Orion 4.00" ID E-Series Safety Film Solar Filter | OrionTelescopes and Binoculars

Orion 4.00" ID E-Series Safety Film Solar Filter

Item #07785

Attach this affordable film solar filter to the Orion ShortTube 80 refractor or FunScope 76mm TableTop reflector to enjoy safe views of sunspots, solar eclipses, and more! The black-polymer filter displays sharp, yellow-orange views of the Sun.

More Info
- Solar filter fits the Orion ShortTube 80mm refractor and GoScope III 70mm Refractor Travel Telescopes
- Black-polymer filter material offers clear, high-contrast views of the Sun and sunspots
- Displays the Sun in a pleasing, yellow-orange color
- Stronger and more durable than thinner film solar filters
- A low-cost, high-quality alternative to pricier glass filters, designed and manufactured in the USA
This solar filter is compatible with these products:

Orion ShortTube 80-T Refractor Telescope
Orion ShortTube 80-A Refractor Telescope
Orion ShortTube 80 Refractor Telescope Optical Tube Assembly
FunScope 76mm TableTop Reflector Telescope
Orion GoScope III 70mm Refractor Travel Telescope
Orion GoScope III 70mm Refractor Telescope Kit
Orion GoScope III 70mm Refractor Travel Telescope Kit

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How to measure your telescope

Determining the Correct Orion Solar Filter for your Telescope
A full-aperture solar filter is designed to fit over the front of a telescope. It allows safe viewing of the Sun by reducing the light by 99.99% and preventing concentrated heat from entering the telescope, which could cause injury to the user or damage to equipment.

If your telescope is not listed on our solar filter chart, you can determine the size of filter needed for your telescope by taking the following steps:

Measure the maximum outside diameter (OD) of the front end of your telescope.

The solar filter sizes listed on our website refer to the inner diameter (ID) of the filter's foam-lined metal cell for Orion Safety Film Solar Filters, which slip over the front of the telescope. Choose a filter whose size matches the OD of your telescope's front end, or that is up to 0.25 inches larger than the front end.

Installing the Orion Solar Filter on Your Telescope
If your solar filter includes three thumbscrews, back them out to just inside the wall of the metal cell. Alternatively, if your filter includes foam shims, you can install them now to ensure a snug fit. Then place the solar filter over the outside of the telescope. It may require some light force to push the filter into place, but make sure it is seated completely over the telescope. Then lightly tighten the thumbscrews (if included) to further secure the filter on the telescope.

This affordable E-Series solar filter fits our fan-favorite Orion ShortTube 80mm Refractor Telescope optical tube assembly (OTA) and GoScope III 70mm Refractor Travel Telescope, 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 and lightweight, yet rigid cardboard solar filter housing. 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.

A strip of adhesive-backed felt is included to help ensure a secure friction-fit of the filter.

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.

This solar filter is designed and manufactured in the USA.

Orion assures that all solar filters are tested at specialized labs that are accredited to verify compliance with the ISO 12312-2 safety specifications for solar viewing.

CAUTION: Never look at the Sun, even for an instant, without a protective solar filter. Doing so can permanently damage your eyes.
Warranty

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 800-447-1001.
Product Support

Visit our product support section for instruction manuals and more
In The Box

Orion 4.00" ID E-Series Safety Film Solar Filter
Adhesive-backed felt strip
Important Shipping Information

Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.
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