Orion Part #07737 - to fit 130mm Newtonian telescopes.
Inside cell diameter of 165mm
* 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 130mm Newtonians from Orion, Skywatcher and Celestron