Orion Part #07798 - to fit ED80 and 100mm refractors and 102mm Maksutovs
Inside diameter of 114.8mm
* A quality glass solar filter is essential to observe the sun safely with your telescope.
* Optical glass filter fits snugly over your telescope's aperture to block 99.999% of incoming sunlight
* Glass elements are machine-polished and triple-coated with nickel-chromium stainless steel
* Filter is mounted in an aluminum cell and supplied with foam tape liner and thumbscrews for secure fit
* Fits Skywatcher, Orion and other ED80 versions, 100mm achromats and 102mm Maksutovs