Introduction and Key Features
The ZWO AM5N is the latest harmonic drive equatorial mount from ZWO, building on the success of the original AM5 with added features like Wi-Fi and Bluetooth connectivity, and an upgraded load capacity. This mount is particularly appealing for astrophotographers who need portability without compromising on performance. With a load capacity of up to 20 kg (with a counterweight), it’s designed to handle a range of setups, making it versatile for various imaging needs.
Overview
- Portable yet powerful: Supports up to 20 kg with counterweight, ideal for various astrophotography setups.
- Advanced connectivity: Wi-Fi, Bluetooth, and USB options for flexible control.
- Enhanced tracking: ±10 arcseconds tracking accuracy ensures clear, sharp long exposures.
- User-friendly design: Redesigned base and internal cabling for durability and ease of use.
- Harmonic drive benefits: Lightweight with auto-brake safety feature, minimizing risks during power loss.
Build Quality and Design
Right out of the box, the AM5N impresses with its solid build quality. The classic ZWO red finish is not only stylish but also durable. ZWO has redesigned the base, removing the azimuth locking knob, which simplifies setup and alignment. The new internal cabling system prevents wear and tear from movement, enhancing the mount’s longevity. The addition of USB-B and USB-C ports gives users flexibility for connecting their devices, whether through cables, Wi-Fi, or Bluetooth.
Performance in the Field
This is where the AM5N truly shines. Its tracking accuracy, measured at ±10 arcseconds, makes it reliable for long-exposure astrophotography. This reduction from the original’s ±20 arcseconds results in sharper, clearer images with minimal star trails. The mount also boasts a slew speed of up to 6° per second, which is quick enough for efficient target acquisition and repositioning between shots.
Understanding periodic error is crucial here. Harmonic drives like the AM5N offer smooth tracking, but they do experience periodic error, albeit minimal in this model. ZWO has fine-tuned this with their improved motors, ensuring that even in unguided scenarios, the AM5N performs admirably, with any drift easily correctable in post-processing or with an autoguider.
Finally, the mount’s portability is a key advantage. Weighing just 5.5 kg, it’s easy to transport, yet it can handle heavy loads, making it a great choice for on-the-go astrophotography. Whether you’re in your backyard or traveling to a dark-sky site, the AM5N’s blend of power and portability is a significant asset.
Final Thoughts: Strengths and Limitations
The AM5N is a compelling choice for astrophotographers looking to make the switch to a direct drive mount with a high-capacity, portable mount with flexible connectivity. While harmonic drives may pose some risks during power outages, the AM5N mitigates this with an auto-brake feature to protect your equipment. Overall, the ZWO AM5N’s upgraded design, combined with its robust tracking and easy connectivity, makes it a versatile and reliable option; however, I wouldn’t necessarily be jumping to order one if I already had an AM5.
