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White Light

White-light solar observation is the most accessible branch of astronomy and the least forgiving of shortcuts. A correct full-aperture filter shows sunspots, granulation and faculae safely in daylight; an incorrect one can cause permanent eye injury in less than a second. David Astro carries white-light solar filters in Canada, stocked domestically and ready to ship.

We will not supply an unsafe configuration. If you are unsure whether a filter suits your telescope, ask us first — this is the one category where guessing is genuinely dangerous.

Filters

CA$67.00 - CA$117.00
CA$67.00 - CA$117.00
CA$67.00 - CA$117.00
CA$67.00

Baader AstroSolar Binocular Filter OD 5.0 - 50-100mm

Options available
17 variants in stock

Optical Density 5.0 AstroSolar Safety Film Enables direct, safe viewing of the Sun Available in 50mm, 60mm, 70mm, 80mm, and 100mm clear aperture m...

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CA$67.00 - CA$117.00
CA$67.00 - CA$117.00
CA$67.00 - CA$117.00
CA$67.00
CA$53.00 - CA$53.00
CA$53.00
CA$53.00 - CA$53.00
CA$53.00

Baader AstroSolar Photo Film OD 3.8

BAA-2459278

Optical Density 3.8: Specifically engineered for high-speed solar photography, not visual observation. Enables Short Exposures: Allows for shutt...

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CA$53.00 - CA$53.00
CA$53.00
CA$53.00 - CA$53.00
CA$53.00
CA$24.00 - CA$459.00
CA$24.00 - CA$459.00
CA$24.00 - CA$459.00
CA$24.00

Baader Astrosolar Safety Film OD 5.0

Options available
9 variants in stock

Optical Density 5.0 for safe, direct visual solar observation Does not degrade optical wavefront, preserving sharpness and contrast Available in m...

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CA$24.00 - CA$459.00
CA$24.00 - CA$459.00
CA$24.00 - CA$459.00
CA$24.00
CA$69.00 - CA$175.00
CA$69.00 - CA$175.00
CA$69.00 - CA$175.00
CA$69.00

Baader AstroSolar Spotting Scope Filter OD 5.0 - 50-150mm

Options available
9 variants in stock

Optical Density 5.0 for safe, direct solar viewing Available in 7 sizes from 50mm to 150mm Fits spotting scopes, binoculars, and small telescopes ...

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CA$69.00 - CA$175.00
CA$69.00 - CA$175.00
CA$69.00 - CA$175.00
CA$69.00
CA$129.00 - CA$314.00
CA$129.00 - CA$314.00
CA$129.00 - CA$314.00
CA$129.00

Baader AstroSolar Telescope Filter OD 5.0 - 80-280mm

Options available
27 variants in stock

Enables safe, high-resolution solar viewing and imaging Optical Density 5.0, blocking 99.999% of sunlight Available in apertures from 80mm to 280m...

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CA$129.00 - CA$314.00
CA$129.00 - CA$314.00
CA$129.00 - CA$314.00
CA$129.00
CA$415.00 - CA$415.00
CA$415.00
CA$415.00 - CA$415.00
CA$415.00

Baader Calcium GEN-II Filter - 1.25"

BAA-2961590

Calcium GEN-II Solar Filter 1.25" Barrel Size Reveals Chromospheric Detail Camera-Use Only (Not for Visual) Requires Full-Aperture Pre-Filter D...

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CA$415.00 - CA$415.00
CA$415.00
CA$415.00 - CA$415.00
CA$415.00
CA$838.00 - CA$940.00
CA$838.00 - CA$940.00
CA$838.00 - CA$940.00
CA$838.00

Baader Cool-Ceramic Safety Herschel Prism (Visual/Photographic)

Options available
2 variants in stock

Professional-grade white-light solar observing and imaging Cool-Ceramic prism design for safe heat dissipation Integrated solar finder for rapid, ...

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CA$838.00 - CA$940.00
CA$838.00 - CA$940.00
CA$838.00 - CA$940.00
CA$838.00
CA$459.00 - CA$2,416.00
CA$459.00 - CA$2,416.00
CA$459.00 - CA$2,416.00
CA$459.00

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

Options available

Full-aperture solar energy rejection filter Required for use with rear-mounted H-alpha etalon systems Advanced, hard dielectric IR-cut coatings Pr...

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CA$459.00 - CA$2,416.00
CA$459.00 - CA$2,416.00
CA$459.00 - CA$2,416.00
CA$459.00
CA$162.00 - CA$309.00
CA$162.00 - CA$309.00
CA$162.00 - CA$309.00
CA$162.00

Baader Digital Solar Filter 3.8 OD - 80-280mm

Options available

Optical Density 3.8 for ultra-short photographic exposures Available in sizes from 80mm to 280mm Tension-free film mounting for diffraction-limite...

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CA$162.00 - CA$309.00
CA$162.00 - CA$309.00
CA$162.00 - CA$309.00
CA$162.00
Baader Planetarium ASBF 50 – AstroSolar® Binocular Filter OD 5.1
CA$75.00 - CA$129.00
CA$75.00 - CA$129.00
CA$75.00 - CA$129.00
CA$75.00

Baader Planetarium ASBF – AstroSolar® Binocular Filter OD 5.1 – ClearWhite

Options available

Available for 50, 60, 70, 80 & 100mm Aperture Binoculars AstroSolar® White-Light Film Optical Density (OD) 5.1 for Visual Safety Clear, Neutra...

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CA$75.00 - CA$129.00
CA$75.00 - CA$129.00
CA$75.00 - CA$129.00
CA$75.00
Baader Planetarium ASSF 50 – AstroSolar® Spotter Filter OD 5.1 – ClearWhite
CA$76.00 - CA$193.00
CA$76.00 - CA$193.00
CA$76.00 - CA$193.00
CA$76.00

Baader Planetarium ASSF – AstroSolar® Spotter Filter OD 5.1 – ClearWhite

Options available

Available in seven sizes from 50mm to 150mm for spotting scopes, binoculars, finders and small telescopes Optical Density 5.1 for safe, direct vis...

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CA$76.00 - CA$193.00
CA$76.00 - CA$193.00
CA$76.00 - CA$193.00
CA$76.00
Baader Planetarium ASTF 80 – AstroSolar® Telescope Filter OD 5.1 – ClearWhite
CA$142.00 - CA$344.00
CA$142.00 - CA$344.00
CA$142.00 - CA$344.00
CA$142.00

Baader Planetarium ASTF – AstroSolar® Telescope Filter OD 5.1 – ClearWhite

Options available

Available in nine sizes from 80mm to 280mm (ASTF 80 to ASTF 280) to suit your telescope AstroSolar® Safety Film with Optical Density 5.1 Diffracti...

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CA$142.00 - CA$344.00
CA$142.00 - CA$344.00
CA$142.00 - CA$344.00
CA$142.00
Baader Planetarium AstroSolar® ClearWhite Safety Folie OD 5.1, 100x50cm
CA$168.00 - CA$576.00
CA$168.00 - CA$576.00
CA$168.00 - CA$576.00
CA$168.00

Baader Planetarium AstroSolar® ClearWhite Safety Film OD 5.1

Options available

Certified AstroSolar® Safety Film Optical Density 5.1 for Visual Use Available as 100x50cm or Giant-size 117x117cm Sheet "ClearWhite" Neutral Colo...

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CA$168.00 - CA$576.00
CA$168.00 - CA$576.00
CA$168.00 - CA$576.00
CA$168.00
CA$279.00 - CA$279.00
CA$279.00
CA$279.00 - CA$279.00
CA$279.00

Baader Solar Continuum Double Stacked Filter - 1.25"

BAA-2458392

1¼" Double Stacked Baader Solar Continuum Filter. 8nm / CWL 540nm. Includes 1x AstroSolar®Photo Film OD 3.8 20x29 cm. The filter includes two Baad...

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CA$279.00 - CA$279.00
CA$279.00
CA$279.00 - CA$279.00
CA$279.00
CA$172.00 - CA$289.00
CA$172.00 - CA$289.00
CA$172.00 - CA$289.00
CA$172.00

Baader Solar Continuum Filter

Options available
3 variants in stock

Maximizes contrast on solar granulation, faculae, and sunspot details Dramatically reduces chromatic aberration in achromatic refractors Functions...

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CA$172.00 - CA$289.00
CA$172.00 - CA$289.00
CA$172.00 - CA$289.00
CA$172.00
CA$456.00 - CA$456.00
CA$456.00
CA$456.00 - CA$456.00
CA$456.00

Baader SolarSpectrum 0.7x Telecompressor - 2"

BAA-2459259

0.7x Focal Reduction Factor Designed for SolarSpectrum H-alpha Filters Corrects for f/30 Telecentric Systems 2" Barrel and Threading Enables Full-...

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CA$456.00 - CA$456.00
CA$456.00
CA$456.00 - CA$456.00
CA$456.00
CA$533.00 - CA$533.00
CA$533.00
CA$533.00 - CA$533.00
CA$533.00

Baader SolarSpectrum Research Grade 0.4x Telecompressor - 2"

BAA-2459260

Reduces effective focal ratio by a factor of 0.4x Designed for Baader Solar Spectrum filters requiring an f/30 light path Enables viewing of the f...

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CA$533.00 - CA$533.00
CA$533.00
CA$533.00 - CA$533.00
CA$533.00
CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00

Celestron EclipSmart Solar Filter - 6” SCT

CEL-94243

Designed for Celestron 6" Schmidt-Cassegrain Telescopes Provides a 128.5mm (5.06") clear aperture for safe solar viewing ISO 12312-2:2015(E) compl...

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CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00
CA$104.00 - CA$104.00
CA$104.00
CA$104.00 - CA$104.00
CA$104.00

Celestron EclipSmart Solar Filter - 8” SCT and EdgeHD

CEL-94244

Instantly adapts your Celestron 8” Schmidt-Cassegrain or EdgeHD telescope for solar viewing Conforms to the ISO 12312-2:2015(E) international safe...

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CA$104.00 - CA$104.00
CA$104.00
CA$104.00 - CA$104.00
CA$104.00
CA$770.00 - CA$2,303.00
CA$770.00 - CA$2,303.00
CA$770.00 - CA$2,303.00
CA$770.00

Daystar Energy Rejection Filter for Refractor - 80-150mm ERF Glass

Options available

Full-aperture solar energy rejection filter for refractors Available in 80mm, 100mm, 130mm, and 150mm clear apertures Rejects harmful UV and IR ra...

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CA$770.00 - CA$2,303.00
CA$770.00 - CA$2,303.00
CA$770.00 - CA$2,303.00
CA$770.00
CA$770.00 - CA$1,673.00
CA$770.00 - CA$1,673.00
CA$770.00 - CA$1,673.00
CA$770.00

Daystar Energy Rejection Filter for SCT - 63-125mm Off-Axis ERF Glass

Options available

Off-axis energy rejection filter (ERF) for Schmidt-Cassegrain Telescopes Safely isolates a smaller aperture for high-contrast solar viewing Availa...

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CA$770.00 - CA$1,673.00
CA$770.00 - CA$1,673.00
CA$770.00 - CA$1,673.00
CA$770.00
CA$21.00 - CA$98.00
CA$21.00 - CA$98.00
CA$21.00 - CA$98.00
CA$21.00

Daystar SolarLite Film Sheet

Options available

SolarLite Film Sheet — Available in Multiple Sizes Certified ISO 12312-2:2015 Safe for Solar Viewing Thousand Oaks SolarLite Polymer Material Idea...

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CA$21.00 - CA$98.00
CA$21.00 - CA$98.00
CA$21.00 - CA$98.00
CA$21.00
Daystar Universal Lens Filter - 50mm
CA$24.00 - CA$42.00
CA$24.00 - CA$42.00
CA$24.00 - CA$42.00
CA$24.00

Daystar Universal Lens Filter

Options available

Universal Fit for Camera Lenses & Small Scopes Safe for Direct Solar Viewing & Imaging Features ISO-Compliant Solar Filter Film Renders th...

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CA$24.00 - CA$42.00
CA$24.00 - CA$42.00
CA$24.00 - CA$42.00
CA$24.00
Daystar Universal Lens Filter - 3 Pack
CA$63.00 - CA$63.00
CA$63.00
CA$63.00 - CA$63.00
CA$63.00

Daystar Universal Lens Filter - 3 Pack

DAY-U50270

Contents: Two 50mm filters and one 70mm filter Compatibility: Fits camera lenses, binoculars, and small spotting scopes Safety Standard: ISO 12312...

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CA$63.00 - CA$63.00
CA$63.00
CA$63.00 - CA$63.00
CA$63.00

Safe White-Light Solar Filtration

Every safe method blocks the sunlight before it enters the telescope, or diverts almost all of its energy out of the optical path. Nothing at the eyepiece end is acceptable.

  • Full-aperture film filters: Metallized polymer film in a cell fitted over the objective, giving a neutral or slightly blue-white solar image at very low cost.
  • Full-aperture glass filters: Coated optical glass, more durable and often giving a warmer image, at higher cost and weight.
  • Herschel wedges: For refractors only, diverting the great majority of solar energy out of the back of the wedge and passing a small fraction to the eyepiece with additional filtration.
  • Solar finders: Pinhole or projection finders that let you aim safely, since an unfiltered optical finder is itself a hazard.
  • Cell fit and security: A filter that can be lifted off by wind is a serious risk. Proper cells fit snugly and are secured, not balanced in place.
  • Aperture stops: Off-axis stops for large telescopes, reducing aperture and heat load while improving the image in daytime seeing.

Why Choose David Astro for White-Light Solar Filters

Authenticity and correct fit are safety requirements here, not preferences.

  • Genuine filters only: As an authorized dealer we supply manufacturer product with verified coatings, which matters in a category where counterfeit solar film has circulated.
  • Front-mounted, full-aperture, always: We do not supply eyepiece-end solar filters under any circumstances, because they sit where the telescope has concentrated the full solar energy.
  • Fit measured properly: We size the cell to your telescope's actual outer diameter including any dew shield, so it seats securely and cannot be dislodged.
  • Herschel wedge suitability checked: Wedges are for unobstructed refractors only, and we confirm your telescope is appropriate before supplying one.
  • Ships from Canada: In-stock filters delivered domestically without duties or brokerage fees.

White-Light Solar Filters in Canada — Frequently Asked Questions

How do I check a solar filter is still safe?
Hold it up to a bright lamp and look for pinholes, scratches, creases or coating separation. Any visible defect means replacement. Never repair a solar filter with tape.
Film or glass?
Film gives excellent image quality for very little money and is lighter on the front of the tube. Glass is more durable and less easily damaged in handling. Both are safe when genuine and undamaged.
Can I use a Herschel wedge on my Schmidt-Cassegrain?
No. Herschel wedges are for unobstructed refractors only. In a catadioptric or reflector, the concentrated energy inside the closed tube can cause damage before it ever reaches the wedge.
Do I need a special finder?
Yes. An unfiltered finder scope is a serious hazard when pointed at the Sun. Use a pinhole or shadow-projection solar finder, or cap the finder entirely and aim by the telescope's shadow.

Observing the Sun safely?

Tell us your telescope and we will confirm the correct filter and fit. Genuine product, Canadian stock.