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uncovered nder scope is dangerous to look through. Even if you do not
look through it, unltered sunlight may melt internal parts of a nder scope.
3. To aim a telescope with solar lter installed at the Sun without aid of a nder
scope, you can use the shadow cast by the telescope as a guide. Point your
telescope in the general direction of the Sun, and watch the shadow cast by
the telescope tube on the ground. Move the tube gradually back and forth,
up and down until the shadow is the smallest it will get. The Sun should then
be visible in the eyepiece eld of view.
4. Allow the telescope and lter to equalize to outside temperature for at least
15 minutes.
5. Direct sunlight may warm the tube assembly enough to cause internal
heat currents that can degrade image quality, especially on dark-colored
telescopes. Cover the tube assembly with a light-colored cloth to help avoid
this.
6. If possible, do not view over pavement or buildings. Viewing over grass will
help avoid surface heat currents.
7. Point the telescope away from the Sun before removing the solar lter!
Removing the lter while the telescope is aimed at the Sun is dangerous if
anyone is looking into the eyepiece, and can damage the telescope if left
pointed at the Sun, unltered, for too long.
CAUTION
Do not use a filter that shows any form of defect such as pinholes
or scratches. If you see or suspect a defect, please contact us for
return instructions.
Observing Solar Eclipses with E-Series Filters
Whether using a telescope or binoculars for viewing a solar eclipse, there are a
few things to keep in mind:
1. Make sure the solar lter ts snugly on the front end of your instrument. For
binoculars, you'll need one lter over each of the two front lenses.
2. During all of the partial phases of a solar eclipse, the solar lter(s) must be
covering the front of your instrument.
3. Only during the brief "totality" portion of a total solar eclipse - when the
Moon completely covers the Sun's disk - is it safe to remove the lter and
view without it.
4. Be ready to stop viewing and re-install the lter the moment the rst glimmer
of the Sun's disk re-appears, signaling the end of totality.
Solar Photography
E-Series Safety Film Solar Filters can be used for both visual observing and
photography. By attaching a camera body to a telescope, in effect using the
scope as a telephoto lens, you can take striking photographs of the Sun. Only
attempt this if the telescope is equipped with the proper solar lter.
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