232-020
E.T.T. Electronic Toys Trading GmbH Kreuzstraße 65/66 38118 Braunschweig
Nachdruck oder Vervielfältigung nur mit ausdrücklicher Genehmigung
Installation:
•
Adjust the legs of the tripod (26) to the desired height.
•
Attach the horizontal base (24) to the tripod (26).
•
Attach the accessory tray (27) to the tripod (26).
•
Attach the telescope’s main tube (10) with the help of the fasten thumb screw (15) to the horizontal
base (24).
•
Put the balance weight shaft (19) unto the horizontal base (24), balance the telescope’s main tube (10)
and tighten the screw finally.
•
Attach the right ascension control knob (18) and the declination control knob (21) to the horizontal base
(24).
•
Attach one of the three oculars to the ocular adapter (13) of the focus tube (5), look through it and
focus the picture.
•
Focus the finderscope (7) with the help of the finderscope’s ocular (9).
•
If the target object is not in the center of the finderscope’s crosshairs (7) adjust the finderscope with
the help of the bracket screws (6) and (8).
Operation:
Unfasten the declination circle (16), the hour circle (17) and the polar axis clamp screw
(22) so that the horizontal base (24) can be moved in circles.
Level the finderscope to that part of the starry sky you want to watch. Now the telescope is directly aimed to the
star which is in the center of the finderscope’s crosshairs.
Now fix the telescope by tighten the clamp screws.
You can search a limited part of the sky or the moon’s surface respectively with the telescope fixed like this by
using the right ascension control knob (18) and the declination control knob (21) to vary the mirror setting
inside. Do not move the control knobs over automatic stops by force. In case of doubt better adjust the main
tube of the telescope completely.
Under no condition use the telescope to look into the sun. In this case use the sun filter !!!
Optical Lens and Magnification:
The factor of magnification of a telescope depends on the focal length of the mirror (here: 900 mm) and the
focal length of the oculars (here: 20 mm, 12.5 mm or 4 mm).
.
Magn
hOcular
FocalLengt
hMirror
FocalLengt
=
45
20
900
=
x
72
5
.
12
900
=
x
225
4
900
=
x
If you replace the ocular adapter (13) with the Barlow lens the magnification rises by the factor 2:
45 x 2 = 90x ; 72 x 2 = 144x; 225 x 2 = 450x
