Seymour Solar Telescope Filter (SF500) for Celestron: FirstScope 76, NexStar 4/4SE, C4, 102HD; Meade: ETX 105, DSX 102; Orion: ED 80/100, StarMax/Apex 102, AstroView 100, SkyView Pro 100; Tele Vue 101, 102; Questar 4.75"
This is a safe full aperture solar filter. This means that it allows the most light possible into the telescope because it allows the full aperture of your telescope to be viewed. The full aperture allows the best possible daytime viewing when there is minimal atmospheric turbulence. If turbulence is present a mask can be put over the end of the filter to effectively reduce the aperture. This premium solar filter has an aluminum cell that is secured to the tube end of the telescope with a three nylon thumb screws. The clear aperture is made with high quality hand selected and inspected reflective coated glass. This 5" full aperture glass solar filter is the highest quality, most durable solar filter on the market. The sun is safely viewed in a natural yellowish-orange image. The neutral density is 5 - 5.5. The filter can be used for direct viewing through the telescope or for photography. It will fit a telescope with a tube end (opposite the eyepiece) diameter of 4 7/8"(124mm) to 4 5/8"(117mm). You can measure the diameter of the end of your telescope to see if this filter will fit. This filter is new in the box in plastic. The filter box is foam lined for protection and shock absorption during handling. It is durable enough to store the filter while not in use. With the filter comes instructions for use and care.