TELES1
2
VELLEMAN
5. Setup
Tripod setup (fig. A):
1. Remove the tripod from the box.
2. Spread tripod legs (7) so that the leg braces
(9) are fully extended and rest safely at the
base of the tripod centre post (10).
3. Extend the legs and fasten all locks (8).
Installing the finderscope (fig. B):
1. Remove the finderscope (5) from the box.
2. Remove the two knurled screws from the
telescope main body (6).
3. Position the finderscope bracket on the
telescope main body (6) so that the holes in
the base of the bracket line up with the
exposed holes in the telescope main body.
4. Replace the two knurled screws and tighten securely.
Putting in diagonal mirror & eyepiece (fig. C):
1. Insert the diagonal mirror (3) into the focus tube (2). Secure by tightening the small retaining screw.
2. Insert the eyepiece (4) into the diagonal mirror (3). Secure by tightening the small retaining screw.
Putting in the erecting eyepiece (fig. D):
1. An erecting eyepiece has been provided for terrestrial viewing. It is provided to correct the upside down image
seen through an astronomical telescope.
2. Remove the diagonal mirror (3) and insert the erecting eyepiece (13). Tighten the small retaining screw.
6. Use
What you see through a telescope and how accurately you see it is a function of three factors:
•
Power / magnification
•
Brightness
•
Resolution / clarity of image
It is a common misunderstanding that the more power you have, the better it is. Indeed, the essential function of a
telescope is to magnify the image. However, there are limits to how much power can be used effectively. With every
increase in magnification, there is a corresponding reduction of brightness and resolution. Too much magnification
and the image will become dim and blurry. For best view of any astronomical body, you must strike a balance
between the three viewing qualities.
Furthermore, with every increase in power, there is a decrease in field of view. You will notice that celestial bodies
seem to move fast across the field of view even at low powers. High power will provide spectacular views of lunar or
planetary features, but can also be somewhat frustrating until you acquire a certain level of expertise at tracking
objects smoothly.
a. Celestial viewing
1. Glance through the main telescope’s eyepiece (4) for your object (you may have to alter the angle of the telescope
slightly). The object will most likely seem to be blurry at this stage, but that is normal. You are just trying to get the
object in the viewing field of your telescope lens. Once you have accomplished this task, fasten the Azimuth lock
(11) to keep the accuracy of your telescope steady.