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Astronomie solaire

The Sun is the only object in astronomy that changes visibly within an hour, and the only one that can permanently damage your eyes in a fraction of a second. Done with proper equipment, solar observing is the most accessible branch of the hobby — no dark sky, no late night, no travel. David Astro carries solar astronomy products in Canada: hydrogen-alpha telescopes, white-light filters, Calcium-K modules, wedges and dedicated solar accessories, in Canadian inventory and shipped domestically.

Safety here is absolute rather than a matter of degree, and we will not sell an unsafe combination. If you are unsure whether a filter or setup is appropriate, ask us before you point anything at the Sun.

Filtres

Daystar Universal Lens Filter - Two 50mm + One 90mm Combo Pack
$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95

Daystar Universal Lens Filter - Two 50mm + One 90mm Combo Pack

DAY-U50290

Includes two 50mm filters and one 90mm filter ISO 12312-2:2015 certified for direct solar viewing Made with Thousand Oaks Density-5 SolarLite film...

Afficher tous les détails
$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95
Daystar Universal Lens Filter for Binoculars - Set of Two - 50mm
$24.95 - $39.95
$24.95 - $39.95
$24.95 - $39.95
$24.95

Daystar Universal Lens Filter for Binoculars - Set of Two

Options available

Set of two filters for binoculars, spotting scopes and camera lenses Choice of 50mm, 70mm or 90mm clear aperture Fits optics from 50mm to 109mm ou...

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$24.95 - $39.95
$24.95 - $39.95
$24.95 - $39.95
$24.95
Daystar Universal Lens Filter with 5 Eclipse Glasses - 50mm
$21.95 - $34.95
$21.95 - $34.95
$21.95 - $34.95
$21.95

Daystar Universal Lens Filter with 5 Eclipse Glasses

Options available

Available in 50mm, 70mm & 90mm Apertures Passes ISO 12312-2 Safety Standards Renders the Sun in a Crisp Orange Hue Foldable, Glare-Reducing Ca...

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$21.95 - $34.95
$21.95 - $34.95
$21.95 - $34.95
$21.95
Daystar Universal Solar Finder
$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

Daystar Universal Solar Finder

DAY-USF
5 en stock

Safe, no-look solar alignment Projects a harmless dot of light onto a target screen Dual mounting system fits most telescopes Includes both a dove...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95
Daystar White Light Solar Filter - 90mm
$59.00 - $179.00
$59.00 - $179.00
$59.00 - $179.00
$59.00

Daystar White Light Solar Filter

Options available

Film Thousand Oaks Solarlite Certifié ISO 12312-2:2015 pour l'observation solaire directe Densité ND 5 : rejette 99.999% de la lumière solaire Cel...

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$59.00 - $179.00
$59.00 - $179.00
$59.00 - $179.00
$59.00
Explore Scientific Solar Filter/Sun Shade for Galileoscope Refractor Telescope STEM Kit
$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99

Explore Scientific Solar Filter/Sun Shade for Galileoscope Refractor Telescope STEM Kit

ES-DIYSUNFILTER

Designed for the Galileoscope STEM Kit Enables Safe, Direct Observation of the Sun Features Durable, Tear-Resistant Solarlite Film Produces a Cons...

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$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99
iOptron 70mm Adjustable Solar Filter
$49.00 - $49.00
$49.00
$49.00 - $49.00
$49.00

iOptron 70mm Adjustable Solar Filter

IOP-TSF70

70mm Clear Aperture Fits Telescope Tubes with 86mm to 106mm Outside Diameters SolarLite Film with Optical Density 5 Rating Blocks All but 1/1,000t...

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$49.00 - $49.00
$49.00
$49.00 - $49.00
$49.00
$19.00 - $19.00
$19.00
$19.00 - $19.00
$19.00

Lunt Adaptateur 1.25" pour Filtre Bloquant

LSS-ADP2-1.25

Permet l'utilisation d'un filtre bloquant Lunt 2″ dans un porte-oculaire 1.25″ (filtre bloquant non inclus). Aluminium anodisé noir.

$19.00 - $19.00
$19.00
$19.00 - $19.00
$19.00
$695.00 - $695.00
$695.00
$695.00 - $695.00
$695.00

Lunt 40mm Double Stack Solar Filter for LS40THa

LSS-LS40FHa
1 en stock

Double-stack upgrade for Lunt LS40THa telescopes Reduces system bandpass to <0.29Å 40mm clear aperture Front-mounted, tilt-tuned etalon Reveals...

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$695.00 - $695.00
$695.00
$695.00 - $695.00
$695.00
Économisez jusqu'à 17% Économisez %
$907.00
$895.00 - $995.00
$907.00
$749.00 - $995.00
$749.00 - $995.00
$749.00

Lunt Télescope Solaire LS40Tha

Options available

Le Lunt LS40Tha est un télescope solaire dédié à l'hydrogène alpha qui offre une résolution et un contraste exceptionnels pour l'observation et l'...

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$907.00
$895.00 - $995.00
$907.00
$749.00 - $995.00
$749.00 - $995.00
$749.00
Économisez jusqu'à 17% Économisez %
$995.00 - $995.00
$995.00
$995.00 - $995.00
$995.00

Lunt Module Double Stack 50mm - LS50THa

LSS-LS50CP
1 en stock

Le Lunt LS50C est un filtre compact à double empilement pour le télescope LS50THa Il abaisse la bande passante à <0,5 Angströms Se visse faci...

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$995.00 - $995.00
$995.00
$995.00 - $995.00
$995.00
$1,145.00 - $1,145.00
$1,145.00
$1,145.00 - $1,145.00
$1,145.00

Lunt Étalon Filtrant Ha 50mm

LSS-LS50FHaP

Filtre solaire LS50FHa filtre hydrogène-alpha non obstrué monté à l'avant pour une utilisation sur les télescopes Lunt ED ou le double empilemen...

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$1,145.00 - $1,145.00
$1,145.00
$1,145.00 - $1,145.00
$1,145.00
$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00

Lunt Étalon Filtrant Ha60mm

LSS-LS60FHa

Filtre H-Alpha LS60FHa, filtre hydrogène-alpha non obstrué monté à l'avant de 60 mm pour une utilisation sur une large gamme de télescopes ! Con...

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$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00
$30.00 - $35.00
$30.00 - $35.00
$30.00 - $35.00
$30.00

Lunt Mini Jumelles Lumière Blanche SUNoculars 6x30mm

Options available
1 variants in stock

Parfait pour les enfants de 13 ans SUPERVISION ADULTE RECOMMANDÉE ! Vraiment un instrument de poche que vous pouvez utiliser pour visualiser et o...

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$30.00 - $35.00
$30.00 - $35.00
$30.00 - $35.00
$30.00
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

Lunt Adaptateur T2 vers Porte-Oculaire 2"

LSS-LST2-2"
2 en stock

Cet adaptateur de tube d'oculaire T2 à 2″ permet l'utilisation d'oculaires 2″ avec les filtres de blocage Lunt Solar Systems, les modules CaK et...

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$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
$495.00 - $495.00
$495.00
$495.00 - $495.00
$495.00

Lunt Filtre Bloquant B1200

Options available

Ouverture du filtre bloquant de 12mm Élément de sécurité indispensable pour tous les systèmes à étalon H-alpha Lunt Disponible en boîtier à renvoi...

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$495.00 - $495.00
$495.00
$495.00 - $495.00
$495.00
$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00

Lunt Filtre Bloquant B1200 CaK

Options available

Des télescopes et des filtres à calcium K (Ca-K) sont utilisés pour étudier la longueur d'onde de 393,4 nm. Avoir la capacité d'étudier le Calc...

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$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00
$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00

Lunt Filtre Bloquant B1800

Options available

Composant de sécurité indispensable pour tous les étalons H-alpha Lunt Solar Systems Dimensionné pour les instruments à longue focale afin d'évite...

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$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00
$1,695.00 - $1,695.00
$1,695.00
$1,695.00 - $1,695.00
$1,695.00

Lunt Filtre Bloquant B1800 Calcium K

Options available

Des télescopes et des filtres à calcium K (Ca-K) sont utilisés pour étudier la longueur d'onde de 393,4 nm. Avoir la capacité d'étudier le Calc...

Afficher tous les détails
$1,695.00 - $1,695.00
$1,695.00
$1,695.00 - $1,695.00
$1,695.00
$2,495.00 - $2,495.00
$2,495.00
$2,495.00 - $2,495.00
$2,495.00

Lunt Filtre Bloquant B3400

LSS-B3400s2

Un filtre de blocage est un composant requis lors de l'utilisation de tout filtre solaire ou télescope solaire Lunt. Le boîtier contient des fi...

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$2,495.00 - $2,495.00
$2,495.00
$2,495.00 - $2,495.00
$2,495.00
$395.00 - $395.00
$395.00
$395.00 - $395.00
$395.00

Lunt Filtre Bloquant B600

Options available
3 variants in stock

Ouverture du filtre bloquant de 6mm Composant de sécurité obligatoire pour tous les systèmes à étalon H-alpha Lunt Disponible en boîtiers renvoi c...

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$395.00 - $395.00
$395.00
$395.00 - $395.00
$395.00
$895.00 - $895.00
$895.00
$895.00 - $895.00
$895.00

Lunt Filtre Bloquant B600 Calcium K

Options available

Des télescopes et des filtres à calcium K (Ca-K) sont utilisés pour étudier la longueur d'onde de 393,4 nm. Avoir la capacité d'étudier le Calc...

Afficher tous les détails
$895.00 - $895.00
$895.00
$895.00 - $895.00
$895.00
$375.00 - $375.00
$375.00
$375.00 - $375.00
$375.00

Lunt Porte-Oculaire et Plaque de Support - LS100MT

LSS-BP&F/LS100MT

La plaque arrière et le porte-oculaire Crayford standard pour le LS100MT vous permettent de convertir ce télescope solaire dédié en un télescope p...

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$375.00 - $375.00
$375.00
$375.00 - $375.00
$375.00
$369.00 - $369.00
$369.00
$369.00 - $369.00
$369.00

Lunt Porte-Oculaire et Plaque de Support - LS152T

LSS-LS152T/BP&F

La plaque arrière et le porte-oculaire Crayford standard pour le LS152MT vous permettent de convertir ce télescope solaire dédié en un télescope p...

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$369.00 - $369.00
$369.00
$369.00 - $369.00
$369.00

Ways to Observe the Sun Safely

Different wavelengths reveal completely different Suns. White light shows the photosphere and sunspots; hydrogen-alpha shows the chromosphere with prominences and filaments; Calcium-K shows the plage network above it.

  • White-light filters: Full-aperture film or glass filters fitted in front of the objective, showing sunspots, granulation and faculae. They must always be at the front, never at the eyepiece.
  • Hydrogen-alpha telescopes: Dedicated instruments with sub-angstrom etalons that isolate the 656.28 nm line, revealing prominences at the limb and filaments and flares on the disc.
  • Solar filter modules: Etalon and blocking filter assemblies that convert a suitable refractor into a hydrogen-alpha instrument.
  • Calcium-K filters: Narrow filters at 393 nm showing the chromospheric network, best captured with a camera since the wavelength is at the edge of human sensitivity.
  • Herschel wedges: High-contrast white-light observing for refractors, diverting most solar energy out of the optical path rather than reflecting it back.
  • Solar accessories: Finders, blocking filters, tuning aids and mounting hardware designed for daytime work.

Why Choose David Astro for Solar Astronomy

This is the one category where getting the recommendation wrong has consequences beyond a disappointing view.

  • Safety verified, not assumed: We confirm that any filter is full-aperture and front-mounted, and we will not supply eyepiece-end solar filters, which can fail catastrophically under concentrated heat.
  • Aperture limits for etalon modules: Front-mounted etalons have maximum aperture and focal ratio limits, and exceeding them risks both poor performance and thermal damage. We check your telescope against them.
  • Authorized dealer: Genuine solar equipment with full manufacturer warranty — critically important in a category where counterfeit filters exist.
  • Canadian stock: Ships from Canada, with no duties or brokerage fees for Canadian orders.
  • Inspection and service: We can inspect solar filters for pinholes and coating damage, which should be done before every season.

Solar Astronomy in Canada — Frequently Asked Questions

Can I use an eyepiece-mounted solar filter?
No. Filters that screw into an eyepiece sit where the telescope has concentrated the Sun's full energy, and they can crack without warning. Only full-aperture filters mounted at the front of the telescope are safe.
White light or hydrogen-alpha first?
White light is far less expensive and shows sunspots and granulation well. Hydrogen-alpha shows prominences and surface activity that white light cannot, and is the more dramatic view, at several times the cost.
How do I know my filter is still safe?
Hold it up to a bright indoor light and look for pinholes, scratches or delamination in the coating. Any visible defect means it should be replaced, not repaired or taped.
Can I observe the Sun in winter?
Yes, and low winter sun means long atmospheric path and often poor seeing, but activity is visible year round. Cold also keeps etalon tuning more stable than a hot summer afternoon does.

Starting with solar observing?

Tell us your telescope and we will confirm a safe, effective setup. Genuine filters, Canadian stock, expert guidance.