4.49" ID Meade Full Aperture Glass Solar Filter
MSRP: $199.99
- Glass white-light filter that's safe for viewing the Sun with a telescope
- Mounts on front of telescope and blocks 99.999% of incoming light
- Fits optical tubes with outer diameter of 4-1/8" (106mm) to 4-3/8" (111mm)
- ISO 12312-2 compliant for safe solar viewing; made in USA
- Compatibility: ETX80 Observer, ETX90 Observer (Note: not EXT90-AT)
View the Sun safely with a Meade Full Aperture Glass Solar Filter securely mounted on the front of your telescope. This white-light filter is designed to reveal sunspots and surface granulation on the solar disk, and allows you to safely view solar eclipses and planetary transits. Note that it is not a hydrogen-alpha filter, which shows prominence and solar flare detail. For that type of solar viewing, consider upgrading to a Coronado Solar Telescope.
This solar filter is designed and manufactured in the USA. Its reflective coatings block 99.999% of incoming light; the tiny fraction that is transmitted to your eyes is completely safe. All Meade solar filters are tested at specialized labs that are accredited to verify compliance with the ISO 12312-2 safety specifications for solar viewing.
The glass filter is held in an aluminum cell, which features three safety thumbscrews to ensure a secure grip on the telescope. The filter covers the full aperture of the telescope.
This 4.49" ID (114mm) Full Aperture Glass Solar Filter fits optical tubes with outer diameter of 4-1/8" (106mm) to 4-3/8" (111mm). This refers to the outer diameter of the front cell or dew shield of the optical tube, where the filter will be mounted. The filter is compatible with these Meade telescopes:
- ETX80 Observer
- ETX90 Observer (Note: not EXT90-AT)
Warning: Meade White-Light Solar Filters are only intended for closed tube telescopes and should not be used with open truss designs such as the Meade 10, 12 and 16" LightBridge Dobsonians. Incident sunlight allowed in by the open tube design could cause damage to the telescope optics and on these designs will cause instant and irreversible eye damage potentially including permanent blindness. A light shroud is not sufficient protection from harmful solar rays.
CAUTION: Never look at the Sun, either directly or through a telescope, without a professionally made protective solar filter installed that completely covers the front of the instrument, or permanent eye damage could result.