Bresser ASTRO PLANETARIUM Operating Instructions Manual page 17

Example 2:
You would like to project the night sky for De-
cember 30, 10:30 pm with your Astro-Planeta-
rium. Turn the knob for the date set-up F until
the bar for "10:30 pm" is situated above on the
time scale G just before the long bar for the
month of January (JAN (Fig. 9).
Fig. 10
02:00 01:00 00:00 23:00 22:00 21:00 20:00
20 10 20 10 20 10 20
NOV DEC JA N FEB
Once you have set the observation period, you
are ready to start projecting. Close the slide
disc holder 1! and press the on/off/ button C
to start the projection.
You can make further adjustments to the pro-
jection angle for an optimal image on the wall
or ceiling by moving the planetarium sphere B
in the pedestal j . In figure 11, you can see the
possibilities for projecting onto the ceiling (a) or
the wall (b).
Fig. 11
28/12
By turning the focus knob i , you can obtain the
20
JAN
correct focus for image projection (Fig. 12).
10
30/12
IMPORTANT: The correct distance between
the objective lens and the wall or ceiling is be-
tween 1.8 and 2 m. If you have tried to focus
the image, but it still remains fuzzy, you have
probably not chosen the correct projection dis-
tance.
Press the sleep mode button E to set the time
(30 or 60 minutes) for activating the automatic
shut-down function. The corresponding LED
lamp will light up. At the designated time, the
device will switch itself to sleep mode (also en-
ergy saving mode). If you wish to turn off the
sleep mode, press the button E until the LED
lamp goes out. In order to save energy, the pro-
jection automatically shuts down after 2 hours.
When the astro planetarium is not in use, the
a
b
device should be turned off simply by pressing
the on/off/pause button C. Remove the batter-
ies from the device if it is out of use for a long
period (1 week or more).
Using the image rotation function
Press the button for left-sided rotation 1& to
make the night sky projection move in an au-
tomatic, anti-clockwise direction. This corre-
spods to the natural motion sequence of the
northern hemisphere.
You can influence the speed of movement by
Fig. 12
pressing the button again. In total, there are 6
different speed settings. The LED light flashes
according to the set speed.
Press the on/off/pause button C to stop the
rotation.
Similarly, image rotation can also be activated
and adjusted to the southern hemisphere. In
this case, press the button for right-sided rota-
tion 1^. All other functions are identical to those
for left-sided rotation.
GB
17