Original BAADER AstroSolar
Safety Film (OD 5.0)®

For construction of high-quality objective-filters for observing
the sun with telescopes, binoculars or cameras.
Tested safety film with high-quality optical characteristics;
reduces intensity of sunlight by 99.999%

Important hints for visual safety.
Please read before use!

Short instruction: How to build your own objective solar filter(see separate sheet for detailed instruction incl. images)
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Cut two equal sized rings from stiff cardboard. The inner diameter has to be the same as the full aperture of the telescope lens (ormirror), the outer diameter has to be 10cm (~4") larger.
Cover one full face of each cardboard-ring with double-faced adhesive tape. Cleanly cut any inner and outer excess of film, so that
only the two cardboard faces are covered with sticky tape.
Stretch out a square piece of “Kleenex-Tissue” flat on a hard, plane surface (a table) and secure the four corners of the tissue withclear adhesive tape. The tissue must be stretched out flat without ripples.
Cut a square piece of AstroSolar® Safety Film 5.0 a little larger than the outer diameter of the stiff cardboard rings.
To facilitate cutting and to protect the film from fingerprints, only cut AstroSolar® Safety Film 5.0 sandwiched between the two
included protective layers (white silk paper and/or transparent or white plastic).
Gently place AstroSolar® Safety Film 5.0 onto the flat Kleenex-tissue and secure the four corners with tape – but do not stretch it!
AstroSolar® Safety Film 5.0 must not be put under stress tension in order to retain its precision optical property. Now remove theprotective sheet facing upwards.
Hold one cardboard ring with the sticky side down 10mm above the film and let it fall down onto the film, so that the ring touches
the film all around at the same time.
Turn around the cardboard ring with the film-covered side facing upward, lay it back onto the Kleenex and remove the second
protective layer. Stick the second cardboard ring against it. Now you have created a round film-holder with AstroSolar® Safety Film
5.0 cleanly and securely fastened without creases and ripples – but most of all: without stressing the film!
Now put a 50mm (2") wide stripe of strong cardboard around the telescope dew cap or front end and tape the ends with double-tape. Repeate this procedure 3 times with double-faced adhesive tape between each layer to produce a stiff 50mm highcardboard cylinder to precisely fit onto your telescope.
At last securely glue the AstroSolar® Safety Film 5.0 holder onto the 50mm cylinder while the cylinder is still mounted onto thefront end of your telescope. Your homemade solar filter is ready! Store it properly!

Technical Details / Certification
Baader Planetarium's AstroSolar® Safety Film 5.0 is a specially manufactured streak- and blister-free film which is only 0.010 mm thick
and attains the optical quality of plane-parallel glass filters. The base material is not "Mylar". The highly uniform molecular structure ofthis material is the result of demands in nuclear- and elementary-particle physics. The coating is subject to constant quality control. Its
reflective properties of over 99.999% are tested repeatedly, to assert the reduction of intensity of sunlight by a factor of over 100,000.
AstroSolar® Safety Film 5.0 is coated on both sides of the film, which ensures a highly uniform filtering, while neutralizing occasional
microscopic holes in the coating (which are also much more present in single layer coated filters). One layer of this film is sufficient forthe construction of a safe, high-resolution solar instrument filter. Since AstroSolar® Safety Film 5.0 is the only film-material made to not
deteriorate the optical wavefront, it does allow to attain high magnification with any long-range optics without reducing sharpness orcontrast of the solar surface. The quality of the solar image and eye safety is immeasurably better than what can be achieved by using
so-called "Mylar rescue blankets" or similar materials, which must be used in several layers.
Important note: The eye safety norm EN ISO 12312-2:2015-11 for naked eye solar viewers does not apply to front aperturefilters, covering long-range optics. AstroSolar® Safety Film 5.0 is not authorized to be used for naked eye solar observationor production of solar viewers. For direct solar viewing without telescope, binocular or camera optics, inquire for our EN ISO
12312-2:2015-11 certified eclipse shades equipped with AstroSolar® Silver/Gold Film.

Please observe the following safety precautions
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Before each and every solar observing session, inspect your AstroSolar® Safety Film 5.0 for mechanical damages, broad scratches,streaks, extensive wipe marks and other quality degrading influences. Also check the filter's fit and, if necessary, tape it to prevent slipping.
Never use the filter at the eyepiece (where you look into the telescope), only attach it onto the objective (where light enters thetelescope); otherwise it can become dangerously hot inside the instrument – and inside the eyes. In case of binoculars, be sureboth objectives are securely covered; with cameras cover the viewfinders front lens.
A filter made of this durable material is relatively resistant to breakage (even during intentional attempts) in comparison to a glass filter. However, care must be taken with sharp pointed objects. Also be aware that the coating can be damaged by scratching or rubbingand take this into account when storing the filter. A filter with damaged film should be destroyed immediately to avoid accidental use.
Emphasize the importance of caution to those observing with you, especially children. Intentionally removing or damaging the filter can endanger their eyesight. This is no place for jokes. Never leave the telescope outside unattended during the daytime!
Do not use AstroSolar® Safety Film 5.0 with open-truss telescopes unless the tube is covered by a shroud. Always cover additional
finderscopes and telescopes with a securely fastened lightproof front cover. Unprotected viewing through the finder would havethe same catastrophic consequences as viewing through the main telescope. Additionally, an uncovered finder directed at the sun
can produce exceedingly unpleasant skin burns.

AstroSolar® Safety Film 5.0 is not authorized
to be used for naked eye solar observationand production of solar viewers but only forfront aperture filters, covering long-range
optics. For direct solar viewing without telescope, binocular or camera optics, inquire
for our EN ISO 12312-2:2015-11 certified
eclipse shades equipped with AstroSolar®
Silver/Gold Film.
AstroSolar® Safety Film 5.0 reduces theintensity of incident sunlight by a factor of100,000. According to current medical research, the filter (when used together withadditional optics) provides complete protection against thermal damage to the retina(photocoagulation).
Under certain circumstances, any intensesource of light (e.g. spotlight, laser beam,
welding arc, the sun) may trigger photo-toxic
processes in the eye. In extreme cases, suchreactions can have an additive effect overtime, leading to deterioration of the vision.
Please note: This filter provides protection
similar to good welding glasses, but eventhese glasses are not meant for uninterrupted
use – there are no studies which prove thatwelding glasses completely hinder phototoxic
reactions with absolute safety during longtime use, and the same reservations must
apply to this solar filter.
Therefore, exercise your own best judgment
when using this product.
Although we have never heard of a single
case of eye damage in 25 years of sales ofthis product to thousands of telescope users,and knowing that welders ply their trade foryears, while the solar filter's use can be measured in minutes, we want to inform you about
the current state of scientific knowledge.
In any case, it is advisable to interrupt solar
observation occasionally and look at other objects. If you have any doubts at all, especiallyin cases of known excessive eye sensitivity,
consult your ophthalmologist or optician.

GUARANTEE
We guarantee the filtering capability of thissolar safety film (reduction of light intensity by99.999%). If your Film has arrived damaged,
we will replace it free of charge. We cannot
accept further liability, especially in cases ofimproper use.

For larger requirements, such as instruments with large aperture, order AstroSolar® Safety Film 5.0 in rolled sheets of 50x100cm (approx. 4 Sq.Ft.) or 117x117 cm (46”x46”)

Please also note the instructions on the reverse side© Baader Planetarium GmbH: All rights reserved

baader-planetarium.com

www.

BAADER AstroSolar® Safety Film 5.0
INSTRUCTIONS FOR USE
Baader Planetarium produces and distributes Solar Film for more than 25 years. AstroSolar® Safety Film 5.0 provides a natural white solar image
without false blue or orange color. Sharpness and contrast largely exceed the quality of most commercial glass filters available on the market.
The basic film of AstroSolar® has been tempered in an elaborate ionization process to be free of inherent stress. Due to the added processes applied,AstroSolar® Safety Film 5.0 attains the quality grade of a planeoptical polished glass window of highest precision. AstroSolar® Safety Film 5.0 mustnot be put under stress tension.

FOR YOUR OWN SAFETY PLEASE OBSERVE FOLLOWING CONDITIONS:
Handling of AstroSolar® Safety Film 5.0
1. Do not touch the metalized surfaces with bare fingers. Fingerprints contain sweat, salt and urea, which acts as a weak acid to destroy the metallayers over time.
2. For cutting and trimming AstroSolar® Safety Film 5.0, always keep the film enclosed between the two protective sheets of clear or white plastic
film and white paper, to avoid scratches and fingerprints. Cut the required shape from the plastic/Film/paper-sandwich. Sketch the required final
shape of the film onto the covering paper before cutting the sandwich to protect the film. Dispose of all sheets of paper and plastic film after
they have served for protecting the Film during trimming and mounting operation.
3. Be attentive. AstroSolar® Safety Film 5.0 looks like an ordinary piece of metalized plastic – but it is not. Greatest care has been applied to metalize both sides of the fine optical grade carrier film without destroying its isotropic tempered state. Never put any stress onto the Film during
handling or mounting – stress tension would dramatically worsen the optical properties. Take greatest care to mount AstroSolar® Safety Film 5.0“stressfree” – but without creating ripples and creases.

Additional notes on AstroSolar® Material
4. The metal coatings on AstroSolar® Safety Film 5.0 film are equivalent to high reflective layers applied onto a telescope mirror. Treat the surfacesof AstroSolar® Safety Film 5.0 with equal care as you would with your telescope mirror. If you want to “clean” AstroSolar® Safety Film 5.0 fromdust and pollen-grains, do not “rub” the surface. Only rinse the film with running water and add dishwater detergent. For careful wiping use
pharmaceutic cotton-wool for applying and removing the detergent.
5. Before each solar session carefully inspect your AstroSolar® Safety Film 5.0 for mechanical damages, broad scratches, streaks, extensive wipe
marks and other quality degrading influences. Small pinholes do not degrade the eye safety or image sharpness of AstroSolar® Safety Film 5.0.
Hold the filter at arms length towards the daylight sun to detect dangerous defects with a quick look. Small pinholes may become visible but will
not be dangerous, because the light going through will be dispersed across a wide area like in a “camera obscura”. This scattered light however
will cast a “hue of light” to slightly overlay the solar image information and reduce image contrast somewhat.
For highest photographic performace and when using large telescope apertures at high magnification it is therefore advisable to “blacken out”
these pinholes. Use thick black laquer (black paint) and directly apply the paint onto the inner (telescope) side of AstroSolar® Safety Film 5.0
with a very thin, sharp brush to just cover the size of the pinhole while holding the filter towards the sun.
6. Always store your solar filter in a closed container and avoid the film faces to rub against any other surface during transport or storage.
Metal coatings on film are prone to ageing just like the coatings of a telescope mirror. A damaged, aged, frequently cleaned film which shows large
areas of scratches or wipe marks must be discarded and not be used for solar observation.
All this effort will be worthwhile. If treated apropriate as detailed above AstroSolar® Safety Film 5.0 delivers the same image quality as an extremely
expensive precision polished glassfilter, far better than all common “float glass” solar filters available at economy price.

WARRANTY
We warrant AstroSolar® Safety Film 5.0 to be manufactured and inspected with greatest care – especially to be free of uncoated areas or areas
were the optical density is lower than the stated density.
However, we do not warrant for AstroSolar® Safety Film 5.0 when treated or stored improperly or when the solar filter has not been inspected fordamages before each observing session.

Never leave your Solar Telescope outside unattended to prevent children or uninformed visitors from looking at theSun without proper guidance!
Only use this product if you feel well informed about its properties and the requirements for safe handling and storage.

Please also note the instructions on the front side© Baader Planetarium GmbH: All rights reserved

baader-planetarium.com

www.