Manufacturer: ZWO
Price: $499
Introduction
The ZWO ASI174MM-MINI is a standout camera in the world of astrophotography, specifically designed as a guiding camera with high sensitivity and precision.
For amateur astronomers and astrophotographers, the ASI174MM-MINI is a go-to choice for guiding, planetary imaging, and solar/lunar photography. With a larger sensor than many competitors, it provides excellent performance while remaining affordable for its category.
Key Features
1. High-Quality 1/1.2″ Sensor
- The Sony IMX174 monochrome sensor provides high sensitivity and a 1936 x 1216 resolution, making it ideal for capturing clear images in guiding applications.
2. Large 5.86µm Pixel Size
- Larger pixels allow for better light collection, reducing noise and improving performance, especially in low-light astrophotography conditions.
3. USB 2.0 Interface for Stable Guiding
- While USB 2.0 isn’t as fast as USB 3.0, it provides a stable and reliable data transfer rate, which is crucial for accurate guiding.
Specifications
- Sensor: Sony IMX174 Monochrome CMOS
- Sensor Size: 1/1.2″ (11.34mm x 7.13mm)
- Resolution: 1936 x 1216 (2.35 MP)
- Pixel Size: 5.86µm x 5.86µm
- Quantum Efficiency (QE): ~77% Peak
- Full Well Capacity: 32,000e-
- Read Noise: 3.5e-
- Exposure Range: 32µs – 300s
- Shutter Type: Global Shutter
- Bit Depth: 12-bit ADC
- Interface: USB 2.0
- Cooling: No (Uncooled)
- Back Focus Distance: 8.5mm
- Compatibility: 1.25″ format with CS-mount adapter
- Weight: 140g
- Power Consumption: 5V via USB
- Software Compatibility: PHD2, SharpCap, FireCapture, ASCOM
- ST4 port
The ZWO ASI174MM-MINI is a specialized guiding and planetary imaging camera tailored for astrophotographers who need precise tracking and high sensitivity in low-light conditions. The monochrome CMOS sensor (Sony IMX174) enables detailed image capture with minimal noise, making it an excellent choice for solar, lunar, and planetary imaging.
With a 1936 x 1216 resolution, this camera delivers sharp and well-defined images, allowing for greater accuracy when used in guiding setups. Its large 5.86µm pixel size enhances light collection, making it particularly effective for capturing faint celestial objects.
While the USB 2.0 interface may not offer the fastest data transfer rates, it ensures a stable and reliable connection, which is essential for guiding applications. This trade-off prioritizes smooth tracking over high-speed imaging, which is a reasonable compromise for its intended use. In my experience, once I achieved focus with the camera, the guiding with PHD2 has been flawless. I haven’t needed to readjust the focus at all in over 2 years.
The ASI174MM-MINI is also compatible with major astrophotography software, including PHD2, SharpCap, and FireCapture, ensuring easy integration into most imaging setups. It fits seamlessly into 1.25″ focusers and works well with a wide range of telescope systems.
Overall, the ASI174MM-MINI balances affordability with high performance, making it a top choice for astrophotographers looking for a guiding camera that delivers precise and reliable results.
Performance in the Field
What are the forums saying?
Astrophotographers on forums such as Cloudy Nights and Stargazers Lounge generally praise the ASI174MM-MINI for its excellent sensitivity and guiding reliability. Many users appreciate the low noise levels and sharp image quality, making it a preferred choice for planetary and lunar imaging.
Some users note the limitations of USB 2.0, as faster cameras may be better suited for real-time imaging needs. However, for guiding purposes, the stable connection outweighs the need for higher-speed data transfer.
How do users rate it?
- Guiding Accuracy: ⭐⭐⭐⭐⭐ (5/5) – Stable, precise tracking with excellent sensor sensitivity.
- Ease of Use: ⭐⭐⭐⭐ (4/5) – Simple to set up and compatible with most guiding software.
- Versatility: ⭐⭐⭐⭐ (4/5) – Primarily a guiding camera but also good for planetary and lunar imaging.
- Speed & Connectivity: ⭐⭐⭐ (3/5) – USB 2.0 limits real-time imaging capabilities.
Pros and Cons
Pros:
✔ High Sensitivity Sensor: The Sony IMX174 sensor ensures excellent light collection and image clarity.
✔ Stable Guiding Performance: Even with USB 2.0, it provides reliable tracking in astrophotography setups.
✔ Good for Multiple Applications: While primarily a guiding camera, it also performs well for lunar, solar, and planetary imaging.
✔ Ready availability at multiple vendors
Cons:
❌ USB 2.0 Data Transfer Speed: Limits frame rates compared to newer USB 3.0 cameras.
Final Verdict
The ZWO ASI174MM-MINI is a top-tier guiding camera with high sensitivity, low noise, and stable performance. Its primary strength lies in guiding and planetary imaging, where precision tracking is essential. While the USB 2.0 interface is a drawback for high-speed imaging, it does not affect its effectiveness as a guiding camera.
The balance between price, performance, and reliability makes this a great investment for astrophotographers who need accurate guiding and detailed planetary imaging. If you’re searching for a proven, high-quality guiding camera, the ASI174MM-MINI remains one of the best choices on the market.
This review blends AI-generated insights with real-world user experiences to provide a comprehensive evaluation of the ASI174MM-MINI. Whether you’re a beginner looking to enhance your astrophotography setup or a seasoned expert, this camera delivers the performance needed for deep-space exploration. 🚀✨
