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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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$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00

iOptron HEM27/HEM44 Counterweight Bar

IOP-8456SL

Official iOptron accessory for HEM series mounts Enables balancing of heavier telescope payloads Compatible with iOptron HEM27 and HEM44 mounts Fe...

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$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00
iOptron Illuminating LED for CEM26/GEM28 AccuAlign Polar Scope
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00

iOptron Illuminating LED for CEM26/GEM28 AccuAlign Polar Scope

IOP-3334

Official accessory for iOptron CEM26 and GEM28 mounts Illuminates the AccuAlign polar scope reticle Enables fast and accurate polar alignment in t...

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$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00
$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00

iOptron iPolar Electronic Polarscope

IOP-3339-034

Achieves polar alignment with 30 arcsecond resolution Wide 13° field of view for robust plate-solving Simple Mini USB 2.0 interface for power and ...

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$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00
iOptron iPolar Electronic Polarscope for HEM15/HEM27/HEM44 Mounts
$223.00 - $223.00
$223.00
$223.00 - $223.00
$223.00

iOptron iPolar Electronic Polarscope for HEM15/HEM27/HEM44 Mounts

IOP-3339A-HEM

Achieves polar alignment precision of approximately 30 arcseconds Designed for internal installation on iOptron HEM15, HEM27, and HEM44 mounts Sim...

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$223.00 - $223.00
$223.00
$223.00 - $223.00
$223.00
iOptron iPolar Internal Electronic Polar Scope for CEM120 Mounts
$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00

iOptron iPolar Internal Electronic Polar Scope for CEM120 Mounts

IOP-3339A-120

Achieves polar alignment with 30 arcsecond resolution 13° wide field of view digital camera Designed for internal installation in iOptron CEM120 m...

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$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00
iOptron iPolar Internal Electronic Polar Scope for CEM26/GEM28/SkyGuider Pro Mounts
$218.00 - $218.00
$218.00
$218.00 - $218.00
$218.00

iOptron iPolar Internal Electronic Polar Scope for CEM26/GEM28/SkyGuider Pro Mounts

IOP-3339R

Internal design for CEM26, GEM28, and SkyGuider Pro mounts Achieves polar alignment with 30 arcsecond resolution 13° wide field of view camera Sof...

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$218.00 - $218.00
$218.00
$218.00 - $218.00
$218.00
iOptron iPolar Internal Electronic Polar Scope for CEM40 Mounts
$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00

iOptron iPolar Internal Electronic Polar Scope for CEM40 Mounts

IOP-3339A-040

Achieves polar alignment to a resolution of 30 arcseconds Wide 13° field of view for rapid plate solving Installs internally on iOptron CEM40 and ...

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$238.00 - $238.00
$238.00
$238.00 - $238.00
$238.00
iOptron iPolar™ Electronics Polar Scope
$218.00 - $218.00
$218.00
$218.00 - $218.00
$218.00

iOptron iPolar™ Electronics Polar Scope

IOP-3339

Achieves polar alignment precision of approximately 30 arcseconds Wide ~13 degree field of view for easy pole acquisition High-resolution sensor p...

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$218.00 - $218.00
$218.00
$218.00 - $218.00
$218.00
$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00

iOptron iStarFi Wi-Fi Adapter for CEM40/GEM45

IOP-7434

Wireless Mount Control for CEM40/GEM45 Mounts Supports 802.11b/g/n Wi-Fi Protocol Access Point (AP) and Station (STA) Modes ASCOM and SkySafari Pr...

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$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00
iOptron MiniTower Pro/II Altitude Gear and Clutch Upgrade Kit
$108.00 - $108.00
$108.00
$108.00 - $108.00
$108.00

iOptron MiniTower Pro/II Altitude Gear and Clutch Upgrade Kit

IOP-8955

Direct upgrade for iOptron MiniTower Pro and MiniTower II mounts Improves altitude axis performance Reduces gear backlash and slipping Enhances st...

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$108.00 - $108.00
$108.00
$108.00 - $108.00
$108.00
iOptron MiniTower Pro/II Altitude Locking Knob Upgrade Kit
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

iOptron MiniTower Pro/II Altitude Locking Knob Upgrade Kit

IOP-8955-DKL

Direct upgrade for iOptron MiniTower Pro and MiniTower II mounts Improves altitude axis locking and stability Large, easy-to-grip design Ideal for...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
iOptron Polar Scope for SmartEQ
$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00

iOptron Polar Scope for SmartEQ

IOP-3130

Enables Precise Polar Alignment Designed Specifically for the iOptron SmartEQ Mount Essential for Long-Exposure Astrophotography Improves GoTo Poi...

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$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00
iOptron Polar Scope Kit for CEM26
$129.00 - $129.00
$129.00
$129.00 - $129.00
$129.00

iOptron Polar Scope Kit for CEM26

IOP-C2633

Designed specifically for the iOptron CEM26 mount Provides a direct, through-the-axis optical view of the celestial pole Enables fast and intuitiv...

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$129.00 - $129.00
$129.00
$129.00 - $129.00
$129.00
iOptron Polar Scope Kit for GEM28
$129.00 - $129.00
$129.00
$129.00 - $129.00
$129.00

iOptron Polar Scope Kit for GEM28

IOP-G2833

Optical Polar Alignment Accessory for iOptron GEM28 Mounts Enables Fast, Computer-Free Setup Illuminated Reticle for Easy Sighting of Polaris Idea...

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$129.00 - $129.00
$129.00
$129.00 - $129.00
$129.00
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00

iOptron Polar Scope Mounting Bracket for PST Micro Tracker

IOP-3340-PST

Enables Precise Polar Alignment Designed for the iOptron PST Micro Tracker (#3680) Compatible with AccuAlign (#3330-HST) Polar Scopes Compatible w...

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$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00
$25.00 - $25.00
$25.00
$25.00 - $25.00
$25.00

iOptron RS232-RJ9 Serial Cable

IOP-8412

Connects PC RS232 Serial Port to an iOptron Mount Enables Direct Mount Control via ASCOM Required for Mount and Hand Controller Firmware Updates S...

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$25.00 - $25.00
$25.00
$25.00 - $25.00
$25.00
iOptron SkyTracker Pro Counterweight Package (3324)
$99.00 - $99.00
$99.00
$99.00 - $99.00
$99.00

iOptron SkyTracker Pro Counterweight Package (3324)

IOP-3324
1 in stock

Enables balancing of heavier camera and lens combinations Improves tracking accuracy by reducing motor strain Attaches directly to the iOptron Sky...

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$99.00 - $99.00
$99.00
$99.00 - $99.00
$99.00
$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00

iOptron Stainless Steel Extension Bar for CEM40/50/60/70/etc.

IOP-8026
1 in stock

Extends counterweight shaft length Increases counterweight leverage Allows for balancing heavier payloads with fewer weights Stainless steel const...

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$78.00 - $78.00
$78.00
$78.00 - $78.00
$78.00
iOptron Star Knobs
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

iOptron Star Knobs

IOP-8340

Ergonomic Star-Shaped Grip Enables Tool-Free Adjustments Improves Ease of Use in the Field Ideal for Use with Gloves Description FAQ Specificat...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
iOptron Star Knobs with Center Post
$38.00 - $38.00
$38.00
$38.00 - $38.00
$38.00

iOptron Star Knobs with Center Post

IOP-8340-Pier

Ergonomic star shape for enhanced grip Integrated center post protects equipment surfaces Ideal replacement for standard bolts on mounts and acces...

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$38.00 - $38.00
$38.00
$38.00 - $38.00
$38.00
iOptron StarFi TM Wi-Fi Telescope Adapter
$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00

iOptron StarFi TM Wi-Fi Telescope Adapter

IOP-8434

Adds 802.11b/g/n Wi-Fi control to compatible iOptron mounts Enables wireless GoTo from smartphones, tablets, and computers Supports Sky Safari Pro...

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$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

iOptron USB to RS232 converter

IOP-8435
2 in stock

Connects iOptron mounts with RS232 ports to modern computers via USB Enables firmware updates for hand controllers and main boards Allows for dire...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
iOptron ZEQ25/CEM25 Counterweight Shaft Extension Bar
$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00

iOptron ZEQ25/CEM25 Counterweight Shaft Extension Bar

IOP-7126

Extends Counterweight Shaft Length Increases Balancing Leverage Allows for Heavier Telescope Payloads Compatible with iOptron ZEQ25 Mounts Compati...

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$30.00 - $30.00
$30.00
$30.00 - $30.00
$30.00
Orion Optics UK 150mm Small Dob brake (recommended)
$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76

Orion Optics UK 150mm Small Dob brake (recommended)

OOUK-150MM-SMALL-DOB-BRAKE-RECOMMENDED

Recommended for the 150mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

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$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76

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.