ATR432M

ATR432M Deep Sky Cooled Mono Camera

ATR432M features a Sony IMX432 1.1-inch mono sensor with 1600×1100 resolution and 9μm square pixels. It offers support for high frame rate mode (109FPS at all pixel readout, 12-bit) and has a readout noise level as low as 2.4e. The camera is equipped with two-stage TEC cooling system (temperature deviation within ±0.1°C), dew prevention heater, built-in 12-bit ADC, and dual conversion gain mode (HCG/LCG) for enhanced dynamic range.

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.

Product Specifications

Sensor Information

Sony IMX432 1.1-inch Mono CMOS Sensor

ATR432M features the Sony IMX432 mono sensor with 1.1-inch optical format and large 9μm pixels, ideal for high-sensitivity deep sky photography with exceptional low-light performance.

Resolution: 1600 × 1100 (1.76MP)
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

HCG/LCG

Dual Gain

Extended DR

512MB DDR3 Memory Buffer

ATR432M 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

ATR432M 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

ATR432M 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.

Performance Analysis

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

High Conversion Gain mode provides ultra-low read noise of 2.4e⁻ for deep sky imaging with excellent signal-to-noise ratio.

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

Low Conversion Gain mode offers extended dynamic range for capturing bright targets and wide-field imaging.

Spectral Response

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

Key Parameters

Sensor	Sony IMX432 Mono CMOS
Resolution	1600 × 1100 (1.76MP)
Pixel Size	9μm × 9μm
Optical Format	1.1-inch (diagonal 17.5mm)
ADC	12-bit
Read Noise	2.4 e⁻ (HCG mode)
Conversion Gain	HCG / LCG switchable
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