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Counterweights and Bars
Discover our range of counterweights and counterweight bars, essential accessories for reducing the load on your mount's drive system and ensuring reliable tracking during long exposures. From standard bore diameters (20 mm, 28 mm and 32 mm) for popular mounts (Sky-Watcher, Celestron, iOptron) to counterweight extensions for harmonic drive mounts (ZWO AM, iOptron HAE) and stainless steel counterweights for observatory installations, find the right balancing solution for your visual or photographic equipment.
Mechanical Balancing: Essential for Mount Longevity and Tracking Accuracy
Careful balancing around the right ascension and declination axes reduces the strain on the mount's motors and gears. A properly balanced payload prevents unwanted mechanical stress, reduces power consumption and allows the autoguiding system to correct tracking errors more effectively.
Choosing the Right Balancing Accessories
- Bore Diameter and Compatibility: Always check the diameter of your counterweight shaft before purchasing. Common sizes include 20 mm (Sky-Watcher EQ5/HEQ5, Celestron AVX), 28 mm (iOptron GEM/CEM) and larger diameters above 30–40 mm for heavy observatory installations (10Micron, PlaneWave).
- Counterweight Shafts and Weights for Harmonic Drive Mounts (ZWO AM, iOptron): Although these mounts can operate without counterweights when carrying lightweight optical tubes, adding a small 2–5 kg counterweight may be advisable when payloads exceed approximately 10–13 kg. This helps maintain a suitable centre of gravity and improves overall tripod stability.
- Fine-Balancing Weights for Optical Tubes and Dobsonian Telescopes: Small magnetic weights or additional rail-mounted counterweights are ideal for compensating for heavy eyepieces, filter wheels or binocular heads without having to dismantle your entire setup.
- Stainless Steel Counterweights for Permanent Installations: Manufactured from corrosion-resistant stainless steel, these weights are ideal for humid observatory environments, preventing corrosion and rust transfer onto the counterweight shaft.