Bresser Skylux 70 Mode D'emploi page 14

With the eyepieces, you can decide which magnification you
want for your telescope.
Before you insert the eyepiece and the star diagonal prism,
you must remove the dust-protection-cap from the eyepiece
connection tube (Fig. 1, 6).
Loosen the screw (Fig. 8, X) on the eyepiece connection tube
and insert the star diagonal prism. Retighten the screw (Fig. 8,
X) on the eyepiece connection tube.
Repeat the same process on the star diagonal screw (Fig. 9,
X) and insert 20mm eyepiece in the star diagonal prism and
retighted.
Make sure that the eyepiece is pointing vertically upwards.
Otherwise loosen the screw (Fig. 8, X) on the eyepiece
connection tube and rotate the star diagonal prism into the
vertical position.
RISK of bodily injury!
Never use this device to look directly at the sun
or in the direct proximity of the sun. There is a
RISK OF BLINDNESS!
6. Setup – viewfinder assembly and alignment:
The view finder and its holding device are pre-assembled and
included in the packaging.
Push the foot of the viewfinder holding device completely into
the telescope barrel base (illustration 10). The holding device
will click into place. Make sure that the viewfinder lens faces
the barrel opening.
There are two clamping screws (black) on the holding device
(illustration 1, 3) plus a spring-loaded counter screw (silver). The
black clamping screws are now to be screwed in until resistance
is felt. This affixes the viewfinder barrel in place.
Before you start any observation it is essential the finderscope
be adjusted. The finderscope and main telescope must have
identical positioning.
HINT!
i
To align them proceed as follows:
take the 20 mm eyepiece, insert it in the zenith
mirror and align the main telescope with an
easily found and identified earthly object such
(illustration 11, church tower top, house gable).
The distance should be at least 200m – 300m
meters. Place the object dead centre of the eye-
piece vision field.
The image is vertical but inverted. The image reproduction in
the viewfinder is neither perpendicular nor true to side. Turn
(right/left) one of the two finderscope adjustment screws whilst
looking through the finderscope. Continue until the finderscope
hairlines are at exactly the position that corresponds to the view
through the main telescope eyepiece.
Focusing the finderscope:
Turn the rear lens mount (Fig. 10, X) one to two turns to the left.
You can then set the counterring separately.
Look through the finderscope and focus on a distant object.
Turn the lens mount in one direction or the other until the object
appears sharpest.
7. Setup – protection-caps:
In order to protect the inside of your telescope from dust and
filth, the tube opening is protected by a dust-protection-cap
(Fig. 12, X). For observation remove the cap from the opening.
8. Setup - flexible shafts
To ease precise adjustment of the declination and right
ascension axes flexible shafts are installed in the holding
devices of both axes provided for the purpose (illustration 13, X).
The long flexible shaft is mounted parallel to the telescope barrel
(illustration 1, 14). It is secured in place with a clamping screw in
the axis notch provided.
The short flexible shaft (illustration 1, 15) is mounted laterally. It is
secured in place with a clamping screw in the axis notch provided.
Your telescope is now ready for use.
Part II – Handling
1. Handling – telescope mount:
Your telescope mount is of a new type allowing you to make two
different types of observation.
A: Azimuth = ideal for terrestrial use.
B: Parallactic = ideal for celestial observation.
Re A.
In azimuth use the telescope is moved horizontally and vertically.
1. Undo the polar vertical clamping screw (illustration 14a, X)
and lower the incline plate until it is horizontal (to the stop).
Retighten the polar height fastening screw.
2. Undo the vertical clamp (illustration 15 A) and move the main
tube to a horizontal position. The re-tighten the clamps.
The telescope can now be moved horizontally and vertically
using the flexible shafts (illustration 1, 14+15).
Re B.
2. Handling. Night use.
A dark site is very important at night as light would interfere with
observation focus and detail visibility.
Allow your eyes to adjust to the darkness after leaving a lighted
room. After about 20 minutes you can begin celestial observa-
tion.
Do not use the telescope from within enclosed spaces. Position
your telescope and accessories about 30 minutes before
observing to ensure temperature compensation in the main
tube. Make sure the telescope is on a flat stable surface.
3. Setup - alignment - basic siting.
Undo the polar height clamping screw (illustration 14a X) and
move the inclined plate (illustration 15 B) to the latitude of your
location using the holding rod table as a rough guide. Turn the
tripod so that the N mark faces north. The top of the inclined
plate should also face north (illustration 14b). The latitude setting
rod (illustration 14a Y) points south.
4. Setting latitude.
Determine latitude of your location using a street map, atlas
or the Internet. Germany is between 54° (Flensburg) and 48°
(Munich) degrees of latitude.
Undo the polar height adjustment clamping (illustration 14 X) and
set the angled plate until the figure on the latitude adjustment
rod (illustration 14 Y) is that of your location, e.g. 51°)
5. Turn the declination axis (illustration 15 C)
incl. telescope mount 90°.
Set the tube the right way round (see illustration / marking) in the
mounting and tighten the clamping screw. The telescope
eyepiece projection now points to the ground and the lens to
the polar star. Undo the latitude setting clamping and the DEC
axis in that sequence and get the polar star in the middle of the
eyepiece field of vision. Then re-tighten the clamping. The tripod
may not now be moved or adjusted again as this would misalign
it. The telescope is now correctly aligned. This procedure is
essential so that celestial objects are tracked.
6. Tracking and observation positioning
Tilt the main telescope (main tube) 90° (illustration 15 C). Turn it
180° to the right or left until the objective lens shows
skywards.
Tighten all clamping (illustration 13 Y + illustration 15 A) so that
tracking can be done using the flexible shaft.
Manual use of the hours axis (R.A. axis) via the flexible shaft
(illustration 15 D) compensates for the earth's rotation so that
objects remain always in the eyepiece visual field. If you want
to move to another object undo the clamping (illustration 13 Y
+ illustration 15 A), rotate the main tube appropriately and then
re-tighten the clamping. Fine adjustment is done using the flex-
ible shaft (illustration 1 14+15).
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