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2. Now look through the finder scope. If 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.

WHICH MAGNIFICATION? SELECTING THE CORRECT EYEPIECE

Magnification defines the power of a telescope to enlarge an image or to ‘pull it 

in’ closer for viewing.

Example:

                                   700mrn focal length        

    = 56 x magnification

                         12.5mm focal length of eyepiece

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 magnification of 100x - 125x can be 

expected with 60 mm diameter objective lens to obser ve most celestial objects. A 

lower magnification power is advisable for the observation of stars.

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 lon ger 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

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 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.

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.

w w w . b a r s k a . c o m

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w w w . b a r s k a . c o m

450 Power, 60050 Starwatcher Telescope

450 Power, 60050 Starwatcher Telescope

Summary of Contents for 60050 Starwatcher

Page 1: ...erchandise received without a valid RMA will be returned to shipper at his her own expense Please include all of the following when returning BARSKA products for service and or replacement 1 Please write your complete details Name Address Telephone E mail address RMA etc 2 Purchase receipt or Proof of Purchase Original Copy 3 A brief explanation of the defect 4 A Check Money Order of 25 00 cover i...

Page 2: ...e telescope pieces together with lock nut Initial set up is shown in the picture on the left Should look like picture on the right when finished 4 Remove caps from telescope Note When mounting the parts ensure that the securing screws are not tightened too tightly Tightening too tightly could result in damage the parts or the internal thread of the holders w w w b a r s k a c o m 2 450 Power 60050...

Page 3: ...aytime and learn to use the telescope looking at easily identifiable objects Get familiar with the telescope s movements pointing focusing different eyepieces and magnifying powers Below is some information on how to use the telescope Telescope Movement In order to move the telescope horizontally left to right Loosen Horizontal Axis Screw In order to move the telescope vertically up and down Loose...

Page 4: ...tail 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 ...

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