Check the listing for details. 145mm Solar Filter Sun Film for Celestron Nexstar 127SLT Astronomical Telescope. Condition: New. Listed at 16.19 USD. 145mm Solar Filter Sun Film for Celestron Nexstar 127SLT Astronomical Telescope Feature: This solar film is actually a new type solar filter, it is different from a traditional solar filter(Baader film), you can understand it as "PET-coated aluminum foil film" The main difference from the traditional Baader film is that the sun looks red via this filter, while via traditional Bard film looks like gray sun. At the same time, the solar film is not easy to be damaged, and it is suitable for long-term use in natural environments, especially when taking pictures, without fear of wind and rain. Specification:145mm Composite Solar FilterOuter Cover Diameter: 150mmBorder Material: PlasticFilm Material: PET+Aluminum Foil CoatingCan Be Fixed Diameter:145mmThrough Aperture: 100mmNote : This filter is outside the telescope hood holeSuitable for: Celestron 127 SLT, and those which telescope's front hood outer size is 145mm diameter. Package List: 1 x Solar Filter Film Note: If the product film is damaged, please do not use it to prevent eye damage!