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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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Original price $59.95 USD - Original price $59.95 USD
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Celestron 11-inch Dovetail bar - CGE

444.5 mm (17.5") Overall Length CGE "Wide" Dovetail Standard Engineered for Celestron CGEM and CGX Mounts Provides a Rigid, Low-Flexure Connection...

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Original price $59.95 USD - Original price $59.95 USD
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Original price $80.95 USD - Original price $80.95 USD
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Celestron 14-inch Dovetail bar - CGE

Attaches to 14" Celestron Schmidt-Cassegrain and EdgeHD Optical Tubes CGE-style dovetail for secure mounting on compatible equatorial mounts Provi...

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Original price $80.95 USD - Original price $80.95 USD
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Original price $47.95 USD - Original price $47.95 USD
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Celestron 8-inch Dovetail bar - CGE

Mounts 8-inch Celestron Optical Tube Assemblies CGE (Wide) Dovetail Format Compatible with CGEM, CGEM II, CGX, and CGX-L Mounts Provides a More Ri...

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Original price $47.95 USD - Original price $47.95 USD
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Original price $59.95 USD - Original price $59.95 USD
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Celestron 9.25-inch Dovetail bar - CGE

Attaches 9.25" Schmidt-Cassegrain and EdgeHD OTAs Compatible with CGE and Losmandy D-style mount saddles Pre-drilled for Celestron 9.25" OTA mount...

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Original price $59.95 USD - Original price $59.95 USD
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Original price $84.00 USD - Original price $84.00 USD
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$84.00 USD
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Current price $84.00 USD

Celestron CGE Universal Mounting Plate

Directly fits Celestron CGE, CGE Pro, CGEM, and CGEM-DX mounts Pre-drilled with 1/4”-20, 5/16”-18, and 3/8”-16 threaded holes Accepts standard tel...

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Original price $84.00 USD - Original price $84.00 USD
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Original price $39.95 USD - Original price $39.95 USD
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Celestron Dovetail Accessory Bar for RASA 6"

Adds 14.2" of CG-5/Vixen style dovetail mounting space Designed specifically for the Rowe-Ackermann Schmidt Astrograph (RASA) 6 Lightweight 11.2 o...

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Original price $39.95 USD - Original price $39.95 USD
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Original price $69.95 USD - Original price $69.95 USD
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Celestron Dovetail Accessory Bar, RASA 8

Adds a top-side accessory rail to the Rowe-Ackermann Schmidt Astrograph 8" Accepts accessories designed for CGE or Losmandy-D style dovetail plate...

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Original price $69.95 USD - Original price $69.95 USD
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Original price $79.99 USD - Original price $79.99 USD
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Explore Scientific Camera Dovetail Plate

Adapts cameras to any standard Vixen-style saddle Multiple slotted mounting points for precise balancing Includes a standard camera mounting bolt ...

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Original price $79.99 USD - Original price $79.99 USD
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Original price $59.99 USD - Original price $59.99 USD
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Explore Scientific Medium-Vixen Style Saddle Plate

Vixen-Style Mounting Profile Solid Extruded Aluminum Construction Black Anodized Finish for Durability Medium Length for Versatile Balancing Light...

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Original price $59.99 USD - Original price $59.99 USD
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Original price $121.00 USD - Original price $121.00 USD
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$121.00 USD
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Farpoint D Series Dovetail Plate - Celestron 9.25" SCT

Safely attach telescope optical tubes with Farpoint Dovetail Plate – Celestron 9.25 Inch SCT.Losmandy “D” size 17" dovetail plate, radius blocks, a...

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Original price $121.00 USD - Original price $121.00 USD
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Original price $91.30 USD - Original price $91.30 USD
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$91.30 USD
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Current price $91.30 USD

Farpoint D Series Universal Dovetail Plate - 14"

Safely attach telescope optical tubes and accessories with Farpoint 14 Inch Universal Dovetail Plate. Machined of sturdy aluminum with a black ano...

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Original price $91.30 USD - Original price $91.30 USD
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Current price $91.30 USD
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Original price $80.30 USD - Original price $80.30 USD
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Current price $80.30 USD

Farpoint D Series Universal Dovetail Plate - 7"

Safely attach telescope optical tubes and accessories with Farpoint 7 Inch Universal Dovetail Plate.Machined of sturdy aluminum with a black anodiz...

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Original price $80.30 USD - Original price $80.30 USD
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Original price $96.80 USD - Original price $96.80 USD
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Farpoint V Series Dovetail Plate - Celestron 9.25" SCT

Safely attach telescope optical tubes and accessories with Farpoint Vixen Dovetail Plate – Celestron 9.25 Inch SCTMachined of sturdy aluminum with ...

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Original price $96.80 USD - Original price $96.80 USD
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Original price $19.00 USD - Original price $19.00 USD
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iOptron Arca-Swiss quick release plate for PST

Connects the iOptron PST Micro Tracker (#3680) to Arca-Swiss compatible clamps Quick release mounting and removal of the tracker Description FA...

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Original price $19.00 USD - Original price $19.00 USD
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Original price $39.00 USD - Original price $39.00 USD
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iOptron Dovetail Plate - 115mm universal

115mm Overall Length Universal Vixen-Style Profile Ideal for Guide Scopes and Finders Provides a Secure Mounting Platform Description FAQ Speci...

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Original price $39.00 USD - Original price $39.00 USD
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Current price $39.00 USD
Original price $47.00 USD - Original price $47.00 USD
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iOptron Dovetail Plate - 178mm universal

178mm (7-inch) Length Universal Mounting Design Provides Secure OTA-to-Mount Connection Aids in Balancing Telescope Assemblies Description FAQ ...

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Original price $47.00 USD - Original price $47.00 USD
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Original price $42.00 USD - Original price $42.00 USD
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iOptron Dovetail Plate for iEQ45 dual saddle

126mm Vixen-Style Dovetail Plate Designed for the iOptron iEQ45 Dual Saddle Provides Secure Mounting for Small Telescopes Compact and Lightweight ...

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Original price $42.00 USD - Original price $42.00 USD
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Original price $42.00 USD - Original price $42.00 USD
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iOptron Dovetail Plate for iOptron SkyTracker Mount

Designed for iOptron SkyTracker Mounts Provides a Stable Camera Mounting Platform Improves Balance with Telephoto Lenses Reduces Flexure for Sharp...

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Original price $42.00 USD - Original price $42.00 USD
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Original price $55.00 USD - Original price $55.00 USD
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Lunt V-Series Dovetail Bar - 12"

12" Mounting Length Vixen-Style Dovetail Profile Black Anodized Aluminum Construction Four 1/4-20 Mounting Holes, Two Connecting Screws Included ...

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Original price $55.00 USD - Original price $55.00 USD
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Original price $25.00 USD - Original price $25.00 USD
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Lunt V-Series Dovetail Bar - 4"

4" Compact Length Vixen-Style Mounting Profile Black Anodized Aluminum Construction Pre-Drilled with 1/4-20 Threaded Holes Compatible with Lunt So...

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Original price $25.00 USD - Original price $25.00 USD
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Original price $35.00 USD - Original price $35.00 USD
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Current price $35.00 USD

Lunt V-Series Dovetail Bar - 6"

Vixen-Style Dovetail Profile Black Anodized Aluminum Construction Designed for Lunt Solar Telescopes Pre-drilled for Telescope Mounting Secure Con...

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Original price $35.00 USD - Original price $35.00 USD
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Original price $133.71 USD - Original price $133.71 USD
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$163.71 USD
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Current price $163.71 USD

Orion Optics UK Base Plate - 250mm Length

Length: 250mm Width: 4 inches Thickness: 10mm Provides a stable, non-flexing mounting surface Ideal for custom telescope and astrophotography setu...

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Original price $133.71 USD - Original price $133.71 USD
Original price $133.71 USD
$163.71 USD
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Current price $163.71 USD
Original price $192.90 USD - Original price $192.90 USD
Original price $192.90 USD
$222.90 USD
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Current price $222.90 USD

Orion Optics UK Base Plate - 400mm Length

400mm Total Length Provides a Solid Connection Between OTA and Mount Engineered to Minimize Mechanical Flexure Designed for Orion Optics UK Telesc...

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Original price $192.90 USD - Original price $192.90 USD
Original price $192.90 USD
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Original price $155.91 USD - Original price $155.91 USD
Original price $155.91 USD
$185.91 USD
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Current price $185.91 USD

Orion Optics UK Base Plate 300mm length

Engineered by Orion Optics UK Provides a Rigid, Flex-Free Mounting Platform Connects Telescope Tube Rings to Mount Saddles Solid Metal Constructio...

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Original price $155.91 USD - Original price $155.91 USD
Original price $155.91 USD
$185.91 USD
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Current price $185.91 USD

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 helps 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.

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.