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Roues à filtres

A filter wheel is what makes monochrome imaging practical. Without one, every channel change means touching the telescope, breaking focus and losing framing; with one, the sequence runs unattended all night while you sleep. David Astro carries filter wheels in Canada in manual and motorized designs across the common filter sizes, held in our Canadian warehouse.

Wheel choice is constrained by your filter size, your camera and the back-focus you have available. Send us all three and we will specify the combination.

Filtres

Askar Multifunctional Filter Drawer
$164.00 - $164.00
$164.00
$164.00 - $164.00
$164.00

Askar Multifunctional Filter Drawer

ASK-ASKAR54FD
2 en stock

Integrates telescope and camera adapters to reduce complexity Accepts five common filter formats in a single system Supports 1.25" and 2" mounted ...

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$164.00 - $164.00
$164.00
$164.00 - $164.00
$164.00
$58.00 - $58.00
$58.00
$58.00 - $58.00
$58.00

Baader Double Support à Filtres T - 1.25"

BAA-1508030

Porte-filtre avec filetage T-2 et filetage intérieur M28,5. Un filetage externe continu T-2 avec un filetage de filtre interne de 1¼". Utilisé...

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$58.00 - $58.00
$58.00
$58.00 - $58.00
$58.00
$39.00 - $39.00
$39.00
$39.00 - $39.00
$39.00

Baader Support à Filtre 2" pour DSLR - M48/SP54

BAA-2408166

Permet le montage de filtres Baader 2" Nécessite les anneaux DT Hyperion #2958028 - 2458062 et des anneaux Stepper supplémentaires M67 à M82 T...

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$39.00 - $39.00
$39.00
$39.00 - $39.00
$39.00
Baader Planetarium 1.25" Filter Holder for T-2 and 2" Filter Threads
$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00

Baader Planetarium 1.25" Filter Holder for T-2 and 2" Filter Threads

BAA-1508031

Securely holds standard 1.25" filters Integrates directly into T-2 (M42x0.75) threaded systems Prevents accessory tilt common with drop-in filter ...

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$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00
Baader Planetarium Baader FCCT 1 Filter Holder for RASA 8" & 77mm QHY Cameras
$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00

Baader Planetarium FCCT 1 Filter Holder for RASA 8" & 77mm QHY Cameras

BAA-2459070

Designed for the Celestron RASA 8" Astrograph Enables filter use in a fast f/2 optical system Maintains the RASA's critical back focus distance Co...

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$350.00 - $350.00
$350.00
$350.00 - $350.00
$350.00
Baader Planetarium FCCT Filter Holder Set: 4x 2" (Ø 47.4 mm) – 3D-printed
$156.00 - $165.00
$156.00 - $165.00
$156.00 - $165.00
$156.00

Baader Planetarium FCCT Filter Holder Set: 4x – 3D-printed

Options available

Set of 4 individual filter holders Designed for the Baader FCCT system Available for unmounted 31mm, 36mm (2mm thick) or 2-inch (Ø 47.4 mm) filter...

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$156.00 - $165.00
$156.00 - $165.00
$156.00 - $165.00
$156.00
Baader Planetarium FCCT Filter Holder 2" (Ø 47.4mm) – 3D-printed
$46.00 - $49.00
$46.00 - $49.00
$46.00 - $49.00
$46.00

Baader Planetarium FCCT Filter Holder – 3D-printed

Options available

Designed for the Baader FCCT System Available for unmounted 31mm, 36mm and 2" (Ø 47.4mm) filters Integrated Neodymium magnets for secure, repeatab...

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$46.00 - $49.00
$46.00 - $49.00
$46.00 - $49.00
$46.00
Baader Planetarium Filter Crown Tool for 1.25" Baader filters
$40.00 - $40.00
$40.00
$40.00 - $40.00
$40.00

Baader Planetarium Filter Crown Tool for Baader Filters

Options available

Safely Removes Stuck Baader Filters – Versions for 1.25" & 2" Filters Engages with Baader's Proprietary "Filter Crown" Notch Prevents Deformat...

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$40.00 - $40.00
$40.00
$40.00 - $40.00
$40.00
Baader Planetarium UFC Protection – Dark-Slider, 3D-printed
$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00

Baader Planetarium UFC Protection – Dark-Slider, 3D-printed

BAA-2459197

STL files for 3D printing Designed for the Baader UFC System Creates a light-tight dark slide Essential for dark frame calibration Free download w...

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$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00
Baader Planetarium UFC Protection – Slider-Seal, 3D-printed
$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00

Baader Planetarium UFC Protection – Slider-Seal, 3D-printed

BAA-2459196

Free to download STL files for 3D printing Designed for the Baader Planetarium UFC System Protects filter sliders from dust and damage Licensed un...

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$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00
Baader Planetarium UFC S70 Base Connector – Optical height: 2 mm
$46.00 - $46.00
$46.00
$46.00 - $46.00
$46.00

Baader Planetarium UFC S70 Base Connector – Optical height: 2 mm

BAA-2459124

Connects multiple Baader UFC filter bases Adds only 2 mm of optical height to the imaging train Provides a camera-side S70 dovetail co...

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$46.00 - $46.00
$46.00
$46.00 - $46.00
$46.00
$11.50 - $11.50
$11.50
$11.50 - $11.50
$11.50

Baader Boîte de Filtre Empilable

BAA-2459253
2 en stock

Baader-Filterbox pour filtres jusqu'à 65 x 65 mm Pour mettre à niveau vos filtres existants : depuis env. 2010 inclus dans la livraison de tous...

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$11.50 - $11.50
$11.50
$11.50 - $11.50
$11.50
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00

Baader Tiroir à Filtre UFC AUX - Filtre D 31mm (requiert UFC-RD50)

BAA-2459151

Baader UFC 31 mm AUX-Filtre-Holder Accepte les filtres ronds non montés de 31 mm Nécessite 1 curseur UFC-RD50 (2459113) Se monte dans le curse...

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$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00

Baader Tiroir à Filtre UFC AUX - Filtre D 36mm (requiert UFC-RD50)

BAA-2459152
1 en stock

Baader UFC 36 mm AUX-Filtre-Holder Accepte les filtres ronds non montés de 36 mm Nécessite 1 curseur UFC-RD50 (2459113) Se monte dans le curse...

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$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00

Baader Tiroir à Filtre UFC AUX - 1.25" (Nécessite UFC-RD50)

BAA-2459153
1 en stock

Baader UFC 1¼" AUX-Filter-Holder Accepte les filtres 1¼" montés Nécessite 1 curseur UFC-RD50 (#2459113) Se monte dans le curseur UFC-RD50, qui...

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$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
$62.00 - $62.00
$62.00
$62.00 - $62.00
$62.00

Baader Tiroir à Filtre UFC - Filtre Carré 50mm

BAA-2459114

Baader UFC Curseur de filtre / Récipient de filtre 50x50 Accepte les filtres carrés 50x50 mm non montés (jusqu'à 4 mm d'épaisseur) Se glisse da...

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$62.00 - $62.00
$62.00
$62.00 - $62.00
$62.00
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

Baader Tiroir à Filtre UFC - Filtre 2" Monté

BAA-2459112

Baader UFC 2" Curseur de filtre / Conteneur de filtre M48 convient aux filtres 2" (M48) montés sur cellule se glisse dans la base du filtre UFC...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

Baader Tiroir à Filtre UFC - Filtre Rond Non Monté 50mm

BAA-2459113

Glissière de filtre Baader UFC D50.4 Accepte les filtres ronds non montés de 50,4 mm (pour Filtre-Ø 50,0 mm jusqu'à 50,5 mm) Se glisse dans la ...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00

Baader Adaptateur UFC Anti Lumière Parasite

BAA-2459121

Baader UFC Straylight-Flange côté télescopique avec plaque de montage pour UFC-Base (vis incluses) côté caméra avec bride de lumière parasite, ...

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$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00
$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00

Baader Base du Changeur de Filtre Universel (UFC)

BAA-2459110
1 en stock

Base Baader UFC (chambre de filtre) pour curseurs de filtre 2" / 50,4 / 50x50 Côté télescope : avec pince réceptrice à queue d'aronde S70 Côté...

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$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00
Daystar Solar System Filter Wheel - Housing Only (existing optics moved)
$8,538.00 - $51,672.50
$8,538.00 - $51,672.50
$8,538.00 - $51,672.50
$8,538.00

Daystar Solar System Filter Wheel

Options available

Houses up to four independent, electronically tuned solar filters Switches between filters in less than three seconds Choose a loaded configuratio...

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$8,538.00 - $51,672.50
$8,538.00 - $51,672.50
$8,538.00 - $51,672.50
$8,538.00
iOptron iEFW-15 5-Position Electronic Filter Wheel for 1.25'' or 31mm Filters
$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

iOptron iEFW-15 5-Position Electronic Filter Wheel for 1.25'' or 31mm Filters

IOP-3381

Automates filter changes for astrophotography 5-position carousel Accepts both 1.25" mounted filters Accepts 31mm unmounted filters Enables unatte...

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$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00
iOptron iEFW-18, 8-Filter Electronic Filter Wheel for 1.25'' or 31mm Filters
$289.00 - $289.00
$289.00
$289.00 - $289.00
$289.00

iOptron iEFW-18, 8-Filter Electronic Filter Wheel for 1.25'' or 31mm Filters

IOP-3382

Holds up to 8 filters Compatible with 1.25" mounted filters Compatible with 31mm unmounted filters Electronic control for automated imaging Des...

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$289.00 - $289.00
$289.00
$289.00 - $289.00
$289.00
$459.00 - $459.00
$459.00
$459.00 - $459.00
$459.00

Pegasus Astro Indigo Filter Wheel - 7 x 2"

PEG-INDIGOFW7-2

Holds seven 2-inch mounted or 50mm unmounted filters Ultra-thin 19.0mm CNC-milled aluminum body Stepper motor with optical encoders for precise po...

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$459.00 - $459.00
$459.00
$459.00 - $459.00
$459.00

Choosing a Filter Wheel

Three specifications determine whether a wheel works in your system: filter size and count, optical thickness, and how it integrates with your camera and guider.

  • Filter size and position count: More positions means fewer swaps, but a larger wheel diameter and often greater thickness. Five to seven positions covers LRGB plus narrowband for most imagers.
  • Optical thickness: The wheel consumes back-focus, and this must be included in your corrector spacing calculation. Slim designs exist specifically to conserve it.
  • Mounted versus unmounted filters: Wheels are built for one or the other. Unmounted square filters maximize clear aperture for large sensors but need a compatible carrier.
  • Motorized versus manual: Motorized wheels are essential for unattended sequences. Manual wheels are cheaper and adequate if you are present and refocusing anyway.
  • Off-axis guider integration: Many wheels accept an integrated off-axis guider, keeping the train short and the guide star picked off ahead of the filters.
  • Vignetting geometry: Filter size must suit sensor diagonal and the distance from filter to sensor. Too small and the corners darken regardless of the optics.

Why Choose David Astro for Filter Wheels

A filter wheel is a back-focus decision as much as a convenience one.

  • Thickness included in the calculation: We provide a complete spacing list with the wheel accounted for, so your corrector still lands on its design distance.
  • Filter size verified against your sensor: We calculate the size needed to avoid vignetting rather than assuming the nominal match is adequate.
  • Off-axis guider planned together: If you will need one at your focal length, we specify it with the wheel so the geometry works out the first time.
  • Authorized dealer: Genuine wheels with manufacturer warranty, in Canadian stock.
  • Ships from Canada: No duties or brokerage fees for Canadian orders.

Filter Wheels in Canada — Frequently Asked Questions

How many filter positions do I need?
Five covers LRGB plus one narrowband. Seven covers LRGB plus Ha, OIII and SII, which is the complete common set and avoids ever swapping filters by hand.
What filter size should I use?
It depends on sensor diagonal and how far the filter sits from the sensor. 36 mm typically suits APS-C in a standard wheel; full frame usually needs 50 mm square or unmounted 2 inch.
Does the wheel affect my back-focus?
Yes, significantly — often 20 mm or more of the typical 55 mm budget. It must be included in the calculation along with the camera and any off-axis guider.
Manual or motorized?
Motorized if you run unattended sequences, which is most of the point of monochrome imaging. Manual is a reasonable economy only if you are at the telescope throughout the session.

Building a mono imaging train?

Send us your camera, filters and corrector and we will specify the wheel and spacing. Full warranty, shipped from Canada.