Deep-sky astrophotography
Two-stage TEC, ΔT ≥44 °C helps control thermal noise during long exposures of galaxies, nebulae and star clusters.
Deep-sky cooled
ATR432M
ToupTek ATR432M is a cooled deep-sky camera using the IMX432 sensor, with 1.76 MP (1600 × 1100), 9 µm pixels and 128 fps. Designed for deep-sky astrophotography, narrowband nebula imaging, high-resolution galaxy and lunar imaging. Available from Precisometer for professional astronomy systems.
- Sensor
- Sony IMX432 monochrome CMOS
- Sensor Type
- Large-pixel global-shutter monochrome CMOS
- Resolution
- 1.76 MP (1600 × 1100)
- Pixel Size
- 9 µm
- Frame Rate
- 128 fps
- Interface
- USB 3.0
Application context
Why this design is used
Choose the ATR432M when your telescope and target benefit from 1.1-inch, 14.4 × 9.9 mm sensor coverage, 9 µm sampling, two-stage TEC, ΔT ≥44 °C and 380–1100 nm response.
Narrowband nebula imaging
The monochrome IMX432 sensor is suited to H-alpha, O III and S II filter workflows.
High-resolution galaxy and lunar imaging
9 µm pixels balance image scale and detail for appropriately matched telescope focal lengths.
Photometry and time-series imaging
12-bit acquisition, 74 dB dynamic range and regulated cooling support repeatable quantitative observations.
Specifications
ATR432M
31 specification rows
The ATR432M is an astronomy camera in the ATR DSO cooled series, built around a Sony IMX432 monochrome CMOS sensor, 1.76 MP (1600 × 1100) resolution, 9 µm pixels, frame rates up to 128 fps, a USB 3.0 interface. It suits deep-sky cooled where reliable imaging performance and interface compatibility matter.
Sensor & Imaging
| Model | ATR432M |
|---|---|
| Status | Current |
| Application | Deep-sky cooled |
| Sensor | Sony IMX432 monochrome CMOS |
| Sensor Type | Large-pixel global-shutter monochrome CMOS |
| Sensor Size | 1.1-inch, 14.4 × 9.9 mm |
| Resolution | 1.76 MP (1600 × 1100) |
| Pixel Size | 9 µm |
| Shutter Type | Global shutter |
Performance
| Frame Rate | 128 fps |
|---|---|
| ADC | 12-bit |
| Peak QE | >79% |
| Dynamic Range | 74 dB |
| Read Noise | 20.2–2.4 e⁻ |
| Full Well | 100 ke⁻ |
| Spectral Range | 380–1100 nm |
Interface & Thermal
| Interface | USB 3.0 |
|---|---|
| Mount | M42 / M54 astronomy adapters |
| Cooling | Two-stage TEC, ΔT ≥44 °C |
Additional Published Specifications
| Legacy Model Name | ATR3CMOS01700KMA |
|---|---|
| Sensor Diagonal | 17.5mm |
| LCG Read Noise | 2.4-20.2e- |
| Maximum SNR | 50dB |
| Frame Buffer | 512MB |
| Sensor Chamber Window | Adjustable heating window |
| Back Focal Distance | 17.5mm/12.5mm |
| Protective Window | IR/AR |
| Color Filter Array | RGGB |
| DDR3 Buffer | 512MB |
| Max Exposure | Up to 1 hour |
| Power Supply | DC 12V / 3A |
Technical media
Performance graphs and technical drawings
Official sensor-response, performance, and mechanical imagery for the ATR432M.
System integration
Integration and compatibility
Use these checks to connect ATR432M 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: M42 / M54 astronomy adapters
- 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 IMX432 monochrome CMOS · Sensor Type: Large-pixel global-shutter monochrome 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: 128 fps · Interface: USB 3.0
- 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: 74 dB · Read Noise: 20.2–2.4 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 ATR432M
What lens mount is required for the ATR432M?
Mount: M42 / M54 astronomy adapters. 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 ATR432M use?
Sensor: Sony IMX432 monochrome CMOS · Sensor Type: Large-pixel global-shutter monochrome 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 ATR432M connect to the acquisition computer?
Frame Rate: 128 fps · Interface: USB 3.0. 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 ATR432M?
Dynamic Range: 74 dB · Read Noise: 20.2–2.4 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.
Model selection
Nearby series comparison
Compare ATR432M with the closest available models in the ATR DSO cooled family.
| Selection parameter | ATR432M (current) | ATR432C | ATR533C |
|---|---|---|---|
| Sensor | Sony IMX432 monochrome CMOS | Sony IMX432 color CMOS | Sony IMX533 color CMOS |
| Resolution | 1.76 MP (1600 × 1100) | 1.76 MP (1600 × 1100) | 9 MP (3008 × 3008) |
| Sensor size | 1.1-inch, 14.4 × 9.9 mm | 1.1-inch, 14.4 × 9.9 mm | 1-inch square, 11.31 × 11.31 mm |
| Pixel size / frame rate | 9 µm | 9 µm | 3.76 µm |
Other cameras on the IMX432 sensor
The IMX432 appears in 16 models across the catalogue, differing in cooling, shutter, interface and colour filter. Compare them side by side before settling on a variant.
Related astronomy cameras
Compare the ATR432M with other ATR DSO cooled models and astronomy cameras in the range.
- ATR992MATR DSO cooled · Astronomy CamerasDeep-sky cooled
- ATR2110CATR DSO cooled · Astronomy CamerasDeep-sky cooled
- ATR2600MATR DSO cooled · Astronomy CamerasDeep-sky cooled
- ATR2600CATR DSO cooled · Astronomy CamerasDeep-sky cooled
- ATR183MATR DSO cooled · Astronomy CamerasDeep-sky cooled
- ATR183CATR DSO cooled · Astronomy CamerasDeep-sky cooled
