ATR294M

ATR294M Deep Sky Cooled Mono Camera

ATR294M features a Sony IMX494 4/3-inch mono sensor with 4128×2880 resolution and 4.63μm square pixels. The camera supports binning mode, equipped with two-stage TEC cooling system (temperature deviation within ±0.1°C), dew prevention heater, built-in 14-bit ADC, 15ke full well, and supports HCG/LCG dual gain modes for versatile imaging capabilities.

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.

Sensor Information

Sony IMX494 4/3-inch Mono CMOS Sensor

ATR294M features the Sony IMX494 mono sensor with 4/3-inch optical format, ideal for high-resolution narrowband imaging and deep sky photography with excellent sensitivity.

Resolution: 4128 × 2880 (11.9MP)
Pixel Size: 4.63μm × 4.63μm
Image Area: 19.1mm × 13.3mm
Diagonal: 23.1mm

Sensor Parameters

ATR294M utilizes the Sony IMX494 sensor with outstanding performance specifications for professional deep sky astrophotography.

Key Features

11.9 MP

Resolution

4128 × 2880

4.63 μm

Pixel Size

4/3-inch format

14-bit

ADC

High dynamic range

15 ke⁻

Full Well

Typical capacity

HCG/LCG

Dual Gain

Versatile modes

512 MB

DDR3 Buffer

Stable transfer

ΔT 42°C

Cooling

Below ambient

1 Hour

Max Exposure

Long exposure ready

512MB DDR3 Memory Buffer

ATR294M 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

ATR294M 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. Even in summer, it can maintain cooling temperatures from -5°C to -10°C throughout the night.

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

ATR294M 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 14-bit, Temp: -10°C, HCG)

High Conversion Gain (HCG) mode optimizes read noise for low-light deep sky imaging, ideal for narrowband and faint object photography.

Camera Parameters (Full Res, RAW 14-bit, Temp: -10°C, LCG)

Low Conversion Gain (LCG) mode provides higher full well capacity for brighter targets and shorter exposures with enhanced dynamic range.

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 IMX494 Mono CMOS
Resolution	4128 × 2880 (11.9MP)
Pixel Size	4.63μm × 4.63μm
Optical Format	4/3-inch (diagonal 23.1mm)
ADC	14-bit
Full Well	15 ke⁻
Gain Modes	HCG (High Conversion Gain) / LCG (Low Conversion Gain)
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