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Dovetail Plates

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.

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

Askar D-Series Universal Dovetail Plate - 200mm

ASK-ASLDP200R
3 in stock

Losmandy D-Series Profile Universal Hole and Slot Mounting Pattern Flexible Accessory Integration Solid, Flex-Free Connection Description FAQ S...

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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

Askar D-Series Universal Dovetail Plate - 300mm

ASK-ASLDP300R
2 in stock

300mm Overall Length Universal D-Series (Losmandy-style) Profile Slotted and Tapped Mounting Holes Designed for Tube Rings and Guide Scopes Provid...

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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

Askar D-Series Universal Dovetail Plate - 400mm

ASK-ASLDP400R
1 in stock

400mm Length D-Series (Losmandy-style) Profile Universal Hole and Slot Pattern Connects Tube Rings and Accessories Solid, Flex-Free Mounting Platf...

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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

Askar V-Series Universal Dovetail Plate - 150mm

ASK-ASVDP150R
1 in stock

150mm Length V-Series (Vixen-Style) Profile Universal Mounting Slots and Holes Connects Tube Rings, Guide Scopes, or Cameras Description FAQ Sp...

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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

Askar V-Series Universal Dovetail Plate - 200mm

ASK-ASVDP200R
3 in stock

200mm Length V-Series (Vixen-style) Profile Universal Hole and Slot Pattern Mounts Tube Rings, Guide Rings, and Cameras Tripod Compatible Descr...

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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

Askar V-Series Universal Dovetail Plate - 300mm

ASK-ASVDP300R
1 in stock

300mm Vixen-Style Dovetail Plate Universal Mounting Slots and Holes Ideal for Telescope Tube Rings and Guide Scopes Lightweight and Rigid Construc...

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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 D-Series Double Dovetail Mounting Plate - 300mm

BAA-1500330

300mm Mounting Plate Length Dual-Sided 3-Inch D-Style Dovetail Predrilled for 10Micron and Astro-Physics Mounts Compatible with Baader Guidescope ...

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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 Heavy-Duty 8" Planewave Double Mounting Plate - for up to 100kg

BAA-2451559

Designed for parallel mounting of two large telescopes Enables precise balancing of off-center loads Pre-drilled for versatile clamp and accessory...

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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 V Series Dovetail Bar Mark III - 470mm fits C8/C9.25/C11

BAA-2451101

470mm total length provides extensive balancing range Vixen-style (V-Series) profile fits Celestron, Sky-Watcher, and Vixen GP mounts Pre-drilled ...

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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 V-Series Dovetail - 120mm

BAA-2451650

V-Style Dovetail Bar Compatible with Vixen, Celestron, and SkyWatcher Mounts Provides a Secure, Rigid Connection for Optical Tubes Precision-Engin...

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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 V-Series Dovetail - 180mm

BAA-2451660

M 36.4 is standard of Vixen telescopes Telescope side external thread 36.4mm Focuser side T-2 external thread (direct T-2 photo thread for Vixen, ...

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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 V-Series Dovetail Bar - 345mm for C8 SCT/HD

BAA-2451734
1 in stock

345mm Length V-Series (Vixen-Style) Profile Pre-Drilled for Celestron 8" SCT/HD Celestron-Orange Anodized Finish Description FAQ Specifications...

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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 V-Series Dovetail Bar - 455mm for C9.25/C22 SCT/HD

BAA-2451745

455mm Vixen-Style Dovetail Bar Pre-Drilled for Celestron 9.25" & 11" SCT/HD Telescopes Improves Balance with Heavy Accessories Durable Orange ...

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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.