CELESTRON 94246 Solar Filter User Manual
- June 9, 2024
- Celestron
Table of Contents
SOLAR FILTER
#94246 for AstroMaster 70 & 70LT
#94247 for StarSense Explorer DX 102 & Omni AZ 102
#94251 for TravelScope 60
#94252 for StarSense Explorer LT 80
94246 Solar Filter
The solar filter material used in this product:
- Conforms to and meets the Transmission Requirements of ISO 12312-2, Filters for Direct Observation of the Sun.
- Meets the Transmission Requirements of EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun.
- Meets the Transmission Requirements of AS/NZS 1338.1:2012, Filters for Eye Protectors. EC Type Examination by: SAI Global Assurance Services Ltd. (Notified Body No. NB2056), MK5 8HJ U.K.
SOLAR WARNING
Even though your EclipSmart solar filter is equipped with ISO certified material that allow safe direct observation of the Sun, there are still some important rules you should follow when solar observing:
- Never look directly at the Sun with the naked eye or with a telescope unless you have the proper solar filter. Permanent and irreversible eye damage may result.
- Never use a telescope to project an image of the Sun onto any surface. Internal heat build-up can damage the telescope and any accessories attached to it.
- Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside the telescope can cause these devices to crack or break, allowing unfiltered sunlight to pass through to the eye.
- Do not leave the telescope unsupervised, especially when children or adults unfamiliar with the correct operating procedures of your telescope are present.
HANDLING THE FILTER
When handling the filter, hold it by the outer edges of the plastic filter cell. Do not touch or make contact with the filter material. Do not use any cleaning chemicals or brushes to clean the material. If you need to remove dust from the filter, use compressed air to blow it clean. Small smudges or fingerprints will not affect the filter’s performance. When you are not using the filter, always store it in its original box.
INSTALLING THE FILTER
Before installing your filter, remove the protective cap and inspect its
surface (Figure 1) carefully under a bright light source. If you see holes or
damage to the surface of the filter, do not use it. When you are ready to
install the filter, remove your telescope’s lens cap and replace it with the
solar filter. Each filter is based on the design of your telescope’s lens cap
and should fit snugly.
Your filter fits over the lens shade of the telescope; it’s held in place with
three supplied nylon thumbscrews. Simply insert the three safety screws into
the threaded holes on the side of the filter and tighten with just enough
force to secure the filter in place. Do not overtighten.
Figure 1
REMOVE THE FINDERSCOPE
When observing the Sun, you should completely remove the optical finder scope from the telescope. Allowing the Sun to shine through an optical finder scope will result in a focused beam of sunlight that can cause burns or permanent damage to the finder scope. Never rely on the lens caps to stay secured to the finder scope. If you’re concerned you won’t be able to point the telescope at the Sun without a finder scope, don’t worry. Locating the Sun without a finder scope is very simple, as we’ll explain in the next section.
LOCATING THE SUN IN THE TELESCOPE
Without directly looking at the Sun, turn the scope so that the filter is
pointing in the Sun’s general direction. Next, turn around and look at the
telescope’s shadow on the ground. Move the scope to adjust its position until
the telescope tube’s shadow appears perfectly round. If you are slightly off,
the shadow will appear oval or elongated. When you have pointed the telescope
correctly, the Sun should be within the field of view of your lowest power
eyepiece. If it is not, look through the eyepiece and slowly move the scope in
a circular pattern. You should find it in no time.
The Sun will appear as an orange disk in the eyepiece. Use your telescope’s
focusing knobs as you normally would until the edge of the solar disk appears
sharp.
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Conforms to and meets the Transmission Requirements of ISO 12312-0,
Filters for Direct Observation of the Sun
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Product design and specifications are subject to change without prior notification. This product is designed and intended for use by those 14 years of age and older.