Telescope autoguiding
USB 2.0 + ST4 connectivity supports guide corrections during long-exposure astrophotography.
Guide camera
GPCMOS01200KPF
ToupTek GPCMOS01200KPF is a astronomy guide camera using the IMX225 sensor, with 1.2 MP (1280 × 960), 3.75 µm pixels and 30 fps. Designed for telescope autoguiding, guide-scope and off-axis guiding, long-exposure tracking. Legacy model retained for replacement, compatibility and support enquiries.
- Sensor
- Sony IMX225 color CMOS
- Sensor Type
- STARVIS back-illuminated color CMOS
- Resolution
- 1.2 MP (1280 × 960)
- Pixel Size
- 3.75 µm
- Frame Rate
- 30 fps
- Interface
- USB 2.0 + ST4
Application context
Why this design is used
Choose the GPCMOS01200KPF when you need a compact IMX225-based guider with USB 2.0 + ST4, 3.75 µm pixels and 380–690 nm response.
Guide-scope and off-axis guiding
1.25-inch telescope nosepiece / CS-mount compatibility suits compact guide scopes and appropriately adapted off-axis guiders.
Long-exposure tracking
IMX225 sensitivity helps maintain stable star centroids for deep-sky imaging sessions.
Lunar and planetary acquisition
1.2 MP (1280 × 960) capture provides a secondary short-exposure imaging role in compact telescope systems.
Specifications
GPCMOS01200KPF
23 specification rows
The GPCMOS01200KPF is an astronomy camera in the GPCMOS guide series, built around a Sony IMX225 color CMOS sensor, 1.2 MP (1280 × 960) resolution, 3.75 µm pixels, frame rates up to 30 fps, a USB 2.0 + ST4 interface. It suits guide camera where reliable imaging performance and interface compatibility matter.
Sensor & Imaging
| Model | GPCMOS01200KPF |
|---|---|
| Status | Discontinued / legacy support |
| Application | Guide camera |
| Sensor | Sony IMX225 color CMOS |
| Sensor Type | STARVIS back-illuminated color CMOS |
| Sensor Size | 1/3-inch, 4.9 × 3.7 mm |
| Resolution | 1.2 MP (1280 × 960) |
| Pixel Size | 3.75 µm |
| Shutter Type | Rolling shutter |
Performance
| Frame Rate | 30 fps |
|---|---|
| ADC | 12-bit |
| Peak QE | >75% |
| Dynamic Range | 75.6 dB |
| Read Noise | 3.1–0.84 e⁻ |
| Full Well | 19.2 ke⁻ |
| Spectral Range | 380–690 nm |
Interface & Thermal
| Interface | USB 2.0 + ST4 |
|---|---|
| Mount | 1.25-inch telescope nosepiece / CS-mount |
| Cooling | Passive cooling |
Additional Published Specifications
| Sensor Diagonal | 6.14mm |
|---|---|
| Maximum SNR | 42.8dB |
| Protective Window | IR/AR |
| Color Filter Array | RGGB |
Technical media
Performance graphs and technical drawings
Official sensor-response, performance, and mechanical imagery for the GPCMOS01200KPF.
System integration
Integration and compatibility
Use these checks to connect GPCMOS01200KPF to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Lens and microscope interface
- Mount: 1.25-inch telescope nosepiece / CS-mount
- Use a lens image circle that covers the sensor and check flange distance before adding C/CS, F-mount or M42 adapters.
- Sensor and sampling
- Sensor: Sony IMX225 color CMOS · Sensor Type: STARVIS back-illuminated color CMOS
- Match pixel pitch to the diffraction-limited spot the optics deliver. Sampling finer than the optics resolve multiplies data volume without adding information; sampling coarser discards resolution you have paid for.
- Interface and data rate
- Frame Rate: 30 fps · Interface: USB 2.0 + ST4
- Confirm the host can sustain the interface bandwidth continuously, not in burst. A camera that outruns the write path stalls acquisition rather than dropping quietly to a lower rate.
- Cooling and noise floor
- Dynamic Range: 75.6 dB · Read Noise: 3.1–0.84 e⁻
- Judge these figures at the exposure time you will actually use. Cooling matters where dark current accumulates over seconds; read noise dominates short exposures where it never does.
Technical FAQ
Integration questions for GPCMOS01200KPF
What lens mount is required for the GPCMOS01200KPF?
Mount: 1.25-inch telescope nosepiece / CS-mount. Use a lens image circle that covers the sensor and check flange distance before adding C/CS, F-mount or M42 adapters.
What sensor and pixel pitch does the GPCMOS01200KPF use?
Sensor: Sony IMX225 color CMOS · Sensor Type: STARVIS back-illuminated color CMOS. Match pixel pitch to the diffraction-limited spot the optics deliver. Sampling finer than the optics resolve multiplies data volume without adding information; sampling coarser discards resolution you have paid for.
How does the GPCMOS01200KPF connect to the acquisition computer?
Frame Rate: 30 fps · Interface: USB 2.0 + ST4. Confirm the host can sustain the interface bandwidth continuously, not in burst. A camera that outruns the write path stalls acquisition rather than dropping quietly to a lower rate.
What is the noise performance of the GPCMOS01200KPF?
Dynamic Range: 75.6 dB · Read Noise: 3.1–0.84 e⁻. Judge these figures at the exposure time you will actually use. Cooling matters where dark current accumulates over seconds; read noise dominates short exposures where it never does.
Need help choosing?
Tell us your sensor, resolution, spectral range, frame-rate, interface, and software requirements and we will confirm the matching configuration and lead time.
Zoom lenses for the GPCMOS01200KPF
See which of our C-mount zoom lenses suit this sensor, with the field of view, µm per pixel and depth of field at each zoom setting.
Model selection
Nearby series comparison
Compare GPCMOS01200KPF with the closest available models in the GPCMOS guide family.
| Selection parameter | GPCMOS01200KPF (current) | GPCMOS02000KMA | GPCMOS02000KPA |
|---|---|---|---|
| Sensor | Sony IMX225 color CMOS | Sony IMX290 monochrome CMOS | Sony IMX290 color CMOS |
| Resolution | 1.2 MP (1280 × 960) | 2.1 MP (1920 × 1080) | 2.1 MP (1920 × 1080) |
| Sensor size | 1/3-inch, 4.9 × 3.7 mm | 1/2.8-inch, 5.57 × 3.13 mm | 1/2.8-inch, 5.57 × 3.13 mm |
| Pixel size / frame rate | 3.75 µm | 2.9 µm | 2.9 µm |
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