Bushnell Voyager - 780040 オーナーマニュアル

The equatorial mount is designed to move in any direction. It can be set to allow

manual controls to track the movements of celestial bodies across the sky. This

is referred to as diurnal movement; movement of celestial bodies in the direction

opposite to that of the earth’s rotation and is around the earth’s axis.

By  aligning  the  telescope’s  polar  axis  at  celestial  North,  you  will  place  the

telescope in parallel with the earth’s axis and thus be able to locate stars in the

sky based on star atlas information. To compensate for your position on earth,

the polar axis is set in one of three ways:

•

  Set up the telescope at night. Loosen the declination axis lock screw (use

adjustment tool provided) and rotate the telescope around the declination

axis until the arrow on the declination scale points to 90 degrees. Tighten the

declination axis lock screw. The telescope is now roughly in parallel with the

polar axis.

•

  Loosen the horizontal axis lock screw and turn the telescope until

the  objective  end  faces  due  north.  This  can  be  done  by

approximating the location of the pole star (Polaris or North Star)

or by the use of a compass. True North is then found by directing

the telescope at Polaris, as magnetic North is slightly away from

true North.

•

  Look  up  the  latitude  of  your  area  in  any  geographical  atlas.

Loosen the latitude lock screw and set the latitude scale to the

correct latitude for your area. Aim the Finderscope at Polaris. You

will  probably  notice  that  Polaris  is  not  dead  center  in  the

finderscope’s  field  of  view.  This  is  probably  because  your

telescope  is  not  absolutely  level  with  the  ground.  Loosen  the

horizontal axis lock screw again and turn the telescope so that it is directly aimed at Polaris. Tighten both

the horizontal axis lock screw and the Latitude Lock Screw. Polaris is 1 degree of the North celestial pole.

Therefore, the sighting of stars will have to be slightly adjusted as you locate them in the heavens.

•

  Aim the main telescope tube at a well-defined target, at least 200 yards away (e.g. a telephone pole or

building). Fully extend the focusing tube by turning the rack and pinion focusing mechanism (16).

•

  While looking through the Eyepiece Lens (19), slowly retract focusing tube by turning the rack and pinion

 until object comes into focus. 

•

  Locate an object at least 200 yards away. Tighten the Latitude Lock Screw (fig 5.) so that telescope’s aim

is not disturbed.

•

  Looking through the Finderscope (21), adjust the Finderscope Adjustment Screws (22) until the crosshairs

of the Finderscope are precisely centered on the same object already centered in the field of view of the

. 

•

  Objects located using the finderscope will also be centered in the main telescope’s view.

•

  Arrange the telescope so that the telescope body is horizontal to the floor (latitude of 0

°

). Loosen the

. The telescope should now turn freely about the

Horizontal Axis 

Lock Screw

Latitude Lock Screw