This affordable E-Series solar filter fits our fan-favorite Orion ShortTube 80mm Refractor Telescope optical tube assembly (OTA) and FunScope 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.
CAUTION: Never look at the Sun, even for an instant, without a protective solar filter. Doing so can permanently damage your eyes.
GSO 57-42T adapter for Afocal Photography/Camera Projection Eyepiece FF548
GSO M57-to-T Thread Adapter. Has female M57 threads on one side to attach to GSO's 2" Camera Projection SuperView eyepieces. The other side has a standard male T/T-2 thread that can be attached to T-2 extension tubes or T-rings. Made of aluminum and anodized black.
This extra Telrad base is for those who have more than one telescope, and who want to transfer their Telrad finder from scope to scope to save the expense of buying a second Telrad. It comes with double-faced tape for mounting to metal tubes, plus screw holes should you want to attach it to a Sonotube Dobsonian or equatorial mount optical tube. The two plastic locking thumbscrews make removing and attaching a Telrad to the already -installed base a matter of moments. The dovetail bracket positions the Telrad accurately and repeatably each time the finder is installed, making recollimation rarely necessary.
The Super-wide Angle Eyepiece eyepieces offer a quality 5-element Plossl optical design at a super affordable price. Fixed folding rubber eyecup allows easy use with or without eyewear. Anti-reflection fully multi-coated optics ensure bright and clear high-images at any magnification, with true color rendition.