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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.

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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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Original price $69.00 - Original price $69.00
Original price
$69.00
$69.00 - $69.00
Current price $69.00

Tele Vue Vixen-Tele Vue Mount Adapter

TV-AVT-1011

Connects Tele Vue Telescopes to Vixen Mounts Designed for Vixen Porta, Sphinx, and Great Polaris Mounts Accepts Tele Vue Telescope Cradles Machine...

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Original price $69.00 - Original price $69.00
Original price
$69.00
$69.00 - $69.00
Current price $69.00
Original price $849.00 - Original price $849.00
Original price
$849.00
$849.00 - $849.00
Current price $849.00

Wanderer Astro ETA M54 Electronic Tilt Adjuster

WA-WETA54

Three Motorized Adjusters 2 Micron Positioning Accuracy 5mm Back Focus Consumption 470g Total Weight Full NINA Integration for Auto-Tilt Descri...

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Original price $849.00 - Original price $849.00
Original price
$849.00
$849.00 - $849.00
Current price $849.00
Original price $34.00 - Original price $34.00
Original price
$34.00
$34.00 - $34.00
Current price $34.00

William Optics Extension Bar for iOptron Skyguider Pro

WO-M-IO-EB20RD
2 in stock

Adds a declination axis to the iOptron SkyGuider Pro Specifically designed to fit the iOptron SkyGuider Pro Description The Wi...

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Original price $34.00 - Original price $34.00
Original price
$34.00
$34.00 - $34.00
Current price $34.00
Original price $276.00 - Original price $288.00
Original price
$276.00 - $288.00
$276.00 - $288.00
Current price $276.00

William Optics High Latitude WO Vixen Style Base Mount

Options available

Designed specifically for the iOptron Skyguider Pro Enables stable, precise polar alignment at high latitudes Includes Vixen-style mounting saddle...

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Original price $276.00 - Original price $288.00
Original price
$276.00 - $288.00
$276.00 - $288.00
Current price $276.00
Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00

William Optics iOptron Skyguider Pro Dec Adapter

WO-M-IOPSG-SPM

Directly Mounts William Optics Scopes to iOptron Skyguider Pro Replaces the Standard Declination (DEC) Bracket Low-Profile Design for Enhanced Sta...

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Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00
Original price $229.00 - Original price $229.00
Original price
$229.00
$229.00 - $229.00
Current price $229.00

William Optics Low Latitude WO Vixen Style Base Mount

WO-YG-IO-SG01L

Designed for Low Latitude Observers Solid Aluminum Alloy Construction Precision Altitude & Azimuth Adjustment Knobs Vixen-Style Mounting Base ...

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Original price $229.00 - Original price $229.00
Original price
$229.00
$229.00 - $229.00
Current price $229.00
Original price $90.00 - Original price $90.00
Original price
$90.00
$90.00 - $90.00
Current price $90.00

William Optics Mortar Pier Head Adapter - 3/8" Screw Mount

WO-YG-38-MTAD-BL

Designed to fit a 3/8" threaded pier. Universal 3/8" thread Limited lifetime warranty Description Warranty The William Optics M...

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Original price $90.00 - Original price $90.00
Original price
$90.00
$90.00 - $90.00
Current price $90.00
Original price $806.00 - Original price $806.00
Original price
$806.00
$806.00 - $806.00
Current price $806.00

William Optics RC Focuser w/ Optional 0.8x RC Reducer Flattener

Options available

Provides precise focusing for Ritchey-Chrétien telescopes Includes an optional 0.8x reducer flattener for improved image quality Description...

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Original price $806.00 - Original price $806.00
Original price
$806.00
$806.00 - $806.00
Current price $806.00
Original price $99.00 - Original price $99.00
Original price
$99.00
$99.00 - $99.00
Current price $99.00

ZWO 160mm Pier Extension

ZWO-PE160
16 in stock

Adds 160mm (6.29") of height for increased OTA clearance Designed for ZWO AM5 and AM3 mounts Hollow, aircraft-grade aluminum construction for rigi...

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Original price $99.00 - Original price $99.00
Original price
$99.00
$99.00 - $99.00
Current price $99.00
Original price $49.00 - Original price $49.00
Original price
$49.00
$49.00 - $49.00
Current price $49.00

ZWO AMH Hand Controller

ZWO-AMH

Allows to control AM3 & AM5 mounts Description In the Box ...

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Original price $49.00 - Original price $49.00
Original price
$49.00
$49.00 - $49.00
Current price $49.00
Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00

ZWO Counterweight Bar for AM5 Mount

ZWO-BC230
7 in stock

Extends AM5 mount payload capacity beyond 28 lbs 230 mm (9") total length for flexible balancing Standard 0.787" (20 mm) diameter fits common coun...

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Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00
Original price $10.00 - Original price $10.00
Original price
$10.00
$10.00 - $10.00
Current price $10.00

ZWO DC Y Splitter Cable

ZWO-DC-Y-Split
62 in stock

Powers two 12V accessories from one source Input: 1x Male DC Cigarette Lighter Plug Output: 2x Female DC Power Connectors Cable Length: 6 inches 2...

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Original price $10.00 - Original price $10.00
Original price
$10.00
$10.00 - $10.00
Current price $10.00
Original price $15.00 - Original price $15.00
Original price
$15.00
$15.00 - $15.00
Current price $15.00

ZWO Replacement Fan for ASI Cameras

Options available
12 variants in stock

Official ZWO OEM replacement fan Restores original cooling performance to Cooled/Pro cameras Includes all necessary mounting hardware Backed by a ...

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Original price $15.00 - Original price $15.00
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$15.00
$15.00 - $15.00
Current price $15.00
Original price $10.00 - Original price $10.00
Original price
$10.00
$10.00 - $10.00
Current price $10.00

ZWO Shutter Release Cable for ASIAIR PRO

Options available
3 variants in stock

Unlocks bulb exposures beyond 30 seconds on select Nikon DSLRs Connects ASIAIR PRO or PLUS directly to the camera's shutter port 1-meter (3.3 ft) ...

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Original price $10.00 - Original price $10.00
Original price
$10.00
$10.00 - $10.00
Current price $10.00

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.