Description

Note: The product will have ASTF printed on both the box and bezel on the filter. The BSDF will have stickers to indicate it is BSDF and fitted with the OD 3.8 AstroSolar Safety Film.
NOT suitable for visual solar observation- permanent eye injury will result from any visual use, including use of optical viewfinders on DSLR cameras. Only use for digital imaging with all high-end telescopes and extreme tele-lenses (lucky imaging technique). Suitable for highest magnifications and detailed imaging of individual sunspots
AstroSolar PHOTO Film OD 3.8, mounted stress free in temperature compensated cell
No astigmatism during winter observation or with temperature changes in summer
Scope of Supply: BDSF (ASTF) Filter with apertures from 80 to 180mm (200- 280mm not yet available) come with two sets of centering bolts in 38mm length. 3 bolts with 10mm diameter and 3 bolts with 20mm diameter, adjustable to the tube diameter of your telescope or dew cap. In addition three safety straps with glue-pads and three rubber plugs to cover the holes that are not used, mounting instructions.

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!

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.

ASTF/BDSF (AstroSolar Telescope Filter)- Baader DIGITAL Solar Filter for high-end Telescopes

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.

All Baader Solar Filters feature:

Only for BDSF-Filter: original Baader AstroSolar® Photo Film (OD 3.8), cell mounted and quality inspected by skilled members of our staff
clear 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 edge
3 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 bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube- but to come off very hard
no tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube
non-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with 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 user
index scale provided beside each adjustment slot- adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes
black 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 area
only for ASTF/BDSF-filters: rubber plugs supplied as cover for closing unused adjustment slots in the aluminum frame
three security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (gust of wind asf)
warning text printed onto the front side of each filter cell: Read the Instructions before use
cardboard gift box fit for safely shipping the filter

Safety Information

Safety Warning - How to Protect Your Eyes (link to Safety Information)

Safety Precautions - How to Prevent Accidents (link to Safety Precautions)

Specifications

80mm

FILTER SIZE	80 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459370
EAN CODE	4047825103420
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	80
OUTER DIAMETER	170
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	110- 140
INNER CLAMPINGRANGE (10MM BOLTS)	130- 160
OUTER CLAMPINGRANGE (20MM BOLTS)	100- 130
INNER CLAMPINGRANGE (20MM BOLTS)	140- 170
SOLAR WAVELENGTH	Whitelight (integral light)

100mm

FILTER SIZE	100 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459371
EAN CODE	4047825103437
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	100
OUTER DIAMETER	190
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	130- 160
INNER CLAMPINGRANGE (10MM BOLTS)	150- 180
OUTER CLAMPINGRANGE (20MM BOLTS)	120- 150
INNER CLAMPINGRANGE (20MM BOLTS)	160- 190
SOLAR WAVELENGTH	Whitelight (integral light)

120mm

FILTER SIZE	120 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459372
EAN CODE	4047825103444
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	120
OUTER DIAMETER	210
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	150- 180
INNER CLAMPINGRANGE (10MM BOLTS)	170- 200
OUTER CLAMPINGRANGE (20MM BOLTS)	140- 170
INNER CLAMPINGRANGE (20MM BOLTS)	180- 210
SOLAR WAVELENGTH	Whitelight (integral light)

140mm

FILTER SIZE	140 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459373
EAN CODE	4047825103451
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	140
OUTER DIAMETER	230
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	170- 200
INNER CLAMPINGRANGE (10MM BOLTS)	190- 220
OUTER CLAMPINGRANGE (20MM BOLTS)	160- 190
INNER CLAMPINGRANGE (20MM BOLTS)	200- 230
SOLAR WAVELENGTH	Whitelight (integral light)

160mm

FILTER SIZE	160 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459374
EAN CODE	4047825103468
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	160
OUTER DIAMETER	250
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	190- 220
INNER CLAMPINGRANGE (10MM BOLTS)	210- 240
OUTER CLAMPINGRANGE (20MM BOLTS)	180- 210
INNER CLAMPINGRANGE (20MM BOLTS)	220- 250
SOLAR WAVELENGTH	Whitelight (integral light)

180mm

FILTER SIZE	180 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459375
EAN CODE	4047825103475
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	180
OUTER DIAMETER	270
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	210- 240
INNER CLAMPINGRANGE (10MM BOLTS)	230- 260
OUTER CLAMPINGRANGE (20MM BOLTS)	200- 230
INNER CLAMPINGRANGE (20MM BOLTS)	240- 270
SOLAR WAVELENGTH	Whitelight (integral light)

200mm

FILTER SIZE	200 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459376
EAN CODE	4047825103482
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	200
OUTER DIAMETER	290
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	230- 260
INNER CLAMPINGRANGE (10MM BOLTS)	250- 280
OUTER CLAMPINGRANGE (20MM BOLTS)	220- 250
INNER CLAMPINGRANGE (20MM BOLTS)	260- 290
SOLAR WAVELENGTH	Whitelight (integral light)

240mm

FILTER SIZE	240 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459377
EAN CODE	4047825103499
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	240
OUTER DIAMETER	330
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	270- 300
INNER CLAMPINGRANGE (10MM BOLTS)	290- 320
OUTER CLAMPINGRANGE (20MM BOLTS)	260- 290
INNER CLAMPINGRANGE (20MM BOLTS)	300- 330
SOLAR WAVELENGTH	Whitelight (integral light)

280mm

FILTER SIZE	280 mm
MANUFACTURER	Baader Planetarium
SKU (#)	2459378
EAN CODE	4047825103505
USAGE	Digitale Sonnenfotografie bei hØ¶chsten VergrØ¶Øerungen und kurzen Belichtungszeiten. Nicht visuell geeignet
ASTROSOLAR FILM	AstroSolar Foto Folie
OPTICAL DENSITY	3.8
INNER DIAMETER / CLEAR APERTURE (MM)	280
OUTER DIAMETER	370
FILTER MOUNTED?	Yes
OUTER CLAMPINGRANGE (10MM BOLTS)	310- 340
INNER CLAMPINGRANGE (10MM BOLTS)	330- 360
OUTER CLAMPINGRANGE (20MM BOLTS)	300- 330
INNER CLAMPINGRANGE (20MM BOLTS)	340- 370
SOLAR WAVELENGTH	Whitelight (integral light)

Downloads

Baader Solar Filter Manual

»¿Baader Solar Filters Clamping Range

Testreview- The Baader ASTF Solar Whitelight Filter- W. Paolini

Testreview ATT-Magazine: Baader Solar Filters (BSF)

Baader Solar Filter

Filters

BDSF: OD 3.8 Baader Digital Solar Filter (80mm- 280mm)

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