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DANGER!
Solar observation only by using the included solar filter and in combination with the dedicated telescope. The
solar filter must be mounted in front of the lens, i.e., before the sunlight enters the telescope.
BEFORE EVERY SOLAR OBSERVATION:
BEFORE EVERY SOLAR OBSERVATION:
Remove the optical finderscope from the telescope tube to avoid unintentional looking at the sun!
Remove the optical finderscope from the telescope tube to avoid unintentional looking at the sun!
SOLAR FILTER INSTRUCTIONS:
Fig. 1
E
B
D
Fig. 2
Important safety information
• Check the solar filter before each solar obser-
vation to ensure it is undamaged. Hold it up to a
Remove optical
bright light source to detect cracks and/or holes.
finderscope!
Do not use the telescope for solar observation if
the solar filter is even slightly damaged. In this
case, contact the manufacturer to obtain the
right spare parts.
• Always use the solar filter provided when obser-
ving the sun. Ensure it is correctly installed on
this telescope according to the instructions. The
usage of the solar filter is only recommended in
combination with this telescope.
• Never look into the sun through an eyepiece/
telescope without any certified solarfilter. A
moonfilter can never be used to observe the
sun. A moonfilter is only suitable for observing
the moon. The solarfilter must be mounted onto
the telescope aperture, not onto the eyepiece.
Otherwise the ray of light bundled by the lens
immediately destroys the filter foil and can
instantly cause eye damage or even complete
blindness.
• Before each sun observation, check that the sun
filter is firmly in place. Accidental detachment
from the lens opening can cause immediate and
permanent eye damage and blindness.
• If the sun filter cannot be mounted firmly enough
on the tube, improve the fit by applying several
self-adhesive felt strips or similar between the
sun filter and the lens aperture. Never use the
solar filter if it cannot be properly attached to the
telescope. In such a case, always contact our
customer service first.
• Be careful when observing the sun. Even a brief
glance through the unprotected lens may lead to
major eye damage or even complete blindness.
• Children must not be allowed to use the
telescope to look at the sun, even if the right
filter is fitted. Children must be under constant
supervision.
• Never leave the optics unattended. Children and
inexperienced adults may use the telescope
for solar observation without suitable safety
measures and blind themselves.
• Do not observe without interruption. Make
frequent breaks (approx. every three minutes).
• Do not look at the sun after an eye operation or
other eye ailment without medical approval.
• Waves / creases in the foil are normal and not a
product defect.
• Do not expose the device to high temperatures.
Installing the solar filter (Fig. 1)
1. Make sure the optics is turned away from the
sun before and during the installation.
2. Hold the filter only on the external frame (1). Never
touch the foil (2) to avoid any damages on it.
3. Insert the filter carefully with the clamp ring (3)
first into the free opening (4) of the telescope.
NOTE!
Turn away the optics from the sun before removing
the solar filter. The extremely powerful bundling
of light and heat by a bare lens may damage the
lens adhesive in the eyepiece.
Pointing the telescope at the sun
Start with checking the solar filter - it has to be
completely intact and firmly installed onto the
telescope. It is very easy to point the telescope
- 2 -
to the sun - just hold a piece of white paper
about 20cm behind the telescope tube and watch
the shadow on the paper. See Fig. 2. Point the
telescope to the approximate position of the sun
and watch the outline of the telescope shadow on
the paper. Move the telescope until the area of the
shadow is at its minimum. Now the sun can be
observed through the telescope with the 20mm
eyepiece. For finding the sun, please only use the
20mm eyepiece and without the Barlow lens. After
you have centered the sun in the field of view of
the eyepiece you can increase power by using the
Barlow lens to see more details.
Attaching and using the solar viewfinder
(accessory depends on model)
Depending on the telescope type purchased and
the scope of delivery, a special solar viewfinder
is used. it works according to a simple projection
method and can therefore be used safely to find
the sun. To do this, remove the LED viewfinder
for night observation from the optical tube and
insert the solar viewfinder into the holder. Of
course, this solar viewfinder must be adjusted with
the telescope on one axis before first use. To do
this, adjust the sun in the telescope as described
above using the cast shadow method and then
center the point-shaped sun projection with the
viewfinder adjustment screws in the center of the
viewfinder's lens.
Notes on use: Eyepiece magnification
Please use only the 20 mm eyepiece supplied for
solar observation either by itself or together with
the 2x Barlow lens to limit maximum magnification
to 18x or 35x. Greater magnification, e.g. using
the 4 mm eyepiece, yields blurred solar images.
This is a design feature and not a defect.
Maintenance and cleaning
Clean the foil only if it is absolutely neccessary!
For cleaning use a lint-free and soft cloth and
moisten it with a little water. Then clean the foil
with the cloth very carefully and without pressure.
Note that the foil is very sensitive and it must not
be used even with minor damages!
To avoid premature aging of the filter, it is
recommended to store the filter in a light-protected
environment when it is not in use.
Declaration of Conformity
Product Type:
Solar Filter
Product Name:
Solar Filter for Telescopes
Filter category:
E15, E16
Bresser GmbH declares that the above-named
product corresponds to the following directives
and relevant standards in its conception and
design as well in the version marketed by us.
Directive:
Harmonized Standards:
PPE 89/686/EEC EN 1836:2005, cl. 4.1.4.4
./.
ISO 12312-2:2015
This declaration is no longer valid in the event
of a change to the product which has not been
coordinated with us.
Bresser GmbH, Gutenbergstr. 2, D-46414 Rhede,
Germany
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