When you look at the evolution of astrophotography equipment, there are these moments when the ground shifts beneath our feet. One of those moments is happening right now with strain wave, or harmonic drive, mounts. Once considered experimental or niche, they have rapidly become the standard for portability and reliability. These instruments are compact, surprisingly strong for their size, and often capable of tracking with a precision that rivals mounts many times their weight and cost. For anyone who has ever lugged a bulky equatorial setup through a dark field at midnight, that shift is not just progress, it feels like liberation.
Recently, Dylan O’Donnell shared his first experience using Sky-Watcher’s Wave 100i, a strain wave mount designed with imagers in mind. He admitted he had never touched this type of mount before and was curious how it would hold up in practice. After Sky-Watcher sent him a demo unit with the option to return it or keep it, his verdict was plain. He wanted to keep it.
In his time with the mount, he compared it to the familiar Sky-Watcher Star Adventurer GTi, noting the difference in setup, design, and overall performance. What stood out most was not just the weight savings or the sleek form factor, but how the mount held steady during real imaging sessions. It is one thing for a company to boast specifications on paper and quite another for an imager to point a telescope skyward and see consistent tracking on faint stars for hours at a time.
That is the story of these new mounts. They are redefining expectations. No longer is portability synonymous with compromise. The strain wave approach has shown that you can carry a mount under one arm and still capture the kind of long-exposure images that once required heavy counterweights and back-straining assemblies. This combination of lightweight design and high performance has made them the new baseline, the kind of tool that even seasoned astronomers are beginning to trust without hesitation.
The Sky-Watcher Wave 100i is not just one company’s offering, but part of a wider movement in mount technology. Whether you are a backyard hobbyist or chasing photons from a remote desert outpost, these mounts are proving that the old trade-off between size and performance is no longer a given. It is not exaggeration to say they may very well be the new workhorses of astrophotography.
After recently moving toward a smaller, lighter astrophotography rig, the switch to the Wave 100i made sense. The existing setup included an Apertura 75Q refractor, a Minicam 8, and an off-axis guider. The new mount replaced the Star Adventurer GTi, offering more payload capacity while still reducing the overall weight. One of the first surprises was just how light the head and tripod were, noticeably easier to handle than the GTi with counterweights. The carbon fiber tripod kept the entire system portable without feeling flimsy.
A key benefit of Sky-Watcher mounts is their ability to integrate smoothly with EQMOD, the SynScan app, and ASCOM-based software. This one connected right away, requiring only a change to the correct COM port. No driver installation or complicated setup steps were needed. Control can be handled through Wi-Fi with the SynScan app, making it possible to slew and align without touching a hand controller. For anyone already familiar with Sky-Watcher’s ecosystem, the operation will feel instantly familiar.
The mount features a simple power button with a status light, an altitude adjustment for polar alignment, and azimuth screws for east-west positioning. A built-in LED-lit spirit level makes it possible to level in the dark without extra gear. Unlike some equatorial mounts, there are no clutches to release for manual repositioning. All movement happens through the motors, so changing aim or rehoming after a power cut means driving it via the controls. If power is lost while pointed away from home position, it needs to be moved back manually through the app or hand controller before shutting down and restarting.
With a strain wave gear system, the mount stays locked into its gearing at all times. This eliminates free movement by hand but helps maintain precision during tracking. Compared to traditional worm gear designs, strain wave systems often carry more weight relative to their own size and are less prone to backlash. That makes them appealing for portable setups where every pound matters.
Under clear skies, the mount tracked smoothly through an entire night of imaging at a focal length of around 400 mm. Sub-exposures came out consistently usable without skips or guiding issues. Clouds remain a limiting factor for guiding accuracy, but when conditions were good, the tracking stayed on point. Even with a small payload, the performance left no reason to swap back to heavier gear for this imaging scale.
The combination of increased payload capacity and reduced overall weight stands out as one of the biggest advantages. A compact head paired with a carbon fiber tripod makes transport to dark sites straightforward, whether for short trips or more distant outings. This approach fits into the growing trend toward lightweight astrophotography rigs that can still handle serious imaging sessions.
One of the images taken during testing was inspired by a frame from photographer Franz Hoffman. The target region, rich in southern hemisphere dust clouds, required long exposures and stable tracking, both of which the mount handled without problems. This type of imaging highlighted the mount’s ability to support extended sessions without introducing tracking errors.
The Sky-Watcher Wave 100i proved to be easy to set up, simple to integrate with existing software, and capable of delivering accurate tracking throughout a night of imaging. Its combination of portability and load capacity makes it well suited for astrophotographers looking to downsize without losing performance. Having started the session unsure what to expect from a strain wave mount, the outcome was a clear appreciation for the design.
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