Baader AstroSolar Spotting Scope Filter 130mm For 120-140mm Spotter - ASSF-130

Baader AstroSolar Spotting Scope Filter 130mm For 120-140mm Spotting Scope

• Safe solar observation with all types of Spotting Scopes / safe solar photography with all amateur telescopes and camera lenses
• AstroSolar Safety Film OD 5.0, mounted stress free in high-quality cell
• Scope of supply: ASSF Filter (Apertures 50 to 150mm) come with three centering bolts of 13mm diameter and 24 mm height, adjustable to the tube diameter of your spotting scope. In addition three safety straps with glue-pads and mounting instructions are provided

Baader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar® Safety Film Optical Density of 5.0. Many ready made filters do stretch the filter material like a drumhead in order to make it look like a piece of glass – this absolutely destroys the image quality, rendering the film useless for high magnification work. AstroSolar must be mounted entirely stress free in order to perform like a high precision flat window. It sounds like a contradiction with traditional perception of quality, but AstroSolar must show slight ripples! With this specially designed mounting, the Baader AstroSolar Telescope Filter with Optical Density of 5.0 provides exceptional optical imagery. In fact, after 15 years of offering AstroSolar film sheets as a DIY-product, this system of Baader Solar Filters™ is designed to retain the true optical quality of the diffraction-limited AstroSolar Safety Film, even used at high magnifications.