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Mount Accessories

A mount rarely arrives complete. Polar alignment needs a scope or a camera, balance needs the right counterweights and extension bars, meridian clearance often needs a pier extension, and the whole thing needs power that survives a cold night. David Astro carries mount accessories in Canada — polar scopes, counterweights, wedges, pier extensions, hand controller brackets, cable management and power distribution — stocked in Canada and shipped worldwide.

These are the parts that turn a working mount into a well-behaved one. Tell us your mount model and what is bothering you about your setup and we will point at the accessory that fixes it.

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Orion Optics UK 400mm Trunion rings and blocks to fit OOUK 16" telescopes
CA$255.00 - CA$255.00
CA$255.00
CA$255.00 - CA$255.00
CA$255.00

Orion Optics UK 400mm Trunion rings and blocks to fit OOUK 16" telescopes

OOUK-400MM-TRUNION-RINGS-BLOCKS-OOUK

Sized for 400mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty Trunion Rings and Blocks -- OOUK 1...

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CA$255.00 - CA$255.00
CA$255.00
CA$255.00 - CA$255.00
CA$255.00
Orion Optics UK 400mm Trunion rings, spacers and blocks for 3rd party telescopes.
CA$341.00 - CA$341.00
CA$341.00
CA$341.00 - CA$341.00
CA$341.00

Orion Optics UK 400mm Trunion rings, spacers and blocks for 3rd party telescopes.

OOUK-400MM-TRUNION-RINGS-SPACERS-BLOCKS

Sized for 400mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty 400mm Trunion Rings, Spacers and B...

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CA$341.00 - CA$341.00
CA$341.00
CA$341.00 - CA$341.00
CA$341.00
Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser
CA$272.00 - CA$272.00
CA$272.00
CA$272.00 - CA$272.00
CA$272.00

Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser

OOUK-ERIS-ADAPTOR-PLATE-225MM-DIAMETER

Adapts Orion Optics UK Eris 2″ focusers to 225mm diameter tubes Adds only 11mm of height at the central axis Allows for 360° focuser rotation for ...

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CA$272.00 - CA$272.00
CA$272.00
CA$272.00 - CA$272.00
CA$272.00
Orion Optics UK Radius Blocks for 200mm Scopes
CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00

Orion Optics UK Radius Blocks for 200mm Scopes

OOUK-200MM-RADIUS-BLOCKS-EACH

Precision-machined for 200mm diameter optical tubes Provides a stable, non-flexing mounting point for accessories Ideal for finderscopes, guide sc...

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CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00
Orion Optics UK Radius Blocks for 300mm Scopes
CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00

Orion Optics UK Radius Blocks for 300mm Scopes

OOUK-300MM-RADIUS-BLOCKS-EACH

Designed for 300mm Diameter Telescope Tubes Provides a Stable, Curved Mounting Surface Distributes Clamping Force to Prevent Tube Damage Ideal for...

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CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00
Orion Optics UK Radius Blocks for 350mm Telescopes
CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00

Orion Optics UK Radius Blocks for 350mm Telescopes

OOUK-350-400-MM-RADIUS-BLOCKS

Provides a stable, flat mounting surface on a curved tube Precisely machined to match the radius of a 350mm telescope Ideal for attaching dovetail...

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CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00
Orion Optics UK Radius blocks to fit 150mm scope
CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00

Orion Optics UK Radius blocks to fit 150mm scope

OOUK-150MM-RADIUS-BLOCKS-EACH

Designed for 150mm Telescope Tubes Provides a Curved Mounting Surface Ensures a Secure, Flush Fit for Accessories Sold Individually Description...

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CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00
Orion Optics UK Radius Blocks to Fit 250mm Scope
CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00

Orion Optics UK Radius Blocks to Fit 250mm Scope

OOUK-250MM-RADIUS-BLOCKS-EACH

Designed to perfectly match 250mm diameter telescope tubes Provides a stable, no-flex mounting surface for accessories Prevents tube damage by dis...

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CA$100.00 - CA$100.00
CA$100.00
CA$100.00 - CA$100.00
CA$100.00
CA$58.00 - CA$64.00
CA$58.00 - CA$64.00
CA$58.00 - CA$64.00
CA$58.00

Pegasus EQDIR USB Stick for EQMOD

Options available
12 variants in stock

Our new compact EQDir USB Stick Adapter for EQMOD allows direct connection of Skywatcher HEQ5 Syntrek/PRO, NEQ6 Syntrek/PRO, AZ EQ6-GT and EQ8 moun...

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CA$58.00 - CA$64.00
CA$58.00 - CA$64.00
CA$58.00 - CA$64.00
CA$58.00
CA$43.00 - CA$43.00
CA$43.00
CA$43.00 - CA$43.00
CA$43.00

Pegasus NYX-101 Polemaster Detachable Adapter

PEG-NYX-PLMSTR

Enables use of QHY Polemaster on Pegasus Astro NYX-101 and NYX-88 mounts Streamlines polar alignment for faster, more accurate setup Detachable de...

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CA$43.00 - CA$43.00
CA$43.00
CA$43.00 - CA$43.00
CA$43.00
CA$14.00 - CA$14.00
CA$14.00
CA$14.00 - CA$14.00
CA$14.00

Pegasus Pack of 2x USB2.0 Type-A male to USB mini-B 5pin Male Angled Cables- 0.5m

PEG-USB2MINI-05M
2 in stock

Connection: USB 2.0–A male USB mini-B 5pin male angled AWG 28 data line / AWG 24 power line Nickel-plated Cable length: ca...

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CA$14.00 - CA$14.00
CA$14.00
CA$14.00 - CA$14.00
CA$14.00
CA$16.00 - CA$16.00
CA$16.00
CA$16.00 - CA$16.00
CA$16.00

Pegasus Pack of 2x USB2.0 Type-A male to USB mini-B 5pin Male Angled Cables- 1m

PEG-USB2MINI-1M

Pack of 2 USB 2.0 Cables USB-A Male to Angled USB Mini-B 5-pin Male 1.0 meter (3.3 ft) Cable Length Angled Connector for Strain Relief Ideal for A...

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CA$16.00 - CA$16.00
CA$16.00
CA$16.00 - CA$16.00
CA$16.00
CA$14.00 - CA$14.00
CA$14.00
CA$14.00 - CA$14.00
CA$14.00

Pegasus Pack of 2x USB2.0 Type-A male to USB2.0 Type-2 Male Angled Cables- 0.5m

PEG-USB2B-05M

Pack of two USB 2.0 cables USB Type-A Male to 90° Angled USB Type-B Male 50 cm (0.5 m) length for minimal cable drag Up to 480Mb/s data transfer r...

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CA$14.00 - CA$14.00
CA$14.00
CA$14.00 - CA$14.00
CA$14.00
CA$16.00 - CA$16.00
CA$16.00
CA$16.00 - CA$16.00
CA$16.00

Pegasus Pack of 2x USB2.0 Type-A male to USB2.0 Type-B Male Angled Cables- 1m

PEG-USB2B-1M
5 in stock

Pack of 2 USB 2.0 Cables USB-A Male to 90° Angled USB-B Male 1 meter (3.3 ft) Length Up to 480 Mb/s Data Transfer Rate 4.5 mm Cable Diameter De...

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CA$16.00 - CA$16.00
CA$16.00
CA$16.00 - CA$16.00
CA$16.00
CA$20.00 - CA$20.00
CA$20.00
CA$20.00 - CA$20.00
CA$20.00

Pegasus Pack of 2x USB3.0 Type-A male to USB3.0 Type-B Male Cables- 0.5m

PEG-USB3B-05M
5 in stock

Pack of 2 USB 3.0 Type-A to Type-B Cables Data Transfer Rate: Up to 5 Gbit/s Length: 50 cm (0.5 m) Conductor Gauge: 28 AWG Data / 24 AWG Power Ide...

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CA$20.00 - CA$20.00
CA$20.00
CA$20.00 - CA$20.00
CA$20.00
CA$27.00 - CA$27.00
CA$27.00
CA$27.00 - CA$27.00
CA$27.00

Pegasus USB3.0 Type-A male to USB3.0 Type-B Male Premium Cable- 1m

PEG-USB3B-1PREM
1 in stock

USB 3.0 Type-A to Type-B Connection 5Gb/s Maximum Data Transfer Rate 1 meter (3.3 ft) Cable Length Gold-Plated Connectors with Metal Housings Doub...

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CA$27.00 - CA$27.00
CA$27.00
CA$27.00 - CA$27.00
CA$27.00
CA$28.00 - CA$28.00
CA$28.00
CA$28.00 - CA$28.00
CA$28.00

Pegasus USB3.0 Type-A male to USB3.0 Type-B Male Premium Cable- 2m

PEG-USB3B-2PREM
2 in stock

USB 3.0 Type-A to Type-B Cable 5Gb/s Maximum Data Transfer Rate 2 m (6.56 ft) Length Gold-Plated Connectors Durable Metal Connector Housings 5.5 m...

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CA$28.00 - CA$28.00
CA$28.00
CA$28.00 - CA$28.00
CA$28.00
CA$15.00 - CA$15.00
CA$15.00
CA$15.00 - CA$15.00
CA$15.00

Pegasus USB3.1 Gen2 Type-C Male to USB3.0 Type-A Male Cable- 0.5m

PEG-USB3C-A-05M
2 in stock

USB 3.1 Gen 2 data transfer rate up to 10 Gbps Connects USB Type-C devices to Type-A ports Compact 0.5 m (1.64 ft) length reduces cable clutter Du...

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CA$15.00 - CA$15.00
CA$15.00
CA$15.00 - CA$15.00
CA$15.00
CA$21.00 - CA$21.00
CA$21.00
CA$21.00 - CA$21.00
CA$21.00

Pegasus USB3.2 Gen1 Type-A male to Type-B Male Cable with Metal Jacket- 0.5m

PEG-USB3B-METAL-05M

USB 3.2 Gen 1 Type-A to Type-B Connectors Durable Metal Jacket Construction 0.5 meter (approx. 1.6 ft) Length 5.5 mm Cable Diameter Ideal for Astr...

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CA$21.00 - CA$21.00
CA$21.00
CA$21.00 - CA$21.00
CA$21.00
CA$27.00 - CA$27.00
CA$27.00
CA$27.00 - CA$27.00
CA$27.00

Pegasus USB3.2 Gen1 Type-A male to Type-B Male Cable with Metal Jacket- 1m

PEG-USB3B-METAL-1M
7 in stock

USB 3.2 Gen 1 Type-A to Type-B Connection 1.0 meter (approx. 3.3 ft) Length Durable Metal Jacket Construction 5.5mm Cable Diameter Silver Color ...

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CA$27.00 - CA$27.00
CA$27.00
CA$27.00 - CA$27.00
CA$27.00
PrimaLuceLab Adapter EQ6 / AZ-EQ6 / CGEM for C82 pier for concrete base
CA$329.00 - CA$329.00
CA$329.00
CA$329.00 - CA$329.00
CA$329.00

PrimaLuceLab Adapter EQ6 / AZ-EQ6 / CGEM for C82 pier for concrete base

PLL-C82-C-EQ6-FL

Securely attaches Sky-Watcher EQ6, AZ-EQ6, and Celestron CGEM series mounts Designed specifically for the PrimaLuceLab C82 concrete pier Enables a...

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CA$329.00 - CA$329.00
CA$329.00
CA$329.00 - CA$329.00
CA$329.00
PrimaLuceLab Adapter for EQ5 / HEQ5 / AZ-EQ5 for C82 pier for concrete base
CA$329.00 - CA$329.00
CA$329.00
CA$329.00 - CA$329.00
CA$329.00

PrimaLuceLab Adapter for EQ5 / HEQ5 / AZ-EQ5 for C82 pier for concrete base

PLL-C82-C-EQ5-FL

Direct-fit adapter for PrimaLuceLab C82 Pier Compatible with Sky-Watcher EQ5 mounts Compatible with Sky-Watcher HEQ5 mounts Compatible with Sky-Wa...

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CA$329.00 - CA$329.00
CA$329.00
CA$329.00 - CA$329.00
CA$329.00
CA$49.00 - CA$49.00
CA$49.00
CA$49.00 - CA$49.00
CA$49.00

PrimaLuceLab AZ-EQ5 PLUS Adapter Plate

PLL-PLLFLAZEQ5
1 in stock

AZ-EQ5 PLUS adapter plate

CA$49.00 - CA$49.00
CA$49.00
CA$49.00 - CA$49.00
CA$49.00
PrimaLuceLab Blank adapter for C120 pier
CA$525.00 - CA$525.00
CA$525.00
CA$525.00 - CA$525.00
CA$525.00

PrimaLuceLab Blank adapter for C120 pier

PLL-C120-BLANK

Blank top plate for custom drilling to match any mount pattern Designed specifically for the PrimaLuceLab C120 Pier Solid aluminum construction en...

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CA$525.00 - CA$525.00
CA$525.00
CA$525.00 - CA$525.00
CA$525.00

What Actually Improves a Mount in Use

Most mount complaints resolve to one of four things: alignment accuracy, balance, clearance or power stability. Each has a specific accessory answer.

  • Polar scopes and alignment aids: Illuminated reticles and electronic polar alignment cameras that reduce alignment from a lengthy drift procedure to a few minutes.
  • Counterweights and extension bars: Correct balance reduces motor load and improves guiding; an extension bar lets a short heavy tube be balanced with less total weight.
  • Pier extensions: Raise the mount head so a long tube clears the tripod legs at the meridian, which is the fix for the most common and most annoying mechanical collision.
  • Equatorial wedges: Convert an alt-azimuth fork mount to equatorial tracking, eliminating field rotation for imaging.
  • Cable management: Clips, wraps and routing hardware that prevent the snag which ends an unattended session at 2 a.m.
  • Power supplies and distribution: Regulated supplies sized for cold-weather draw, since voltage sag is a frequent cause of stalls and tracking faults.

Why Choose David Astro for Mount Accessories

Accessory choice here is entirely mount-specific, so identification matters more than selection.

  • Model-specific fitment: Counterweight shaft diameters, pier extension bolt patterns and wedge mounting all vary by mount, and we confirm the match before shipping.
  • Meridian clearance calculated: Give us your tube length and tripod height and we will work out whether you need an extension and how much.
  • Cold-weather power sizing: We size supplies for the current your mount draws when the grease is stiff at minus 25, not for the specification at room temperature.
  • Authorized dealer: Genuine accessories with full manufacturer warranty, in stock, with fast shipping across Canada and worldwide.
  • Domestic shipping: Heavy items like counterweights ship from Canada without duties or brokerage fees.

Mount Accessories in Canada — Frequently Asked Questions

Do I need a pier extension?
If your telescope strikes a tripod leg when crossing the meridian, or you cannot reach targets near the pole, yes. Send us your tube length and mount model and we will calculate the required height.
What counterweight do I need?
Enough to balance your payload at a sensible position on the shaft — roughly two thirds out, not at the very end. Shaft diameter is mount-specific, so tell us the model rather than the weight alone.
Is an electronic polar alignment camera worth it?
For imaging, usually yes. It reaches better accuracy than a polar scope in a fraction of the time and works when Polaris is obscured, which matters from urban backyards.
Why does my mount stall in the cold?
Most often voltage sag under load rather than a mechanical fault. Cold thickens lubricant, current draw rises, and an undersized supply or a long thin cable drops voltage below the mount's tolerance.

Finishing your mount setup?

Tell us your mount model and what is giving you trouble. We will specify the fix. Full warranty, shipped from Canada.