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Plaques à queue d'aronde

A dovetail plate is the single mechanical link between your telescope and everything holding it up, and its stiffness sets the floor for how well your system can guide. David Astro stocks dovetail plates in Canada in both Vixen and Losmandy standards, in lengths from short accessory bars to full-length observatory plates, shipping from Canadian stock.

Choosing correctly is mostly about matching the standard to your mount's saddle and the length to your balance range. Tell us your mount and tube and we will specify the bar.

Filtres

CA$101.00 - CA$101.00
CA$101.00
CA$101.00 - CA$101.00
CA$101.00

Plaque à queue d'aronde universelle Askar série D - 200 mm

ASK-ASLDP200R
3 en stock

Plaque à queue d'aronde universelle compatible avec divers supports de télescope Longueur de 200 mm pour des options de montage d'équipe...

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CA$101.00 - CA$101.00
CA$101.00
CA$101.00 - CA$101.00
CA$101.00
CA$134.00 - CA$134.00
CA$134.00
CA$134.00 - CA$134.00
CA$134.00

Plaque à queue d'aronde universelle Askar série D - 300 mm

ASK-ASLDP300R
2 en stock

Plaque universelle en queue d'aronde de 300 mm de long Compatible avec les systèmes de montage de style Losmandy Description ...

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CA$134.00 - CA$134.00
CA$134.00
CA$134.00 - CA$134.00
CA$134.00
CA$178.00 - CA$178.00
CA$178.00
CA$178.00 - CA$178.00
CA$178.00

Plaque à queue d'aronde universelle Askar série D - 400 mm

ASK-ASLDP400R
1 en stock

Fabriqué en aluminium léger Compatible avec une large gamme d'anneaux de tubes de télescope Description La plaque univ...

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CA$178.00 - CA$178.00
CA$178.00
CA$178.00 - CA$178.00
CA$178.00
CA$57.00 - CA$57.00
CA$57.00
CA$57.00 - CA$57.00
CA$57.00

Plaque à queue d'aronde universelle Askar série V - 150 mm

ASK-ASVDP150R
1 en stock

S'adapte à la plupart des supports et accessoires de télescope longueur 300 mm Excellente stabilité et soutien Description ...

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CA$57.00 - CA$57.00
CA$57.00
CA$57.00 - CA$57.00
CA$57.00
CA$66.00 - CA$66.00
CA$66.00
CA$66.00 - CA$66.00
CA$66.00

Plaque à queue d'aronde universelle Askar série V - 200 mm

ASK-ASVDP200R
3 en stock

S'adapte à la plupart des supports et accessoires de télescope 200mm de longueur Excellente stabilité et soutien Description ...

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CA$66.00 - CA$66.00
CA$66.00
CA$66.00 - CA$66.00
CA$66.00
CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00

Plaque à queue d'aronde universelle Askar série V - 300 mm

ASK-ASVDP300R
1 en stock

S'adapte à la plupart des supports et accessoires de télescope longueur 300 mm Excellente stabilité et soutien Description ...

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CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00
CA$178.00 - CA$178.00
CA$178.00
CA$178.00 - CA$178.00
CA$178.00

Baader Série D- Barre à queue d'aronde Double - 300mm

BAA-1500330

10/17 - Version révisée : avec beaucoup plus d'options de montage que la plaque précédente, qui ne pouvait contenir que nos anneaux de guidage ...

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CA$178.00 - CA$178.00
CA$178.00
CA$178.00 - CA$178.00
CA$178.00
CA$1,063.00 - CA$1,063.00
CA$1,063.00
CA$1,063.00 - CA$1,063.00
CA$1,063.00

Baader Barre à queue d'aronde Double Heavy-Duty 8" po" pour PlaneWave - jusqu'à 100 kg

BAA-2451559

Adaptateur avec filetage mâle M43 x 0,75 vers filetage mâle T-2 (M42 x 0,75), par exemple pour les instruments Takahashi Cette bague de conne...

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CA$1,063.00 - CA$1,063.00
CA$1,063.00
CA$1,063.00 - CA$1,063.00
CA$1,063.00
Baader Planetarium Baader 3" Losmandy Dovetail Bar - 250mm (10")
CA$114.00 - CA$114.00
CA$114.00
CA$114.00 - CA$114.00
CA$114.00

Baader Planetarium 3" Losmandy Dovetail Bar - 250mm (10")

BAA-1501605

3" Losmandy D-Style Profile 250mm (10") Length Ideal for Custom Telescope Builds Black Anodized Finish Description FAQ Specifications In the Bo...

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CA$114.00 - CA$114.00
CA$114.00
CA$114.00 - CA$114.00
CA$114.00
Baader Planetarium Dovetail Bar 3", 190mm (7.5") – for Baader & TEC (flat)
CA$139.00 - CA$139.00
CA$139.00
CA$139.00 - CA$139.00
CA$139.00

Baader Planetarium Dovetail Bar 3", 190mm (7.5") – for Baader & TEC (flat)

BAA-1501655

3" Losmandy D-Style Dovetail Bar 190mm (7.5") Length Flat Top Profile for Flat-Surface Mounting Compatible with Baader 3" Clamps and TEC Telescope...

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CA$139.00 - CA$139.00
CA$139.00
CA$139.00 - CA$139.00
CA$139.00
Baader Planetarium Dovetail Bar 3", 230mm (9") – for Baader & TEC (flat)
CA$148.00 - CA$148.00
CA$148.00
CA$148.00 - CA$148.00
CA$148.00

Baader Planetarium Dovetail Bar 3", 230mm (9") – for Baader & TEC (flat)

BAA-1501660

3-inch Losmandy D-style dovetail profile 230mm (9") overall length Flat top surface for direct mounting Compatible with Baader 3" clamps Ideal for...

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CA$148.00 - CA$148.00
CA$148.00
CA$148.00 - CA$148.00
CA$148.00
Baader Planetarium Dovetail Bar 3", 350mm (14") – for Custom builds
CA$129.00 - CA$129.00
CA$129.00
CA$129.00 - CA$129.00
CA$129.00

Baader Planetarium Dovetail Bar 3", 350mm (14") – for Custom builds

BAA-1501610

3-inch Losmandy D-Style Dovetail Bar 350mm (14") Overall Length Ideal for Custom Telescope Mounting Solutions Durable Black Anodized Finish Des...

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CA$129.00 - CA$129.00
CA$129.00
CA$129.00 - CA$129.00
CA$129.00
Baader Planetarium Dovetail Bar 3", 470mm (18.5") – for Celestron / Custom builds
CA$158.00 - CA$158.00
CA$158.00
CA$158.00 - CA$158.00
CA$158.00

Baader Planetarium Dovetail Bar 3", 470mm (18.5") – for Celestron / Custom builds

BAA-1501615

3-inch Losmandy-style dovetail profile 470mm (18.5") overall length for optimal balance Provides a rigid mounting platform for large telescopes Du...

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CA$158.00 - CA$158.00
CA$158.00
CA$158.00 - CA$158.00
CA$158.00
Baader Planetarium Dovetail Bar 3", 530mm (20.5") – for Celestron / Custom builds
CA$188.00 - CA$188.00
CA$188.00
CA$188.00 - CA$188.00
CA$188.00

Baader Planetarium Dovetail Bar 3", 530mm (20.5") – for Celestron / Custom builds

BAA-1501620

530mm (20.5") Length 3" Losmandy D-Style Standard Ideal for Celestron SCTs and Custom Builds Black Anodized Finish Description FAQ Specificatio...

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CA$188.00 - CA$188.00
CA$188.00
CA$188.00 - CA$188.00
CA$188.00
Baader Planetarium Dovetail Bar 3", 610mm (24") – for Celestron / Custom builds
CA$222.00 - CA$222.00
CA$222.00
CA$222.00 - CA$222.00
CA$222.00

Baader Planetarium Dovetail Bar 3", 610mm (24") – for Celestron / Custom builds

BAA-1501625

3" Losmandy-Style Dovetail 610mm (24") Total Length Black Anodized Finish Ideal for Celestron OTAs and Custom Builds Description FAQ Specificat...

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CA$222.00 - CA$222.00
CA$222.00
CA$222.00 - CA$222.00
CA$222.00
Baader Planetarium Dovetail Bar V, 200mm (7.9") – for Vixen, Celestron and Skywatcher Mounts
CA$72.00 - CA$72.00
CA$72.00
CA$72.00 - CA$72.00
CA$72.00

Baader Planetarium Dovetail Bar V, 200mm (7.9") – for Vixen, Celestron and Skywatcher Mounts

BAA-2451661

200mm (7.9") Length Vixen-Style V-Profile 44mm Base Width Compatible with Vixen, Celestron, and Sky-Watcher Mounts Description FAQ Specificatio...

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CA$72.00 - CA$72.00
CA$72.00
CA$72.00 - CA$72.00
CA$72.00
Baader Planetarium Dovetail Bar V, 495mm (19,5") – for Celestron RASA 8"
CA$113.00 - CA$113.00
CA$113.00
CA$113.00 - CA$113.00
CA$113.00

Baader Planetarium Dovetail Bar V, 495mm (19,5") – for Celestron RASA 8"

BAA-2451735

495mm (19.5") Vixen-style dovetail bar Designed for the Celestron RASA 8" astrograph Provides extended length for balancing imaging equipment Comp...

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CA$113.00 - CA$113.00
CA$113.00
CA$113.00 - CA$113.00
CA$113.00
Baader Planetarium Dovetail Bar Z, 120mm (4.7") – for Zeiss/Astro-Physics
CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00

Baader Planetarium Dovetail Bar Z, 120mm (4.7") – for Zeiss/Astro-Physics

BAA-2451103

120mm (4.7") Length Zeiss / Astro-Physics Mount Compatible "Z" Profile Dovetail Bar Provides Secure, Precision Fit Description FAQ Specificatio...

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CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00
Baader Planetarium Dovetail Bar Z, 200mm (7.9") – for Zeiss/Astro-Physics
CA$66.00 - CA$66.00
CA$66.00
CA$66.00 - CA$66.00
CA$66.00

Baader Planetarium Dovetail Bar Z, 200mm (7.9") – for Zeiss/Astro-Physics

BAA-2451104

200mm (7.9") Length Zeiss / Astro-Physics "Z" Dovetail Profile Dedicated Fit for Non-Vixen/Losmandy Mounts Provides Secure OTA-to-Mount Connection...

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CA$66.00 - CA$66.00
CA$66.00
CA$66.00 - CA$66.00
CA$66.00
CA$121.00 - CA$121.00
CA$121.00
CA$121.00 - CA$121.00
CA$121.00

Baader Série V - Barre à queue d'aronde Mark III - 470mm pour C8/C9.25/C11

BAA-2451101

Convient aux OTA C8 / 9/11 "(largeur de base 44 mm) sur les supports Vixen-GP-ou Synta-EQ5 / HEQ5 / 6 ou Celestron AVX / AS-GT Longueur = 470 mm...

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CA$121.00 - CA$121.00
CA$121.00
CA$121.00 - CA$121.00
CA$121.00
CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00

Baader Série V - Barre à queue d'aronde - 120mm

BAA-2451650

V (EQ) avec rainures fraisées au centre Longueur : 120 mm Largeur socle 44mm Compatible avec Vixen, Celestron, Skywatcher et autres supports ...

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CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00
CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00

Baader Série V - Barre à queue d'aronde - 180mm

BAA-2451660

M 36.4 est la norme des télescopes Vixen Filetage extérieur côté télescope 36,4 mm Filetage externe T-2 côté porte-oculaire (filetage photo dir...

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CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00
CA$107.00 - CA$107.00
CA$107.00
CA$107.00 - CA$107.00
CA$107.00

Baader Série V - Barre à queue d'aronde - 345mm pour C8 SCT/HD

BAA-2451734

Rail en queue d'aronde en V avec rayon et avec trous pour 8 "SC / HD Longueur : 345 mm Percé et comprend des vis de montage pour Celestron 8" ...

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CA$107.00 - CA$107.00
CA$107.00
CA$107.00 - CA$107.00
CA$107.00
CA$124.00 - CA$124.00
CA$124.00
CA$124.00 - CA$124.00
CA$124.00

Baader Série V - Barre à queue d'aronde - 455mm pour C9.25/C22 SCT/HD

BAA-2451745

Rail à queue d'aronde en V avec rayon et trous pour 9" SC/HD et 11" SC/HD Longueur : 455 mm Percé et comprend des vis de montage pour Celestron...

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CA$124.00 - CA$124.00
CA$124.00
CA$124.00 - CA$124.00
CA$124.00

Dovetail Standards, Length and Stiffness

Two standards dominate, and the difference between them is not just width — it is torsional stiffness, which is what actually stops a heavy tube from twisting under a guiding correction.

  • Vixen-style, approximately 44 mm: Light, near-universal on entry and mid-level mounts, and appropriate for visual loads and small imaging refractors up to a few kilograms.
  • Losmandy-style, approximately 75 mm: Substantially stiffer in torsion, the correct choice for heavy tubes and for imaging where differential flexure would otherwise show in your stars.
  • Length and balance range: A longer bar gives more fore-and-aft adjustment, which matters when adding a heavy camera train shifts the balance point well behind the rings.
  • Slotted versus drilled: Slotted bars allow continuous ring positioning; drilled bars fit specific hole patterns and are usually stiffer for the same mass.
  • Accessory rails: Short bars mounted on top of rings for guide scopes, cameras and finders, keeping accessories on the optical axis rather than cantilevered.
  • Dual-standard plates: Bars machined to fit both saddle types, useful when moving one telescope between mounts.

Why Choose David Astro for Dovetail Plates

Flexure is diagnosed rather than guessed at. We help you find it before you buy a replacement for the wrong component.

  • Saddle compatibility confirmed: We verify what your mount's saddle actually accepts, including dual-fit saddles that grip a narrow bar on its edges rather than its faces.
  • Length sized to your balance: We account for the rearward shift a filter wheel and camera introduce, so you are not left with the rings at the very end of the bar.
  • Machined quality: We stock bars whose dovetail angles are cut accurately enough to seat fully in a saddle, which cheap extruded bars often do not.
  • Authorized dealer: Genuine hardware with manufacturer warranty, stocked domestically and ready to ship.
  • Domestic shipping: Ships from Canada with no duties or brokerage charges for Canadian buyers.

Dovetail Plates in Canada — Frequently Asked Questions

How long a dovetail should I buy?
Long enough that your rings sit near the middle of the bar with the camera attached. If the rings end up at the very front to achieve balance, the bar is too short and you have lost adjustment range.
Is a Losmandy bar overkill for a small refractor?
Often yes, and the extra mass counts against your payload. Below about 7 kg total, a well-machined Vixen bar is usually adequate unless your mount's saddle is Losmandy only.
Can a dovetail cause guiding problems?
Yes. An undersized or poorly seated bar twists under correction, producing errors that look like tracking faults. If guiding degrades at particular tube angles, check the dovetail seating first.
Do you stock bars for specific telescopes?
We carry model-specific bars for many common tubes as well as universal slotted plates. Tell us the telescope and we will confirm the hole pattern.

Sizing a dovetail?

Send us your mount, tube and camera weight and we will specify the bar. Canadian stock, fast domestic shipping.