Bresser ASTRO PLANETARIUM Operating Instructions Manual page 16

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 (5) until
the bar for "10:30 pm" is situated above on the
time scale (6) 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 (11) and press the on/off/ button
(2) 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 (1)
in the pedestal (9). In fi gure 11, you can see
the possibilities for projecting onto the ceiling
(a) or the wall (b).
16
Fig. 11
28/12
By turning the focus knob (8), you can obtain
20
JAN
the correct focus for image projection (Fig.
10
30/12 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 (4) 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 (4) until the LED
lamp goes out. In order to save energy, the pro-
a
b
jection automatically shuts down after 2 hours.
When the astro planetarium is not in use, the
device should be turned off simply by pressing
the on/off/pause button (2). Remove the bat-
teries 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 (17) 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 infl uence the
Fig. 12
speed of movement by pressing the button
again. In total, there are 6 different speed set-
tings. The LED light fl ashes according to the
set speed. Press the on/off/pause button (2) 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 rotation (16). All other functions are
identical to those for left-sided rotation.