Please note: This text was taken directly from the manufacturer.
Designed to fit snugly over the aperture of your telescope, these optical glass filters block 99.999% of incoming sunlight, allowing you to safely observe sunspots and solar granulation in the Sun's photosphere. The Sun appears in a natural, whitish color. The glass elements are machine-polished and triple-coated with nickel-chromium stainless steel for a scratch-resistant surface. Each filter has three nylon thumbscrews to ensure a snug fit to the front of your telescope or binocular. The thumbscrews complement the press-fit foam lining inside the filter's durable aluminum cell to accommodate diameters up to ﾼ" smaller than the nominal size. A tight press fit is still required for safe solar viewing. Lifetime limited warranty.
L'avis de notre spécialiste :
Le filtre solaire s'adapte par exemple aux télescopes Skywatcher N150/750, N150/1200, Omegon 150/750 EQ-3, Omegon 150/750 EQ-4 ou aux Skywatcher et Orion 6" Dobson. Pour les télescopes Omegon, veuillez retirer les inserts en caoutchouc mousse et les remplacer éventuellement par des inserts plus fins.
Le diamètre intérieur du filtre est d'environ 186 mm. Avec l'insert en caoutchouc mousse, il est d'environ 182 mm.
(Marcus Schenk )
