Solar filters AstroSolar ASTF 200mm solar filter for telescopes

The filters of the series ASTF (AstroSolar Telescope Filter) They are ideal for medium and large telescopes High-end: A really good telescope deserves a really good filter!

Safe solar observation and photography are ensured with the AstroSolar Safety solar filter film (OD 5.0) . The film is mounted without tension to prevent damage to the coating. The high-quality frame has tightly rounded edges to protect the film. Furthermore, the underside of the film is made of a plastic with the same coefficient of thermal expansion as the film itself. This guarantees that heating caused by sunlight will not create tension between the film and the filter.

He volume of supply Includes centering pins with screws and washers. The centering pins have a rubberized profile and can be adjusted to fit a wide range of tube diameters. They're incredibly secure! For those who are still skeptical, the package also includes three safety straps that can be placed over the pin heads and attached to the tube with Velcro.

Specs:

Free opening (mm) 200