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Home Filters Solar Filters & Glasses Baader Solar Filter for 9.25 Inch SCT Telescopes
Baader Solar Filter for 9.25" SCT's providing a professional and secure solution to observe and image the Sun using AstroSolar Safety Film. 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 does destroy 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 planeoptical window. It sounds like a contradiction with traditional perception of quality, but AstroSolar must show slight ripples! Only when the film is being put under stress by an improper cell mount it performs just like any single side coated glass-filter made of untreated floatglass.Ideal for all Celestron 9.25" SCT telescopes including CPC925, Evolution 925 and AVX 925Baader AstroSolar® Safety Film (OD 5.0), cell mounted and quality inspected by skilled members of our staffClear white IR-rejecting front ring with reinforcing raised edges along the outer and inner circumference,designed to protect the solar filter material from contact with any sharp metal edge3 injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening.These bolts come in three different diameters, depending on the filter category (ASTF/ASSF/ASBF). Each boltfeatures injection molded rubber grip-faces, shaped to easily slide onto any telescope tube securelyNo tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts madeto contact the outside or optional (if appropriate) the inside of the optical instrument tubeNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equippedwith a machined indicator to point towards the adjustment index· additional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the userIndex scale provided beside each adjustment slot adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubesBlack sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame for blocking sunlight from passing trough the filter cell beside the filter areaWarning text printed onto the front side of each filter cell: Read the Instructions before useAll Filters feature clear white aluminum front frames, powder coated with IR (heat!) rejecting paint
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