Are the glass and thin film solar filters safe?Yes, all of our filters are safe, blocking up to 99.99% of the sun’s rays, perfect for unlimited visual use as well as photography. These filters are rated with a neutral density of 5. With proper care and handling, our filters will last for many years. Spectrum Telescope meet ISO Certified 12312-2 while meeting or exceeding International Standards for safety.Approved by American Astronomical Society as reputable vendor for safe solar filters.What can I expect to see using these filters?You can expect to see a solar eclipse, sunspots, and surface granulation.Do the telescope optics become heated or can they be damaged?While sunlight may warm your telescope, before heat or intense light can enter the telescope, they are blocked. The light that transmits through the filter is very little and will not damage or heat your telescope. Reading the instructions that come with each of our products will ensure that you’re using them safely and as intended which will prevent damage.What is your thin film made from?The market is filled with several different types of thin films today that are used for solar viewing. They are made from Baader, Black Polymer, Mylar, and others. The thin film we use is a black plastic polymer that is .002” thick and comes with a ND (neutral density) of 5 making it perfectly safe to view solar activity. When you view the sun, you’ll see a sharp image of natural orange instead of the blue or white like other brands.Is there a difference between and off axis solar filter and a full aperture?Light is blocked with an off axis solar filter into the telescope and allow the light only into a small portion of off centered glass. With the aperture reduced, visibility of atmospheric turbulence during the day is reduced as well. Whereas most of the light is let into the telescope with a full aperture filters because your telescope is allowed the full aperture for viewing. By doing so, the best daytime viewing is possible if there is very little to no atmospheric turbulence. When turbulence is present, you can place a mask over the end of the filter and reduce the aperture effectively. By using a mask, you can change the aperture range effectively to anything that is less than a full aperture based on mask size.Our Return Policy Spectrum Telescope Products offers a 90 DAY GUARANTEE when the following instructions are followed: All of our products are new product and are shipped in good condition in packaging intended for them to arrive in good condition. You can return any of our products within 90 days for any reasons and receive a refund if the instructions have been followed. Customers pay shipping costs to return any product.Product must be returned in original packing and packaged the same way it was received. Your return address must be clearly marked on your package. Return orders to the following address:Spectrum Telescope
959 Durkin Street
Camarillo CA 93010
The following information must be included with all returns:
Your Complete Address
Reason for Return
Purchase price is refunded upon our receiving the package with the refund amount being credited back to your credit card, PayPal, or a business check will be mailed.