| This full aperture filter has an 80mm/3.15 clear aperture Type 2+ glass filter element. Its mounted in an aluminum cell with a 95mm/3.75 internal diameter to fit scopes with a maximum diameter of 93.7mm (3-11/16). It fits all versions of the TeleVue TV-76 and Pronto and Meade ETX-60 and ETX-70 refractors. You can custom fit it to telescope tubes with an O.D. of 89mm (3.5) to 93.7mm (3-11/16) by using the extra supplied self-adhesive felt. Always remember to install the solar filter before pointing your telescope at the Sun to avoid instant and irreversible damage to your eyesight. | 
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