ATR432C

ATR432C Deep Sky Cooled Color Camera

ATR432C features a Sony IMX432 1.1-inch sensor with 1600×1100 resolution and 9μm square pixels. The camera supports high frame rate mode (109 FPS at all pixel readout, 12-bit), with a readout noise level as low as 2.4e. Equipped with two-stage TEC cooling system (temperature deviation within ±0.1°C), dew prevention heater, built-in 12-bit ADC, and 512MB DDR3 buffer for stable image transmission.

Important: All DSO Cooled Cameras need to be connected to an external 11-14V power supply. We recommend using the included power adapter or a lithium-ion battery with stable output of 11-14V.

Camera Parameters

Sensor Information

Sony IMX432 1.1-inch CMOS Sensor

ATR432C features the Sony IMX432 with 1.1-inch square optical format, delivering exceptional image quality with large pixels for deep sky photography.

Resolution: 1600 × 1100
Pixel Size: 9μm × 9μm
Image Area: 14.4mm × 9.9mm
Diagonal: 17.5mm

Key Features

1.76 MP

Resolution

1600 × 1100

9 μm

Pixel Size

1.1-inch format

12-bit

ADC

High dynamic range

2.4 e⁻

Read Noise

Ultra-low noise

109 FPS

Frame Rate

12-bit RAW

512 MB

DDR3 Buffer

Stable transfer

ΔT 42°C

Cooling

Below ambient

1 Hour

Max Exposure

Long exposure ready

512MB DDR3 Memory Buffer

ATR432C camera has a 512MB (4Gb) ultra-fast memory buffer to ensure stable image transmission, easing the burden on your computer's transmission system.

Cooling System

Two-Stage TEC Cooling System

ATR432C features a two-stage Thermoelectric Cooling (TEC) with controllable fan, allowing the sensor to operate at temperatures up to 42°C below ambient. The exposure time can be set for up to 1 hour, ensuring every detail is captured.

Efficient Cooling Design

The integrated heat dissipation structure and efficient cooling module ensure stable operation even in summer, maintaining cooling temperatures of -5°C to -10°C throughout the night. Temperature deviation is controlled within ±0.1°C.

Anti-Dew Technology

ATR432C adopts advanced anti-dew technology with a heating function consuming about 5 watts (can be turned off via software). The dew heater at the protection window has 4 adjustable levels, allowing users to optimize for their conditions.

Performance Analysis

Camera Parameters (Full Res, RAW 12-bit, Temp: -10°C, HCG)

High Conversion Gain (HCG) mode offers ultra-low readout noise for optimal performance in deep sky imaging.

Camera Parameters (Full Res, RAW 12-bit, Temp: -10°C, LCG)

Low Conversion Gain (LCG) mode provides higher full well capacity for brighter subjects.

Spectral Response

The quantum efficiency curve shows the sensor's response across the visible spectrum, optimized for deep sky imaging.

Key Parameters

Sensor	Sony IMX432 Color CMOS
Resolution	1600 × 1100 (1.76MP)
Pixel Size	9μm × 9μm
Optical Format	1.1-inch (diagonal 17.5mm)
ADC	12-bit
Read Noise	As low as 2.4e⁻
Frame Rate	109 fps @ 12-bit full resolution
DDR3 Buffer	512MB
Cooling	Two-stage TEC, up to 42°C below ambient
Max Exposure	Up to 1 hour
Power Supply	DC 12V / 3A
Interface	USB 3.0 / USB 2.0