ATR428C Deep Sky Cooled Color Camera

ATR428C combines the Sony IMX428 global shutter color sensor, 7.04MP resolution, 4.5 μm pixels, 512MB DDR3 buffer and two-stage TEC cooling for high-speed deep-sky, solar, lunar and scientific imaging workflows.

Important: DSO cooled cameras require a stable external 11-14V power supply for the TEC cooling system and fan. Use the supplied adapter or an equivalent regulated DC power source.

Sensor IMX428 Color

Image Area 14.4 x 9.9mm

Image Resolution 3200 x 2200

ADC 12bit

QE >79%

Full Well 25ke-

DDR3 Buffer 512 MB

USB USB3.0/USB2.0

TEC Cooling -45°C

FPS 133.1fps

Max SNR 43dB

Read Noise 5.41 - 1.4 e-

Sensor Information

Sony IMX428C 1-inch Optical Format Global Shutter CMOS Sensor

ATR428C uses the Sony IMX428C back-illuminated CMOS sensor with global shutter architecture. The 4.5 μm pixels, 7.04MP resolution and 1-inch optical format imaging area provide a strong balance of field coverage, sensitivity and readout speed.

Resolution: 3200 × 2200 (7.04MP)
Pixel Size: 4.5 μm × 4.5 μm
Image Area: 14.4mm × 9.9mm
Diagonal: 17.5mm
Protect Window: IR-cut / AR window

Key Features

Color

One-Shot Capture

Efficient color imaging with global shutter timing

Global

Shutter

Full-frame exposure without rolling-shutter distortion

Clean

Calibration Frames

Zero amp-glow design helps simplify dark-frame calibration

Stable

Data Transfer

Onboard buffering keeps high-frame data flow consistent

Regulated

Thermal Control

Closed-loop TEC control supports repeatable calibration

Anti-Dew

Chamber Protection

Heated sealed chamber helps resist condensation

Fast

Readout Workflow

Suitable for high-speed imaging and analysis tasks

DSO

System Integration

Built for cooled astronomy setups with external DC power

512MB DDR3 Memory Buffer

ATR428C includes a 512MB ultra-fast DDR3 buffer to stabilize image transmission and reduce the load on the host computer during high-frame-rate capture.

Global Shutter Capture

The Sony IMX428C global shutter architecture captures the whole frame at the same instant, helping reduce rolling-shutter distortion in high-speed imaging, guiding analysis and scientific workflows.

Zero Amp-Glow

The ATR platform is carefully designed to suppress amp-glow and external light interference, producing cleaner calibration frames and more stable long-exposure imaging results.

Cooling System

Two-Stage TEC Cooling System

ATR428C uses two-stage thermoelectric cooling with a controllable fan, reaching up to 35°C below ambient for short exposure operation and up to 45°C below ambient during longer exposures.

Two-Stage TEC Cooling

The two-stage TEC cooling system reaches up to 35°C below ambient under short exposure operation and up to 45°C below ambient during longer exposures. Closed-loop temperature control keeps the sensor stable for repeatable calibration frames.

Anti-Dew Technology

The sealed sensor chamber and adjustable heating window help prevent condensation during long imaging sessions, while the external fan and thermal path move heat away from the sensor package.

Performance Analysis

Spectral Response

ATR428C spectral response is optimized for high sensitivity across common astronomy imaging wavelengths.

Key Parameters

Model	ATR428C (ATR3CMOS07100KPA)
Sensor	Sony IMX428C, global shutter CMOS
Resolution	3200 × 2200 (7.04MP)
Pixel Size	4.5 μm × 4.5 μm
Image Area	14.4mm × 9.9mm, 17.5mm diagonal
Read Noise	1.4-5.41 e-
Full Well	25ke-
Peak QE	>79%
Dynamic Range	76.4dB
Signal-to-Noise Ratio	43dB
Frame Rate	25.7 FPS full resolution; 66.5 FPS at 1600 × 1100 ROI
Exposure Range	0.1ms - 3600s
ADC	12-bit
DDR3 Buffer	512MB
Interface	USB3.0 / USB2.0, DC 12V 3A cooling power
Back Focus	17.5mm
Adapter	M42 × 0.75
Bayer / Output	RGGB
Dimensions / Weight	Φ80mm × 103mm, 0.552kg