G3M C+1.25" Mount USB3.0 CMOS Guiding Astronomy Camera
The G3M C+1.25" Mount USB3.0 CMOS Guiding Astronomy Camera is a compact, high-performance imaging device designed for astrophotography and telescope guiding.
Product Overview
The G3M C+1.25" Mount USB3.0 CMOS Guiding Astronomy Camera is a compact, high-performance imaging device designed for astrophotography and telescope guiding. It features a standard 1.25" outer interface to fit telescope eyepiece ports and a C-mount inner interface for industrial lenses. The camera uses a CMOS sensor with USB3.0 data transfer and includes a built-in ST4 auto guider port for direct connection to guiding systems. It supports a wide spectral range and low amp glow for clean imaging of celestial objects.
- SensorSony IMX series CMOS
- Sensor Size1/1.8" (7.37x4.91mm), 1/2.8" (5.60x3.10mm), 1/3" (4.80x3.60mm), 1/2" (7.20x4.05mm), 1/2.9" (4.97x3.73mm)
- Pixel Size2.4x2.4μm, 2.9x2.9μm, 3.75x3.75μm, 6.9x6.9μm
- Resolution6.3M, 2.0M, 1.2M, 0.4M
- Frame Rate59@3040x2048, 58@1520x1024, 126@1920x1080, 150@1280x960, 520@720x540
- Binning1x1, 2x2
Key Benefits
- 1.25" outer interface fits standard telescope eyepiece ports for direct mounting
- C-mount inner interface allows use with standard industrial lenses
- Built-in ST4 auto guider port enables direct connection to guiding systems
- USB3.0 interface provides fast data transfer and power over a single cable
- Low amp glow and high sensitivity improve image quality for deep-sky and planetary imaging
- Supports multiple frame rates and resolutions with 1x1 and 2x2 binning options
- Native, ASCOM, and WDM drivers ensure compatibility with third-party astrophotography software
Application Scenarios
- Guiding a telescope during long-exposure astrophotography of galaxies and nebulae
- Capturing planetary details during high-magnification imaging sessions
- Solar and lunar imaging with precise tracking using the ST4 port
- Compact setup for portable astronomy field use with minimal power and space needs
- Integration into automated imaging workflows using API or software control
Who It Is For
- Amateur and educational astronomy dealers setting up imaging stations
- Astrophotographers using telescopes with 1.25" eyepiece ports
- Educational institutions teaching observational astronomy and imaging
- Research labs conducting low-light imaging with compact camera systems
- Field astronomers needing lightweight, low-power imaging solutions
Problems It Solves
- A standard telescope eyepiece port cannot directly accept a digital camera without an adapter
- Separate guiding systems require multiple cables and devices, increasing setup complexity
- Low-sensitivity cameras produce noisy images under low-light conditions
- Lack of ST4 port forces users to use external guiding hardware or software-only solutions
- Incompatible drivers or interfaces prevent integration with common astrophotography software
Technical Features
- CMOS sensor with ultra-high performance for low-light imaging
- USB3.0 interface for high-speed data transfer and single-cable power delivery
- Built-in ST4 auto guider port for direct connection to guiding systems
- 1.25" outer interface for direct fit to telescope eyepiece ports
- C-mount inner interface for use with standard industrial lenses
- Supports 1x1 and 2x2 binning to adjust frame rate and sensitivity
- Native, ASCOM, and WDM drivers for compatibility with third-party software
- Low amp glow design reduces background noise in long-exposure imaging
- Spectral range from 380-650nm (with IR-cut filter) or 350-1050nm (with AR coating)
- Operating temperature range from -10°C to 50°C
Specifications
| Sensor | Sony IMX series CMOS |
|---|---|
| Sensor Size | 1/1.8" (7.37x4.91mm), 1/2.8" (5.60x3.10mm), 1/3" (4.80x3.60mm), 1/2" (7.20x4.05mm), 1/2.9" (4.97x3.73mm) |
| Pixel Size | 2.4x2.4μm, 2.9x2.9μm, 3.75x3.75μm, 6.9x6.9μm |
| Resolution | 6.3M, 2.0M, 1.2M, 0.4M |
| Frame Rate | 59@3040x2048, 58@1520x1024, 126@1920x1080, 150@1280x960, 520@720x540 |
| Binning | 1x1, 2x2 |
| Exposure Time | 0.244ms~1000s |
| Dark Signal | 0.15mv with 1/30s |
| Sensitivity | 425mv to 7469mv with 1/30s |
| Data Interface | USB3.0 |
| Guiding Port | ST4-port |
| Power Supply | USB3.0 |
| Operating Temperature | 10 degC to 50 degC |
| Spectral Range | 380-650nm (IR-cut filter), 350-1050nm (AR coating) |
Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.
Customization Options
- Choose between IMX178, IMX290, IMX224, IMX385, or IMX287 sensor models
- Select C-mount or M42 thread for lens compatibility
- Order with or without IR-cut filter based on imaging needs
- Request custom firmware or driver support for specific software
- Select sensor variant with higher sensitivity (e.g., IMX287(M)) for low-light use
Comparison With Other Options
| G3M C+1.25" Mount USB3.0 CMOS Camera without ST4 port | Same sensor, interface, and resolution, but the ST4 port version allows direct connection to guiding systems without external hardware. |
|---|---|
| G3M C+1.25" Mount USB2.0 CMOS Camera | USB3.0 version offers faster frame rates and higher data throughput, critical for real-time guiding and high-resolution capture. |
| C-mount only CMOS camera | The 1.25" outer interface allows direct fit to telescope eyepiece ports; a C-mount-only camera requires an adapter for telescope use. |
Use Guide
- Mount the camera into the telescope's 1.25" eyepiece port using the standard outer interface
- Connect the ST4 port to the telescope's guiding system using a compatible cable
- Use a USB3.0 port for maximum data transfer speed and power delivery
- Select the correct driver (Native, ASCOM, or WDM) based on your astrophotography software
- Adjust binning settings to balance frame rate and resolution for your target object
- Use the 1x1 binning for maximum resolution or 2x2 for higher frame rate during guiding
Guides and Applications
Frequently Asked Questions
What is the outer interface size of this camera?
The outer interface is standard 1.25" to fit telescope eyepiece ports.
Can I use this camera with a standard industrial lens?
Yes. The inner interface is C-mount, so it accepts standard C-mount lenses.
Does the camera require an external power supply?
No. The camera draws power from the USB3.0 connection.
What is the purpose of the ST4 port?
The ST4 port allows direct connection to an auto guider system for real-time tracking during long-exposure imaging.
Which sensors are available in this model series?
Available sensors include IMX178, IMX290, IMX224, IMX385, and IMX287 with different sensitivity and resolution levels.
Is this camera compatible with Windows 10?
The source specifies support for Native, ASCOM, and WDM drivers. Confirm current driver compatibility with the supplier before ordering.
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