Deep-sky astrophotography
Two-stage TEC, ΔT ≥42 °C helps control thermal noise during long exposures of galaxies, nebulae and star clusters.
Deep-sky cooled
ATR294C
ToupTek ATR294C is a cooled deep-sky camera using the IMX294 sensor, with 11.6 MP (4128 × 2808), 4.63 µm pixels and 33 fps. Designed for deep-sky astrophotography, one-shot colour deep-sky imaging, high-resolution galaxy and lunar imaging. Available from Precisometer for professional astronomy systems in the Benelux.
- Sensor
- Sony IMX294 color CMOS
- Sensor Type
- Back-illuminated 4/3-inch color CMOS
- Resolution
- 11.6 MP (4128 × 2808)
- Pixel Size
- 4.63 µm
- Frame Rate
- 33 fps
- Interface
- USB 3.0
Applications & selection
ATR294C applications
One-shot colour deep-sky imaging
The colour IMX294 sensor captures broadband targets without a separate LRGB filter sequence.
High-resolution galaxy and lunar imaging
4.63 µm pixels balance image scale and detail for appropriately matched telescope focal lengths.
Photometry and time-series imaging
14-bit acquisition, 84.4 dB dynamic range and regulated cooling support repeatable quantitative observations.
When to choose this camera
Choose the ATR294C when your telescope and target benefit from 4/3-inch, 19.11 × 13.0 mm sensor coverage, 4.63 µm sampling, two-stage TEC, ΔT ≥42 °C and 380–690 nm response.
Specifications
ATR294C
32 specification rows
The ATR294C is an astronomy camera in the ATR DSO cooled series, built around a Sony IMX294 color CMOS sensor, 11.6 MP (4128 × 2808) resolution, 4.63 µm pixels, frame rates up to 33 fps, a USB 3.0 interface. It suits deep-sky cooled where reliable imaging performance and interface compatibility matter.
Sensor & Imaging
| Model | ATR294C |
|---|---|
| Status | Current |
| Application | Deep-sky cooled |
| Sensor | Sony IMX294 color CMOS |
| Sensor Type | Back-illuminated 4/3-inch color CMOS |
| Sensor Size | 4/3-inch, 19.11 × 13.0 mm |
| Resolution | 11.6 MP (4128 × 2808) |
| Pixel Size | 4.63 µm |
| Shutter Type | Rolling shutter |
Performance
| Frame Rate | 33 fps |
|---|---|
| ADC | 14-bit |
| Peak QE | >80% |
| Dynamic Range | 84.4 dB |
| Read Noise | 4.1–0.87 e⁻ |
| Full Well | 64 ke⁻ |
| Spectral Range | 380–690 nm |
Interface & Thermal
| Interface | USB 3.0 |
|---|---|
| Mount | M42 / M54 astronomy adapters |
| Cooling | Two-stage TEC, ΔT ≥42 °C |
Additional Published Specifications
| Legacy Model Name | ATR3CMOS10300KPA |
|---|---|
| Sensor Diagonal | 23.1mm |
| LCG Read Noise | 4.1-3.38 e- |
| Maximum SNR | 48dB |
| Frame Buffer | 512MB |
| Sensor Chamber Window | Adjustable heating window |
| Back Focal Distance | 17.5mm/12.5mm |
| Protective Window | IR/AR |
| Color Filter Array | RGGB |
| Gain Modes | HCG (High Conversion Gain) / LCG (Low Conversion Gain) |
| 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 ATR294C.
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.
Other cameras on the IMX294 sensor
The IMX294 appears in 9 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 ATR294C 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
