7
Using Your Telescope
1) Take your telescope outside. Do not try and
use it by aiming through a window. If the win-
dow is closed the window glass will introduce
reflections and distortions. If the window is
open the moving air currents of different tem-
peratures will cause distortions.
2) Let your telescope adjust to the outside tem-
perature. Your telescope will perform much
better if the lenses and the air inside the tube
are all the same temperature as the outside
air. This process may take up to 1/2 hour if
the temperature difference between inside
and outside is extreme.
3) Try to find a location that is away from glar-
ing lights. If you are in a large town or city
you may want to try and find a location in the
country. Using a telescope in the skyglow of
a town or city can cut its ability by half.
Astronomical Use:
1) From aligning the Finder Scope you know
how to change eyepieces. Always start view
ing with your 20mm. eyepiece. This is your
low-power eyepiece and its wide viewing field
will make it easier to locate objects. By the
way, you will notice that stars, when seen
through your telescope, still look like points of
light. This is because they are so far away.
Even the largest telescopes show stars only
as bright points.
2) Once you have located an object and the
view is clear you may wish to change to the
4mm. eyepiece. This is a much higher pow-
ered eyepiece. You will notice that your ob-
ject looks bigger, but not as bright as seen
with the 20mm. eyepiece. This is normal. If
the viewing conditions are not good the 4mm.
image may not appear sharp or stable. If this
happens, switch back to the 20mm. eyepiece
and try the 4mm. eyepiece another night.
EYEPIECE
DIAGONAL
MIRROR
FOCUSING KNOB
Figure 4
