Skip to content
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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

SVBONY SV211 203mm Saddle Handle Bar
SVBONY SV211 203mm Saddle Handle Bar
$33.17 - $33.17
$33.17
$33.17 - $33.17
$33.17

SVBONY SV211 203mm Saddle Handle Bar

SV-W9163B

203mm Length 161.5g / 5.7oz Net Weight Machined 6061T Aluminum Construction Direct Fit for SVBONY SV503 102mm & SV550 122mm OTAs Integrated Vi...

View full details
$33.17 - $33.17
$33.17
$33.17 - $33.17
$33.17
SVBONY SV219 Vixen Style Dovetail Plate for Telescope Mounting
$11.51 - $11.51
$11.51
$11.51 - $11.51
$11.51

SVBONY SV219 120mm Black Vixen-Style Dovetail Mounting Plate

SV-W9175A

Function: Vixen-Style Dovetail Plate Material: Strong and Lightweight Aluminum Construction Finish: Black Anodized for Corrosion and Wear Resistan...

View full details
$11.51 - $11.51
$11.51
$11.51 - $11.51
$11.51
SVBONY SV219 Vixen Style Dovetail Plate for Telescope Mounting
$13.67 - $13.67
$13.67
$13.67 - $13.67
$13.67

SVBONY SV219 210mm Black Vixen-Style Dovetail Mounting Plate

SV-W9175B
4 in stock

Vixen-Standard Width for Broad Mount Compatibility Lightweight and Rigid Aluminum Construction Durable Black Anodized Finish Resists Wear and Corr...

View full details
$13.67 - $13.67
$13.67
$13.67 - $13.67
$13.67
SVBONY SV219 Vixen Style Dovetail Plate for Telescope Mounting
$18.33 - $18.33
$18.33
$18.33 - $18.33
$18.33

SVBONY SV219 300mm Black Vixen-Style Dovetail Mounting Plate

SV-W9175C
4 in stock

Functions as a Vixen-Style Dovetail Plate Machined to Vixen Standard Width for broad compatibility Lightweight and rigid Aluminum Construction Dur...

View full details
$18.33 - $18.33
$18.33
$18.33 - $18.33
$18.33
SVBONY SV224 Universal Dovetail Base for Finder Scope Telescope Mount
$10.07 - $10.07
$10.07
$10.07 - $10.07
$10.07

SVBONY SV224 4.2mm Universal Dovetail Base for Finder Scopes

SV-W2370A
3 in stock

Universal dovetail base for finder scopes and other aiming devices Features 4.2mm universal dovetail slots for wide compatibility Equipped with tw...

View full details
$10.07 - $10.07
$10.07
$10.07 - $10.07
$10.07
Tele Vue 3 Ring Mount - Satin 1
$165.00 - $165.00
$165.00
$165.00 - $165.00
$165.00

Tele Vue 3" Ring Mount - Satin

TV-RS3-8003
1 in stock

Telescope Compatibility: Fits any 3-inch (76.2mm) outer diameter tube Mounting Interface: Three 1/4"-20 tapped holes Accessory Interface: Dual top...

View full details
$165.00 - $165.00
$165.00
$165.00 - $165.00
$165.00
Tele Vue 4 Ring Mount - Satin 1
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00

Tele Vue 4" Ring Mount - Satin

TV-RS4-8004

Fits: Tele Vue TV-102, NP101, and other 4" diameter tubes Mounting: Direct attachment to Tele Vue mounts or Vixen-style dovetails Hinge Type: Clam...

View full details
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00
Tele Vue Mt. Rng Set for 4" OTA 1
$343.00 - $343.00
$343.00
$343.00 - $343.00
$343.00

Tele Vue Mounting Ring Set for 4" OTA

TV-MRS-4011

For tubes exactly 4" in outside diameter (NP101/NP101is) Bat-handle locks Two accessory channels per ring (#10-32 tapped) 1/4"-20 tapped hole top ...

View full details
$343.00 - $343.00
$343.00
$343.00 - $343.00
$343.00
Tele Vue Mt. Rng Set for 5" OTA 1
$359.00 - $359.00
$359.00
$359.00 - $359.00
$359.00

Tele Vue Mounting Ring Set for 5" OTA

TV-MRS-5000

Designed for Tele Vue 5" (127mm) Optical Tubes Hinged Clamshell-Style Rings Felt-Lined for OTA Protection Multiple 1/4"-20 Threaded Mounting Holes...

View full details
$359.00 - $359.00
$359.00
$359.00 - $359.00
$359.00
Tele Vue NP127is Bottom Plate 1
$69.00 - $69.00
$69.00
$69.00 - $69.00
$69.00

Tele Vue NP127is Bottom Plate

TV-BPL-1098

Attaches to Tele Vue MRS-5000 Mounting Rings Pre-drilled for Tele Vue Mounts Includes 1/4"-20 and 3/8"-16 Tripod Sockets Solid Machined Aluminum C...

View full details
$69.00 - $69.00
$69.00
$69.00 - $69.00
$69.00
Tele Vue Piggy-Cam 2
Tele Vue Piggy-Cam 1
$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00

Tele Vue Piggy-Cam

TV-PGC-1001

Mounts directly to Tele Vue telescope ring systems Standard 1/4"-20 camera mounting thread Machined from solid, black anodized aluminum Captive, k...

View full details
$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00

TS-Optics V-Series Dovetail for DSLR - 120mm

TS-PSFotoDel
Only 5 left!

The TS Optics PSFOTODEL dovetail plate allows you to attach heavy cameras, spotting scopes, telephoto lenses ... to an astronomical mount. One scre...

View full details
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00
Wanderer Astro Losmandy Dovetail Bracket Kit (Long) for WandererCover
$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00

Wanderer Astro Losmandy Dovetail Bracket Kit for WandererCover - Long

WA-LDB-L

Telescopic Design: Allows for flexible positioning on the dovetail bar to accommodate accessories. Lightweight Construction: Designed for minima...

View full details
$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00
$48.95 - $48.95
$48.95
$48.95 - $48.95
$48.95

Wanderer Astro Losmandy Dovetail Bracket Kit for WandererCover/WandererBox - Short

WA-LDB-S
1 in stock

Securely Mounts Wanderer Astro Control Units Compatible with Losmandy D-Style Dovetail Plates Designed for WandererBox V3, WandererCover V4 Pro-EC...

View full details
$48.95 - $48.95
$48.95
$48.95 - $48.95
$48.95
$10.64 - $10.64
$10.64
$10.64 - $10.64
$10.64

Wanderer Astro Mini Finderscope Dovetail Shoe for WandererBox

WA-DB-1
7 in stock

Directly Mounts to the WandererBox Chassis Accepts Standard Vixen/Synta-Style Finderscope Stalks Consolidates Pointing and Guiding Hardware Simpli...

View full details
$10.64 - $10.64
$10.64
$10.64 - $10.64
$10.64
Wanderer Astro Truss Telescope Motorized Flat Panel Installation Kit
$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00

Wanderer Astro Truss Telescope Motorized Flat Panel Installation Kit

WA-RC-Kit

Secure Mounting for Wanderer Flat Panels Compatible with GSO & William Optics Truss RCs Designed for WandererCover V4 & Eclipse Aerospace-...

View full details
$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00
$34.05 - $34.05
$34.05
$34.05 - $34.05
$34.05

Wanderer Astro Vixen Dovetail Bracket Kit For WandererBox

WA-VDB
1 in stock

Attaches WandererBox to any Vixen-style dovetail Functions as a mini Losmandy plate for accessory mounting Machined from aerospace-grade aluminum ...

View full details
$34.05 - $34.05
$34.05
$34.05 - $34.05
$34.05
$48.00 - $48.00
$48.00
$48.00 - $48.00
$48.00

William Optics 120mm Saddle Handle Bar

WO-M-HC120BL
1 in stock

120 mm Length 44 mm Width Integrated Mini-Vixen Style Saddle Patented Handlebar Design Lightweight and Durable Construction Description FAQ Spe...

View full details
$48.00 - $48.00
$48.00
$48.00 - $48.00
$48.00
$118.00 - $118.00
$118.00
$118.00 - $118.00
$118.00

William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings

WO-M-HC120BL-GR50SL

120 mm Total Length Patented Handle and Saddle Design Mini-Vixen Dovetail Saddle Includes 50mm Guide Rings 44 mm Width Description FAQ Specific...

View full details
$118.00 - $118.00
$118.00
$118.00 - $118.00
$118.00
$97.00 - $97.00
$97.00
$97.00 - $97.00
$97.00

William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings - No Adjustments Screws

WO-M-HC120BL-GR50IISL

120 mm Length Integrated 50mm Guide Rings Mini-Vixen Style Top Saddle 44 mm Width Designed for Maximum Rigidity Description FAQ Specifications ...

View full details
$97.00 - $97.00
$97.00
$97.00 - $97.00
$97.00
$108.00 - $108.00
$108.00
$108.00 - $108.00
$108.00

William Optics 243mm Saddle Handle Bar

WO-M-HC243BL

243mm total length Functions as both a carrying handle and an accessory saddle Patented design for rigidity and ergonomics Vixen-style saddle for ...

View full details
$108.00 - $108.00
$108.00
$108.00 - $108.00
$108.00
$141.00 - $141.00
$141.00
$141.00 - $141.00
$141.00

William Optics 243mm Saddle Handle Bar with 50mm Guiding Rings

WO-M-HC243BL-GR50IISL

Compatible with William Optics' slide-base guide rings Can be used to make William Optics telescopes portable Description The Wil...

View full details
$141.00 - $141.00
$141.00
$141.00 - $141.00
$141.00
$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00

William Optics Cat Mounting Ring

WO-M-MR50RC-BL

50mm Inner Diameter Solid Aluminum Construction Anodized Blue Finish 1/4"-20 Threaded Mounting Holes Weight: 4.9 oz (140 g) Description FAQ Spe...

View full details
$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

William Optics Cat Series Saddle Handle Bar

Options available
3 variants in stock

Length: 107 mm Integrated Mini-Vixen Style Saddle Weight: 0.12 kg / 0.26 lbs Designed for William Optics Cat Series Telescopes Adds a carrying han...

View full details
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

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.