User manual

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 finderscope with reticule for

orientation. lt 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

300 m.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 finderscope. If the object seen through the telescope is not

visible, then release the adjusting screws and move the finderscope until the object

can be seen. Now retighten the adjusting screw while ensuring that the object remains

visible in the centre of the finderscope. To simplify this procedure use the adjusting

screws to adjust the object in the centre. The finderscope 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 finderscope.

ALTITUDE-AZIMUTH MOUNT

The telescope is fitted with an Altitude-Azimuth mount. „Altitude“ refers to the up and

down or vertical movement of the telescope, while „Azimuth“ refers to the sideways or

horizontal movement. The Altitude-Azimuth mount, in conjunction with the

microadjustable Altitude control (1), and the Azimuth Lock (14) enables you to observe the

entire night sky, or any celestial body, without having to move the tripod.

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.

The required magnification depends upon the object being observed. The following

general guideline is recommended for this purpose. ldeal viewing conditions are obtained

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Example:

= 56x magnification

700 mm (telescope focal length)

12,5 mm (eyepiece focal length)

Eyepiece chart and theoretical power limits:

Eyepiece Power Power with 1.5x erecting eyepiece

20 mm 35x 52,5x

12.5 mm 56x 84x

4 mm 175x 262x

ANL4511600MSP0906BRESSER 11.09.2006 15:20 Uhr Seite 8