Baader AstroSolar Binocular Filter OD 5.0 - 50-100mm
Description
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Safe solar observation with all types of binoculars / safe solar photography with all camera lenses. The AstroSolar filter material is likewise mounted onto a plastic ring whereas the plastic ring itself works as stabilizing element for the filter cell. This still plastic ring is mounted onto the aluminum front frame. The thermal expansion coefficient of the plastic and the film are similar. This category is essentially similar to the ASSF in terms of mechanics. The only difference is that one side is cut off in order to make them usable on any binocular – even when the bridge is nearly closed. (depending on the binocular type).
Alpine # | Baader # |
Aperture (mm/inch) |
Ideally Suited forAperture Range (mm) |
Clamping Range Inner Tube Dia |
Clamping Range Outer Tube Dia |
ASBF-50 | 2459325 | 50 / 2.0 | 40 - 60 | 81 - 96 | 55 - 70 |
ASBF-60 | 2459326 | 60 / 2.4 | 50 - 70 | 91 - 106 | 65 - 80 |
ASBF-70 | 2459327 | 70 / 2.8 | 60 - 80 | 101 - 116 | 75 - 90 |
ASBF-80 | 2459328 | 80 / 3.2 | 70 - 90 | 111 - 126 | 85 - 100 |
ASBF-100 | 2459329 | 100 / 3.9 | 90 - 110 | 131 - 146 | 105 - 120 |
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.
Baader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar Safety Film. Many ready-made filters stretch the filter material like a drumhead in order to make it look like a piece of glass – this absolutely estroys 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 the traditional perception of quality, but AstroSolar must show slight ripples! When the film is put under stress by an improper cell mount its optical quality is degraded and it tehn performs just like a common coated glass-filter made of untreated floatglass.
With AstroSolar™ the Sun appears in it’ s real color – neutral white. Other films and most glass filters produce a blurry bluish, yellow-orange, or reddish Solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is very hard to see faculae regions which are visible predominantly in the blue wing of the spectrum.
Baader Solar Filters are available in 3 types; ASTF - AstroSolar Telescope Filter, ASSF - AstroSolar Spotter Filter, and ASBF - AstroSolar Binocular Filter. With a total 21 sizes, there is a Baader Solar Filter available to fit practically every Telescope, Spotting Scope and Binocular.
Safety Warning-How to Protect Your Eyes(link to Safety Information)
Safety Precautions - How to Prevent Accidents(link to Safety Precautions)
Specifications
FILTER SIZE | 50 mm |
---|---|
MANUFACTURER | Baader Planetarium |
SKU (#) | 2459325 |
EAN CODE | 4047825033079 |
USAGE | Visual solar observation and imaging |
ASTROSOLAR FILM | AstroSolar Safety Film |
OPTICAL DENSITY | 5.0 |
INNER DIAMETER / CLEAR APERTURE (MM) | 50 |
OUTER DIAMETER | 110 |
FILTER MOUNTED? | Yes |
OUTER CLAMPINGRANGE (13MM BOLTS) | 55 – 70 |
INNER CLAMPINGRANGE (13MM BOLTS) | 81 – 96 |
SOLAR WAVELENGTH | Whitelight (integral light) |
FILTER SIZE | 60 mm |
---|---|
MANUFACTURER | Baader Planetarium |
SKU (#) | 2459326 |
EAN CODE | 4047825033086 |
USAGE | Visual solar observation and imaging |
ASTROSOLAR FILM | AstroSolar Safety Film |
OPTICAL DENSITY | 5.0 |
INNER DIAMETER / CLEAR APERTURE (MM) | 60 |
OUTER DIAMETER | 120 |
FILTER MOUNTED? | Yes |
OUTER CLAMPINGRANGE (13MM BOLTS) | 65 – 80 |
INNER CLAMPINGRANGE (13MM BOLTS) | 91 – 106 |
SOLAR WAVELENGTH | Whitelight (integral light) |
FILTER SIZE | 70 mm |
---|---|
MANUFACTURER | Baader Planetarium |
SKU (#) | 2459327 |
EAN CODE | 4047825033093 |
USAGE | Visual solar observation and imaging |
ASTROSOLAR FILM | AstroSolar Safety Film |
OPTICAL DENSITY | 5.0 |
INNER DIAMETER / CLEAR APERTURE (MM) | 70 |
OUTER DIAMETER | 130 |
FILTER MOUNTED? | Yes |
OUTER CLAMPINGRANGE (13MM BOLTS) | 75 – 90 |
INNER CLAMPINGRANGE (13MM BOLTS) | 101 – 116 |
SOLAR WAVELENGTH | Whitelight (integral light) |
FILTER SIZE | 80 mm |
---|---|
MANUFACTURER | Baader Planetarium |
SKU (#) | 2459328 |
EAN CODE | 4047825033109 |
USAGE | Visual solar observation and imaging |
ASTROSOLAR FILM | AstroSolar Safety Film |
OPTICAL DENSITY | 5.0 |
INNER DIAMETER / CLEAR APERTURE (MM) | 80 |
OUTER DIAMETER | 140 |
FILTER MOUNTED? | Yes |
OUTER CLAMPINGRANGE (13MM BOLTS) | 85 – 100 |
INNER CLAMPINGRANGE (13MM BOLTS) | 111 – 126 |
SOLAR WAVELENGTH | Whitelight (integral light) |
FILTER SIZE | 100 mm |
---|---|
MANUFACTURER | Baader Planetarium |
SKU (#) | 2459329 |
EAN CODE | 4047825033116 |
USAGE | Visual solar observation and imaging |
ASTROSOLAR FILM | AstroSolar Safety Film |
OPTICAL DENSITY | 5.0 |
INNER DIAMETER / CLEAR APERTURE (MM) | 100 |
OUTER DIAMETER | 160 |
FILTER MOUNTED? | Yes |
OUTER CLAMPINGRANGE (13MM BOLTS) | 105 – 120 |
INNER CLAMPINGRANGE (13MM BOLTS) | 131 – 146 |
SOLAR WAVELENGTH | Whitelight (integral light) |
How can I observe the eclipse in full safety without buying any commercial product?
Baader Solar Filters Clamping Range
Testreview - The Baader ASTF Solar Whitelight Filter - W. Paolini