Skip to content

Mounting Hardware

Flexure is invisible until you see it in your stars. A dovetail that shifts a fraction of a millimetre under load, a guide scope on a soft bracket, a saddle clamping on one point instead of a face — each produces elongation that no processing corrects. David Astro carries mounting hardware items in Canada: dovetail bars and clamps, tube rings, saddles, side-by-side plates and adapter plates, in Canadian stock.

Getting this right is mostly a matter of matching standards and eliminating single points of contact. Tell us your tube diameter, mount saddle and payload and we will specify hardware that holds it rigidly.

Filters

CA$48.00 - CA$48.00
CA$48.00
CA$48.00 - CA$48.00
CA$48.00

PrimaLuceLab Vixen Plate 90mm PLUS

PLL-PLLVIX90P
1 in stock

90mm Vixen-style dovetail plate Dual-profile for Vixen and Arca-Swiss style clamps Part of the PrimaLuceLab PLUS modular system CNC machined from ...

View full details
CA$48.00 - CA$48.00
CA$48.00
CA$48.00 - CA$48.00
CA$48.00
CA$267.00 - CA$267.00
CA$267.00
CA$267.00 - CA$267.00
CA$267.00

SBIG Tripod mount for STT, STX and STXL Cameras

DL-TRIPOD-MOUNT

Tripod mount for STT, STX and STXL Series Cameras. Attaches to the back of the camera body in place of one rack handle. Provides a strong mounting ...

View full details
CA$267.00 - CA$267.00
CA$267.00
CA$267.00 - CA$267.00
CA$267.00
CA$80.00 - CA$80.00
CA$80.00
CA$80.00 - CA$80.00
CA$80.00

Sky-Watcher D-Series 180mm (7") Universal Dovetail

SW-S31000
1 in stock

180mm (7-inch) Losmandy-style D-plate Universal mounting with numerous pre-drilled holes Signature Sky-Watcher green anodized finish Light...

View full details
CA$80.00 - CA$80.00
CA$80.00
CA$80.00 - CA$80.00
CA$80.00
CA$140.00 - CA$140.00
CA$140.00
CA$140.00 - CA$140.00
CA$140.00

Sky-Watcher D-Series 355mm (14") Universal Dovetail

SW-S31010

355mm (14 inch) Sky-Watcher green anodized Losmandy-style dovetail plate

CA$140.00 - CA$140.00
CA$140.00
CA$140.00 - CA$140.00
CA$140.00
Sold out
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00

Software Bisque C11 OTA Mounting Rings

SB10327

Precision-machined OTA mounting rings.The Software Bisque 11-inch (27 cm) OTA mounting rings precisely fit the Celestron C11 and RASA 11-inch optic...

View full details
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00
Sold out
Sold out
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00

Software Bisque C14 OTA Mounting Rings

SB10324

Precision-machined OTA mounting rings.These 14-inch (36 cm) OTA mounting rings precisely fit the Celestron C14 and RASA 14-inch optical tube assemb...

View full details
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00
Sold out
Sold out
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00

Software Bisque MEADE 14" OTA Mounting Rings

SB10333

Precision-machined OTA mounting rings.These 14-inch (36 cm) OTA mounting rings precisely fit Meade 14-inch optical tube assemblies and have threade...

View full details
CA$2,373.00 - CA$2,373.00
CA$2,373.00
CA$2,373.00 - CA$2,373.00
CA$2,373.00
Sold out
Sold out
CA$2,583.00 - CA$2,583.00
CA$2,583.00
CA$2,583.00 - CA$2,583.00
CA$2,583.00

Software Bisque MEADE 16" OTA Mounting Rings

SB10323

Precision-machined OTA mounting rings.These 16 inch (40 cm) OTA mounting rings precisely fit the Meade 16 inch telescope and have hole patterns to ...

View full details
CA$2,583.00 - CA$2,583.00
CA$2,583.00
CA$2,583.00 - CA$2,583.00
CA$2,583.00
Sold out
Sold out
CA$770.00 - CA$770.00
CA$770.00
CA$770.00 - CA$770.00
CA$770.00

Software Bisque Mounting Ring Dovetail Accessory Plate

SB10328

The Paramount Mounting Ring Dovetail Accessory Plate can be attached to any of the Software Bisque OTA Mounting rings (Celestron 11-inch, Celestron...

View full details
CA$770.00 - CA$770.00
CA$770.00
CA$770.00 - CA$770.00
CA$770.00
Sold out
Sold out
CA$1,288.00 - CA$1,288.00
CA$1,288.00
CA$1,288.00 - CA$1,288.00
CA$1,288.00

Software Bisque Paramount ME II Large Dovetail

SB10258

Paramount ME II AccessoryThe Paramount ME II Large Dovetail is an optional accessory that enables the Paramount ME II’s Versa-Plate to accept optic...

View full details
CA$1,288.00 - CA$1,288.00
CA$1,288.00
CA$1,288.00 - CA$1,288.00
CA$1,288.00
Sold out
Sold out
CA$3,220.00 - CA$3,220.00
CA$3,220.00
CA$3,220.00 - CA$3,220.00
CA$3,220.00

Software Bisque Paramount ME II Side by Side Ring Plate Large Dovetail

SB10334

Software Bisque Paramount ME II Side by Side Ring Plate Large Dovetail

CA$3,220.00 - CA$3,220.00
CA$3,220.00
CA$3,220.00 - CA$3,220.00
CA$3,220.00
Sold out
Sold out
CA$1,792.00 - CA$1,792.00
CA$1,792.00
CA$1,792.00 - CA$1,792.00
CA$1,792.00

Software Bisque Paramount MEII Versa-Plate

SB10295

Flexible Paramount ME II OTA mounting plate replacement.The Paramount ME II Versa-Plate is included as a standard component of the Paramount ME II ...

View full details
CA$1,792.00 - CA$1,792.00
CA$1,792.00
CA$1,792.00 - CA$1,792.00
CA$1,792.00
Sold out
Sold out
CA$980.00 - CA$980.00
CA$980.00
CA$980.00 - CA$980.00
CA$980.00

Software Bisque Paramount MX/MX+ Versa-Plate

SB10254

Flexible Paramount MX/MX+ OTA mounting plate replacement.This versatile mounting plate (included with the Paramount MX/MX+) has a built-in female d...

View full details
CA$980.00 - CA$980.00
CA$980.00
CA$980.00 - CA$980.00
CA$980.00
Sold out
Sold out
CA$763.00 - CA$763.00
CA$763.00
CA$763.00 - CA$763.00
CA$763.00

Software Bisque Paramount MYT Versa-Plate

SB10414

Flexible Paramount MYT OTA mounting plate replacement.This versatile mounting plate (included with the Paramount MYT) has a built-in female dove ta...

View full details
CA$763.00 - CA$763.00
CA$763.00
CA$763.00 - CA$763.00
CA$763.00
Sold out
Sold out
CA$805.00 - CA$805.00
CA$805.00
CA$805.00 - CA$805.00
CA$805.00

Software Bisque Telescope Accessory Dovetail Plate

SB10325

Conveniently add equipment to Software Bisque OTA rings.The accessory dovetail plate mounts to Software Bisque OTA Rings as well as truss telescope...

View full details
CA$805.00 - CA$805.00
CA$805.00
CA$805.00 - CA$805.00
CA$805.00
Sold out
CA$266.00 - CA$266.00
CA$266.00
CA$266.00 - CA$266.00
CA$266.00

Starlight Instruments Finder Scope Bracket for 40-55mm Finder Scope

SI-FSB-CH4055

Fits Finder Scopes with 40-55mm Outside Diameter Lightweight Ring-Based Design Attaches to Starlight Instruments Feather Touch Focusers Requires S...

View full details
CA$266.00 - CA$266.00
CA$266.00
CA$266.00 - CA$266.00
CA$266.00
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00

Starlight Instruments Finder Scope Bracket w/ 45mm-53mm Sleeve

SI-FSB-4553

Accommodates finders with a 45mm to 53mm outer diameter Designed for Starlight Instruments Feather Touch focusers Precision-machined for a zero-fl...

View full details
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00
CA$378.00 - CA$378.00
CA$378.00
CA$378.00 - CA$378.00
CA$378.00

Starlight Instruments Finder Scope Bracket w/ 50mm-60mm Sleeve

SI-FSB-5060

Securely holds finderscopes and guide scopes from 50mm to 60mm in diameter Precision adjustment screws for accurate, stable alignment Designed for...

View full details
CA$378.00 - CA$378.00
CA$378.00
CA$378.00 - CA$378.00
CA$378.00
CA$378.00 - CA$378.00
CA$378.00
CA$378.00 - CA$378.00
CA$378.00

Starlight Instruments Finder Scope Bracket w/ Red Dot Finder

SI-FSB-CHRDF

Mounts directly to 2.5", 3.0", and 3.5" Feather Touch focusers Includes a red dot finder for intuitive, zero-magnification aiming Provides a stabl...

View full details
CA$378.00 - CA$378.00
CA$378.00
CA$378.00 - CA$378.00
CA$378.00
CA$84.00 - CA$84.00
CA$84.00
CA$84.00 - CA$84.00
CA$84.00

Starlight Instruments Mounting Bracket for FSB-CH4055 Finderscope

SI-FSB-CH-BRACKET

Designed for the FSB-CH4055 Finderscope Base Compatible with 2.5" Feather Touch Focusers Compatible with 3.0" Feather Touch Focusers Compatible wi...

View full details
CA$84.00 - CA$84.00
CA$84.00
CA$84.00 - CA$84.00
CA$84.00
CA$406.00 - CA$406.00
CA$406.00
CA$406.00 - CA$406.00
CA$406.00

Starlight Instruments Universal Dovetail Camera Mount

Options available

This Dovetail Camera mount works for control of lenses with Helical focusing on any DSLR camera. This can be controlled via PC or through a Hand p...

View full details
CA$406.00 - CA$406.00
CA$406.00
CA$406.00 - CA$406.00
CA$406.00
SVBONY Full Metal Finder Scope Dovetail Mounting Set for Telescopes
CA$18.00 - CA$18.00
CA$18.00
CA$18.00 - CA$18.00
CA$18.00

SVBONY Full Metal Finder Scope Dovetail Base and Mounting Plate Set

SV-F9176A

Full Metal Construction for Zero Flexure 42mm Wide Universal Mounting Base Fits Celestron, Orion, Sky-Watcher, and Vixen Telescopes Ideal for Addi...

View full details
CA$18.00 - CA$18.00
CA$18.00
CA$18.00 - CA$18.00
CA$18.00
CA$28.00 - CA$28.00
CA$28.00
CA$28.00 - CA$28.00
CA$28.00

SVBONY Red Medium Dovetail Clamp

SV-F9144C
4 in stock

CA$28.00 - CA$28.00
CA$28.00
CA$28.00 - CA$28.00
CA$28.00
SVBONY SV126 Adjustable Car Window Mount for Scope & Binoculars
CA$22.00 - CA$22.00
CA$22.00
CA$22.00 - CA$22.00
CA$22.00

SVBONY SV126 Adjustable Car Window Mount for Scopes and Binoculars

SV-F9197B

Maximum Load Capacity: 5kg Handle Length: 136mm (5.35in) Net Weight: 328g (11.52oz) Material: Metal and ABS Construction Attaches to Vehicle Windo...

View full details
CA$22.00 - CA$22.00
CA$22.00
CA$22.00 - CA$22.00
CA$22.00

Dovetail Standards and Building a Rigid Connection

Nearly all mounting hardware follows one of two dovetail standards, and mixing them without the correct clamp is the most common cause of a telescope sitting loose on an otherwise good mount.

  • Vixen-style dovetail (approximately 44 mm): The lighter standard, fine for small refractors and visual loads up to a few kilograms.
  • Losmandy-style dovetail (approximately 75 mm): The wider, stiffer standard used for heavier optics and imaging trains where flexure must be minimized.
  • Tube rings: Sized to the tube's outer diameter and lined to protect it; rings allow rotation for framing without unbolting the optic.
  • Mount saddles: The receiving clamp on the mount head. Dual-fit saddles accept both standards, and face-clamping designs grip more securely than a single point screw.
  • Side-by-side plates: Carry two optical tubes on one mount with balance adjustment in both axes.
  • Adapter plates: Convert between standards, add accessory mounting points, or raise a guide scope clear of an obstruction.

Why Choose David Astro for Mounting Hardware

Rigidity is cumulative. Every joint between the optic and the mount either holds or contributes to the error you spend the night chasing.

  • Standard matching: We confirm your mount's saddle type and specify a dovetail that fits it fully, rather than one that seats on an edge.
  • Flexure diagnosis: If your guiding shows drift that guiding corrections cannot fix, we will look at the mechanical chain with you — usually it is a guide scope bracket or an undersized dovetail.
  • Tube diameter fitting: Rings are matched to actual measured outer diameter, since nominal aperture and tube diameter are not the same number.
  • Authorized dealer: Genuine hardware with full manufacturer warranty, shipped from Canadian stock.
  • No cross-border fees: Canadian orders ship domestically with no duties or brokerage charges.

Mounting Hardware in Canada — Frequently Asked Questions

Vixen or Losmandy dovetail?
Losmandy for anything above roughly 7 kg or for imaging where flexure matters. Vixen is adequate for smaller refractors and visual use, and is lighter and more common on entry-level mounts.
Can I put a Vixen bar in a Losmandy saddle?
Only with a dual-fit saddle or an adapter clamp. Forcing a narrow bar into a wide clamp results in point contact, which is exactly the condition that causes slipping under load.
Why do my stars elongate only on one side of a meridian flip?
That pattern usually indicates differential flexure rather than tracking error. Check the guide scope bracket, the dovetail seating and the focuser drawtube, in that order.
How do I size tube rings?
By the tube's outer diameter, not aperture. Measure the tube itself, or tell us the exact telescope model and we will confirm the correct ring size.

Chasing flexure?

Tell us your tube, mount and payload and we will specify hardware that holds it solid. Ships from Canada with expert support.