This affordable E-Series solar filter fits our fan-favorite Orion ShortTube 80mm Refractor Telescope optical tube assembly (OTA) and FunScope 76mm TableTop Reflector, so you can enjoy safe views of the Sun without breaking the bank. The filter's black-polymer film material lets you observe sunspots, eclipses, and more in delightful detail.
The Orion 4.00" ID E-Series Safety Film Solar Filter is more durable than other, thinner film solar filters thanks to its stronger black-polymer film filter material. What's more, this low-cost filter will display the Sun in a pleasing yellow-orange color unlike the white or especially unnatural blue shade cast by some other film filters. The yellow-orange image of the Sun will reveal clear, high-contrast views of our nearest star in your telescope.
This refreshingly affordable E-Series Safety Film Solar Filter has an inside diameter (ID) of 101mm (4.00"), making it a perfect fit for our popular Orion ShortTube 80 EQ, ShortTube 80-A, ShortTube 80-T, and ShortTube 80 OTA refractor telescopes. You can also use this filter to create an ideal set-up for beginning astronomers who are interested in viewing the Sun safely by attaching it to the compatible FunScope TableTop reflector.
A strip of adhesive-backed felt is included to help ensure a secure friction-fit of the filter.
Which Solar Filter Fits My Scope?
*WARNING! When using a truss tube Dobsonian telescope for solar observing, always use a Light Shroud and a properly sized solar filter. When you install the Light Shroud make certain there are no gaps between the Shroud and the telescope where direct sunlight can reach the telescope mirror. When a truss tube telescope (equipped with a solar filter but no Light Shroud) is pointing near (not at) the Sun, direct sunlight can hit the mirror and focus on the solar filter or other portions of the telescope. This can lead to eye injury or damage to the telescope. Using a Light Shroud protects your telescope from peripheral sunlight.
Before using any telescope for solar observing, make sure to install all dustcaps or other protective covers on all optical components such as finder scopes to keep sunlight from passing through them. Glancing through an uncovered optical system, even for an instant, can cause permanent eye damage. Always install protective caps on all optical instruments if left out during daylight hours.
CAUTION: Never look at the Sun, even for an instant, without a protective solar filter. Doing so can permanently damage your eyes.
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.
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