Solar

AstroSolar.com - Everything for safe solar observation and photography

Everything for safe solar observation and photography

On this website you can purchase our products for solar observation and photography. Please visit www.astrosolar.com for detailed information about the differences of our AstroSolar Films, for Safety Instructions and Downloads, Customer reviews, image gallerys, useful Know-How, News and much more.


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  1.   Detachable sun diaphragm holder for D-ERF 135 - 160 filter-frames

    # 2459247A

    € 165.00 Price excl. German VAT tax (19%): € 138.66
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  2.   AstroSolar® Safety Film OD 5.0 (ECO-size, 20x29, 100x50, 117x117 cm)

    AstroSolar® Safety Film OD 5.0 (ECO-size, 20x29, 100x50, 117x117 cm)

    From: € 16.00 Price excl. German VAT tax (19%): € 13.45
    • AstroSolar® Safety Film 5.0 for solar observation and photography at high magnification, telescope quality, Optical Density (OD) = 5.0
    • Safe for visual solar observation (with additional optics) and imaging
    • This highest precision film consistently produces strehl ratios of 94 to 96 percent at interferometric tests – thus it performs optically like a Fluorite Triplet Lens by Carl Zeiss or Astro Physics
    • AstroSolar Safety Film is best suited for precision work with all astronomical telescopes and binoculars – just as well as for all photographic camera- and tele-lenses
    • For more than 25 years on the market, the only film-material made to not deteriorate the optical wavefront, it does allow to attain high magnification with any long-range optics without reducing sharpness or contrast of the solar surface.
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  3.   1 x Solar Viewer

    Solar Viewer AstroSolar® Silver/Gold (1pc, 10pc, 25pc, 100pc)

    From: € 4.50 Price excl. German VAT tax (19%): € 3.78
    • Safe solar observation! 100% UV-protection, 100% IR-protection, sun light intensity reduced by 99,999%
    • Our Solar Viewer AstroSolar® Silver/Gold – MADE IN GERMANY – safely protect your eyes for visual solar observation. This is THE solution to see the partial phase of Solar Eclipses or even big sunspots with your own eyes!
    • Consists of Baader AstroSolar® Silver/Gold Film, with eye-sided reflex-free viewing. Also blocks IR, thus no unpleasant feeling of warmth in the eyeball. Optical Density OD=5,0
    • CE / ISO certified: conforms to and meets the transmission requirements for eye safety: EN ISO 12312-2:2015 – Instructions in four languages (English, German, French, Spanish) on the inner side of the solar viewer
    • Available in sets of 1pc, 10pc, 25pc, 100pc with counter display, alternatively also available as Bundle: AstroSolar Safety Film and Solar Viewers (various versions available)
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  4.   BDSF: OD 3.8 Baader Digital Solar Filter (80mm - 280mm)

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

    From: € 121.00 Price excl. German VAT tax (19%): € 101.68
    • NOT suitable for visual solar observation. 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.
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  5.   Detachable sun diaphragm holder for D-ERF 70/90/110 filter-frames

    # 2459247

    € 111.00 Price excl. German VAT tax (19%): € 93.28
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  6.   Telecentric System TZ-4 (4x focal length)

    Telecentric System TZ-4 (4x focal length)

    # 2459256

    € 387.00 Price excl. German VAT tax (19%): € 325.21
    • Telecentric with 2" outer diameter and T-2 threads on both sides
    • Aplanatic, with 4x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/7,5 optics systems – free of field curvtare
    • Primarily calculated and produced for H-alpha at 656,3 nm, delivering maximum Strehl (definition brightness)
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  7.   H-alpha 0.7x Telecompressor 2" for Solar Spectrum

    # 2459259

    € 313.00 Price excl. German VAT tax (19%): € 263.03
    • gets mounted eyepiece-sided directly onto the SolarSpectrum filter and reduces the previously by the telecentric system extended focal length again by a factor of 0.7
    • Working distance: 110mm (Distance to the camera sensor)
    • 2" male threads on both sides, fitting Universal Flange Adapter #2958240 (included with SolarSpectrum H-alpha filters
    • Telecompressor is used to adjust the focal length to possibly poor seeing conditions and / or enlarging the field for photographic- or webcam applications
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  8.   Steplessly variable diaphragm 13 - 113mm

    # 2459300

    € 366.00 Price excl. German VAT tax (19%): € 307.56
    • Steplessly variable, white anodized and heat reflecting diaphragm from 13- to 113 Millimeter for our D-ERF Filters
    • For optimum adjustment of a telescope aperture when observing with an H-alpha filter of Solar Spectrum (also suitable for other brands)
    • The diaphragm has four telescope-sided M3-threads on a pitch circle radius of 60 mm to fasten also on a DIY-holder.
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  9.   TurboFilm 127 x 51 cm, ND 0,1

    # 2459350

    € 34.00 Price excl. German VAT tax (19%): € 28.57
    • Baader Turbo Film 127x51cm (Optical Density: 0,1). Use to protect your telescope and optical equipment against dust and humidity – without reducing the optical quality
    • This is the essence of AstroSolar safety film. A highest precision, crystal clear material (not “Mylar”).
    • It is a monomer film which we found after thoroughly testing more than 200 different film samples on our Zeiss autocollimator. This film was used in german Science Institutes as optical membrane for nuclear and particle physics experiments. The basic substrate has been further refined and homogenized by a proprietary annealing process that was developed exclusively for us.
    • Due to these treatments Turbo Film attains perfect homogeneity and performs equal to a 1/10 wave plane parallel optical window. In fact it has the lowest wedge error of any existing optical window. TurboFilm will protect your valuable optical equipment, close telescope tubes against dust and humidity, greatly reduce air currents – all without reducing the optical quality of your telescope.
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  10.   Solar Shade with drilled hole T-2

    # 2959279

    € 38.00 Price excl. German VAT tax (19%): € 31.93
    • A Solar Shade made from Aluminium to clamp between any T-2 connection
    • T-2 drilling (ø 42 mm)
    • Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
    • Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum
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  11.   Solar Shade with drilled hole 2"

    # 2959280

    € 39.00 Price excl. German VAT tax (19%): € 32.77
    • A Solar Shade made from Aluminium to clamp between any 2" connection
    • Drilling for 2", (ø 50,8 mm)
    • Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
    • Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum
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  12.   Solar Shade with drilled hole M68

    # 2959281

    € 40.00 Price excl. German VAT tax (19%): € 33.61
    • A Solar Shade made from Aluminium to clamp between any M68 connection
    • Drilling for M68 threads
    • Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
    • Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum
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  13. Solar Spectrum Advanced Observer (32mm clear aperture)

    Solar Spectrum Advanced Observer (32mm clear aperture)

    From: € 5,780.00 Price excl. German VAT tax (19%): € 4,857.14
    • Advanced Solar Observer Filter: Standard-Filter with a clear aperture of 32mm. Shows the full sun disc up to effective focal lengths of approx. 2700mm
    • Different Halfbandwidths available – please choose "Version"
    • incl. Pre-mounted Adapterset: 2x 2" SolarSpectrum Universal Flange #2958240, 1x 2"a to T-2i Reducer #2958242, 1x 2"a to T-2a Adapter #1508035, 2 pc. T-2 Dust caps (#2904000, #2904010)
    • Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
    • Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filter are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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  14.   Baader Double Polarizing Filter
    From: € 80.00 Price excl. German VAT tax (19%): € 67.23
    • Baader Double Polarizing Filter - Ideal for solar and planetary observations.
    • For solar work in conjunction with Baader AstroSolar Safety Film or Baader Herschel Wedge Prism (never use any eyepiece filter for solar observation without objective front filter).
    • Rotatable filter cell allows continous adjustment of brightness for comfortable viewing
    • Enhances contrast during planetary observation.
    • Non-ageing sealed coating edges.
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  15.   Baader Single Polarizing Filter

    Baader Single Polarizing Filter

    From: € 42.00 Price excl. German VAT tax (19%): € 35.29
    • Baader Polarizing Filter - Ideal filter for solar and lunar observations and contrast enhancement in planetary observations.
    • Fits 1¼ or 2" eyepieces/threads and is screwed before the eyepiece
    • Adjustable brightness when used with a Baader Hershel Wedge
    • Important Note: Polarizer will need additional filtering (eg Herschel Prism or AstroSolar Safety Film) before the eyepiece of the telescope for solar observations.
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  16. Baader Solar Continuum Filter (540nm)

    Baader Solar Continuum Filter (540nm)

    From: € 85.00 Price excl. German VAT tax (19%): € 71.43
    • Baader Solar Continuum Filter, 10nm / CWL 540nm
    • A must for owners of achromatic refractors. This filter cuts the spectral range transmitting a specific spectral range around 540nm, completely cutting out blue and red wavelengths in an area of the lens system that where the optics are at their sharpest.
    • Enhances contrast and reduces the effect of atmospheric turbulence.
    • This filter must be used in conjunction with a Baader Herschel Wedge or Baader AstroSolar Safety Film for solar observations otherwise eye or equipment damage may occur.
    • Planeoptically polished, non-ageing sealed coating edges.
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  17.   Baader D-ERF Energy Rejection Filter (75 - 180mm)

    Baader D-ERF Energy Rejection Filter (75 - 180mm)

    From: € 315.00 Price excl. German VAT tax (19%): € 264.71
    • D-ERF (Dielectric Energy Reflection Filter) in different sizes
    • Pre-filter to reduce heat during H-alpha observation with SolarSpectrum Filters
    • Plane parrallel plate (without filter cell) with IR-Cut dielectric coating
    • non-ageing sealed coating edges
    • Half-Band-Width (HBW): 80 nm – see also graph
    • Filter WITHOUT cell – 3D-printed filter cells - customized for your telescope, can be ordered in addition (not available as standalone product)
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  18.   Baader Neutral Density Filter (ND 0,6 / 0,9 / 1,8 / 3,0)

    Baader Neutral Density Filter (ND 0,6 / 0,9 / 1,8 / 3,0)

    From: € 48.00 Price excl. German VAT tax (19%): € 40.34
    • Baader Neutral Density Filters ND 0.6 / 0.9 / 1.8 / 3.0.
    • For perfect energy management during Lunar and Solar observation. Suitable for solar observing only as an additional filter!
    • If you need to reduce glare and want to use a filter ahead of the focal point (e.g. before a binocular), then the neutral density filters are just right.
    • Fine optical polish results in no loss of sharpness at high magnifications even with a filter position 20-30cm in front of the focal point.
    • Phantom Group coated. No ghosting, reflections or stray light.
    • Threaded both sides of the glass allows combination with other filters (e.g. Baader Colour Filters).
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  19.   ASBF: AstroSolar Binocular Filter OD 5.0 (50mm - 100mm)

    ASBF: AstroSolar Binocular Filter OD 5.0 (50mm - 100mm)

    From: € 38.00 Price excl. German VAT tax (19%): € 31.93
    • Safe solar observation with all types of binoculars / safe solar photography with all camera lenses
    • AstroSolar Safety Film OD 5.0, mounted stress free in high-cality cell
    • One side of filter cell shortened for use with binoculars. Two filters are mandatory for binocular observation, mentioned price is for one piece only
    • Scope of supply: ASBF Filter (Apertures 50 to 100mm) come with three centering bolts of 13mm diameter and 24 mm height, adjustable to the tube diameter of your binocular. In addition three safety straps with glue-pads and mounting instructions
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  20.   ASSF: AstroSolar Spotting Scope Filter OD 5.0 (50mm - 150mm)

    ASSF: AstroSolar Spotting Scope Filter OD 5.0 (50mm - 150mm)

    From: € 39.00 Price excl. German VAT tax (19%): € 32.77
    • Safe solar observation and photography with all spotting scopes, amateur telescopes and camera lenses
    • AstroSolar Safety Film OD 5.0, mounted stress free in high-quality cell
    • Scope of supply: ASSF Filter (Apertures 50 to 100mm) come with three centering bolts of 13mm diameter and 24 mm height, adjustable to the tube diameter of your binocular. ASSF 115 and 130 packages come with three centering bolts of 10mm diameter and 38mm length. In addition three safety straps with glue-pads and 32-page mounting instructions.
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