
costs are at the owners expense and are payable no later than upon delivery. In the event
that the repair costs are not accepted by the owner, the owner can either abandon the product free of charge at the repair centre, or recover the non-repaired product by paying the
cost for evaluating the repairs, administrative and carriage costs no later than upon delivery. All other claims of any nature are not covered.
BARSKA® OPTICS WARRANTY / REPAIR WITHIN THE US & CANADA
Please refer to the additional warranty insert card
© 2004 Barska® Optics