ToupTek GPM174M Guide Camera

The GPM174M is a professional monochrome camera ideal for planetary, solar, and lunar astrophotography. Equipped with the Sony IMX249 sensor, it offers high sensitivity, low read noise, and a wide dynamic range , ensuring sharp, detailed images even in low-light conditions.

Highlighted Features

• Sony IMX249 Mono CMOS Sensor (1/1.2”)
• Resolution: 1920 × 1200 (2.3 MP)
• Pixel size: 5.86 µm (square)
• Shutter Global: prevents motion blur
• High light sensitivity: 825 mV @ 1/30s
• Ultra-low read noise: 6.48 – 3.96 e⁻
• Dynamic range: up to 72 dB
• Frame rate: up to 16.2 FPS in 8-bit

Sony IMX249 Sensitivity

The sensitivity G of the GPM174M sensor is 825 mV with an accuracy of 1/30 s. Its spectral sensitivity is shown in Figure 1. The sensitivity is measured using an excitation LED light source with a color temperature of 3200 K. A CM500 IR-cut filter (t = 1.0 mm) is placed between the LED light source and the receiving surface of the sensor to irradiate light almost parallel.

Technical Intelligence

• 12-bit ADC with real output in 12 and 8 bits
• Digital binning (1x1 to 8x8) with stacking or averaging modes
• Adjustable ROI: Higher speed with smaller resolutions
• Internal image buffer: reduces glow effect and improves stability

Compatibility and Connections

• USB 2.0 Type C interface
• 1.25” mount for telescopes / C-mount for industrial lenses
• Compatible with: Windows, macOS, Linux and Android
• Professional SDK: C/C++, Python, Java, .NET and more

Package includes:

• GPM174M camera (with C-mount)
• USB 3.0 cable (2 m)
• 1.25” adapter for telescope
• ST4 guide cable (2 m)
• CS-mount adapter ring
• Manual and presentation case

Ideal applications:

• Astrophotography (lunar, solar, planetary)
• Scientific observation of spectra
• Precision industrial imaging
• Video recording in low-light environments

Quick Specs:

Professional power in the palm of your hand

With its rugged alloy body , passive cooling, and full compatibility with industrial telescopes and lenses, the GPM174M is a camera designed for those seeking precision, durability, and stunning results.