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Baader BDSF80 Digital Solar Filter 80mm, ND 3.8 - ONLY FOR IMAGING

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low Low stock (1)
Model
2459370
Weight
0.45 kg
RRP:
£72.00
Our price:
£62.00
14%

including VAT 20.00 % ( £10.33 )
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BAADER BDSF80 DIGITAL SOLAR Filter 80mm

ONLY FOR IMAGING!!!
STRICTLY NOT FOR VISUAL OBSERVATIONS!

The Baader Digital Solar Filter with PHOTO-Film OD 3.8 is a development made possible after the product launch of our Baader Solar Filters OD 5.0 in spring 2015. The filter has the same cell and mechanical specifications as our ASTF-Filter with Safety Film OD 5.0, the only difference lies within the used AstroSolar Film – our AstroSolar PHOTO Film OD 3.8 which has proven itself over the years. This film allows shortest exposure times – mainly used for digital videography and the lucky imaging technique – and thus almost “freezes” turbulences in the earths atmosphere. AstroSolar PHOTO Film OD 3.8 is NOT intended to observe the sun, only for digital imaging! Read more about the differences of our AstroSolar Films here: Differences in AstroSolar Solar Films.

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.

BDSF – Baader DIGITAL Solar Filter

This family of solar filters is made in the most elaborate way. AstroSolar must not be put under stress, neither during mounting the film, nor during any temperature change. For this reason the ASTF-Filter features a temperature compensated cell. The film itself is repeatably cemented onto an injection molded ring, whereas the substrate of that ring has the same thermal expansion like the Astro Solar Filter material itself. This free floating film-carrier ring is held onto the aluminum frame with the help of another holding ring made of fiber reinforced plastic – for a maximum of security against breaking of the cell. This temperature compensated cell enables the AstroSolar filter material to retain its excellent optical quality at any temperature – be it -30°C or +50°C.

2459370 BAADER 3.8 OD Digital Solar Filter 80mm - SRP £72.00
2459371 BAADER 3.8 OD Digital Solar Filter 100mm- SRP £82.00
2459372 BAADER 3.8 OD Digital Solar Filter 120mm - SRP £95.00
2459373 BAADER 3.8 OD Digital Solar Filter 140mm - SRP £103.00
2459374 BAADER 3.8 OD Digital Solar Filter 160mm - SRP £115.00
2459375 BAADER 3.8 OD Digital Solar Filter 180mm - SRP £129.00
2459376 BAADER 3.8 OD Digital Solar Filter 200mm - SRP £139.00
2459377 BAADER 3.8 OD Digital Solar Filter 240mm - SRP £159.00
2459378 BAADER 3.8 OD Digital Solar Filter 280mm - SRP £179.00

*** Follow this link to easily identify the Baader solar filter that best fits your model *** OR CONATCT US FOR HELP!

WARNING - THIS MATERIAL IS FOR PHOTO USE ONLY AND NOT VISUAL. ATTEMPTING TO OBSERVE THE SUN BY LOOKING THROUGH THIS FILTER MATERIAL CAN RESULT IN SEVERE EYE DAMAGE OR EVEN BLINDNESS

ASTF: (AstroSolar Telescope Filter)
This family of solar filters is made in the most elaborate way. AstroSolar must not be put under stress, neither during mounting the film, nor during any temperature change. For this reason the ASTF-Filter features a temperature compensated cell. The film itself is repeatably cemented onto an injection molded ring, whereas the substrate of that ring has the same thermal expansion like the Astro Solar Filter material itself. This free floating film carrier ring is held onto the aluminum frame with the help of another holding ring made of fiber reinforced plastic - for a maximum of security against breaking of the cell. This temperature compensated cell enables the AstroSolar filter material to retain its excellent optical quality at any temperature - be it -30°C or +50°C. ASTF 80 to 280 packages all come with two sets of centering bolts in 38 mm length ( 3 bolts w.10 mm diameter and 3 bolts w. 20mm diameter ) to cover a wide range of tube diameters.

ASSF: (AstroSolar Spotting Scope Filter)
This family of filters offers a stable and rigid solution for all spotting scopes, tele-lenses and amateur telescopes, with magnifications up to 120x. 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. ASSF 50 to 100 packages come with three centering bolts of 13mm diameter and 24mm length. ASSF 115 and 130 packages come with three centering bolts of 10mm diameter and 38mm length.

ASBF: (Astro Solar Binocular Filter)
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).
ASBF 50 to 100 packages come with three centering bolts of 13mm diameter and 24 mm height.

The complete range of the above solar filters is available from 365astronomy.

PDF Downloads

Baader Solar Instructions
Baader Solar Filter Guide
Baader Solar Filters Clamping Range

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