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Baader Solar Filter - the standard
Mounted filters with Baader AstroSolar Safety Film OD 5.0
After more than 15 years of offering AstroSolar filter films as a do-it-yourself product, this new product family of Baader Solar Filters is designed to show the optical quality of AstroSolar Safety Film, which fulfills the condition of diffraction-limited quality.
Baader Solar Filters provide a safe way to observe and photograph the sun in the best possible quality using AstroSolar® Safety Film (OD 5.0). With many home-made filters, the filter material is stretched like a drumhead to make it look like a glass filter. However, this completely destroys the image quality and makes the filter unusable for higher magnifications. AstroSolar Safety Film must be mounted absolutely tension-free in order to act like a high-precision plane-polished optical window. This may seem contradictory to the usual perception of quality, but AstroSolar must show slight ripples. Only if the filter material is exposed to tension due to an inadequate mount, it will not work any better than a simple glass filter made of optically untreated window glass.
ASTF (AstroSolar Telescope Filter) Baader Solar Filter for high-end telescopes
This family of solar filters is particularly elaborately processed. AstroSolar film must not be exposed to any stresses either during assembly or due to temperature changes. For this reason, the ASTF filters have a temperature-compensating mount. The film itself is repeatedly glued to a frame made of injection-molded material, which has the same expansion coefficient as the filter material itself. This holding frame floats freely behind the aluminum frame and is held in place by another injection-molded ring made of glass fiber-reinforced plastic to eliminate any risk of breakage. This type of temperature compensation allows the AstroSolar filter film to maintain its excellent optical quality at any temperature, be it -30°C or +50°C.
All Baader Solar filters contain
Scope of delivery: ASTF filters with apertures from 80 to 280mm include two sets of centering pins in 38mm length. 3 pins with 10mm diameter and 3 pins with 20mm diameter, adjustable for the respective diameter of the telescope tube or dew cap. Additionally 3 safety straps with self-adhesive pads, cover plugs for adjustment openings
Baader Solar Filter - the standard
Mounted filters with Baader AstroSolar Safety Film OD 5.0
After more than 15 years of offering AstroSolar filter films as a do-it-yourself product, this new product family of Baader Solar Filters is designed to show the optical quality of AstroSolar Safety Film, which fulfills the condition of diffraction-limited quality.
Baader Solar Filters provide a safe way to observe and photograph the sun in the best possible quality using AstroSolar® Safety Film (OD 5.0). With many home-made filters, the filter material is stretched like a drumhead to make it look like a glass filter. However, this completely destroys the image quality and makes the filter unusable for higher magnifications. AstroSolar Safety Film must be mounted absolutely tension-free in order to act like a high-precision plane-polished optical window. This may seem contradictory to the usual perception of quality, but AstroSolar must show slight ripples. Only if the filter material is exposed to tension due to an inadequate mount, it will not work any better than a simple glass filter made of optically untreated window glass.
ASTF (AstroSolar Telescope Filter) Baader Solar Filter for high-end telescopes
This family of solar filters is particularly elaborately processed. AstroSolar film must not be exposed to any stresses either during assembly or due to temperature changes. For this reason, the ASTF filters have a temperature-compensating mount. The film itself is repeatedly glued to a frame made of injection-molded material, which has the same expansion coefficient as the filter material itself. This holding frame floats freely behind the aluminum frame and is held in place by another injection-molded ring made of glass fiber-reinforced plastic to eliminate any risk of breakage. This type of temperature compensation allows the AstroSolar filter film to maintain its excellent optical quality at any temperature, be it -30°C or +50°C.
All Baader Solar filters contain
Scope of delivery: ASTF filters with apertures from 80 to 280mm include two sets of centering pins in 38mm length. 3 pins with 10mm diameter and 3 pins with 20mm diameter, adjustable for the respective diameter of the telescope tube or dew cap. Additionally 3 safety straps with self-adhesive pads, cover plugs for adjustment openings
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