ATR585M

ATR585M Research-Grade Deep Sky Cooled Mono Camera

ATR585M features a Sony IMX585 back-illuminated mono sensor with 3840×2160 resolution and 2.9μm square pixels. The camera is designed specifically for astrophotography with ultra-low readout noise (0.50e⁻), zero amp-glow, two-stage TEC cooling system (up to 45°C below ambient), 512MB DDR3 buffer, built-in 12-bit ADC, 38.9ke full well, and supports high frame rate mode (24 fps@12-bit / 47 fps@8-bit RAW).

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 IMX585 1/1.2-inch Back-Illuminated Mono CMOS Sensor

ATR585M features the Sony IMX585 back-illuminated mono sensor with 1/1.2-inch optical format, ideal for high-sensitivity deep sky photography with exceptional quantum efficiency and ultra-low noise.

Resolution: 3840 × 2160 (8.3MP)
Pixel Size: 2.9μm × 2.9μm
Image Area: 11.2mm × 6.3mm
Diagonal: 12.85mm

Key Features

8.3 MP

Resolution

3840 × 2160

2.9 μm

Pixel Size

1/1.2-inch format

12-bit

ADC

16-bit HDR mode

38.9 ke⁻

Full Well

LCG mode

24 FPS

Frame Rate

12-bit RAW

512 MB

DDR3 Buffer

Stable transfer

ΔT 45°C

Cooling

Long exposure

0.50 e⁻

Read Noise

Ultra-low HCG

Spectral Response - QE Curve

The Sony IMX585 sensor features exceptional quantum efficiency above 91% peak, with excellent response across the visible and near-infrared spectrum, making it ideal for narrowband and broadband deep sky imaging.

512MB DDR3 Memory Buffer

ATR585M camera has a 512MB (4Gb) ultra-fast DDR3 memory buffer to ensure stable image transmission, easing the burden on your computer's transmission system and effectively reducing amp-glow.

Zero Amp-Glow Technology

ATR585M has been carefully designed and is able to achieve zero amp-glow photo shooting. The comparison below shows different cameras at 20°C with 5-minute exposure time. ATR585M demonstrates zero amp-glow performance.

With Amp-glow

ATR585M: Zero Amp-glow

Cooling System

Two-Stage TEC Cooling System

ATR585M features a two-stage Thermoelectric Cooling (TEC) with controllable fan, allowing the sensor to operate at temperatures up to 45°C below ambient under long exposure. The exposure time can be set for up to 1 hour, ensuring every detail is captured with minimal dark current.

Efficient Cooling Design

The integrated heat dissipation structure and efficient cooling module ensure stable operation. The PID algorithm allows TEC to be precisely regulated towards the target temperature with ±0.1°C deviation, maintaining stable cooling throughout the night.

Anti-Dew Technology

ATR585M 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

HCG Mode Performance (Full Resolution, RAW 12-bit, Temp: -10°C)

High Conversion Gain (HCG) Mode: Optimized for ultra-low read noise (0.50e⁻ to 0.79e⁻), ideal for deep sky long exposure imaging where read noise is critical.

LCG Mode Performance (Full Resolution, RAW 12-bit, Temp: -10°C)

Low Conversion Gain (LCG) Mode: Optimized for higher full well capacity (38.9ke⁻), providing wider dynamic range for bright objects and shorter exposures.

HDR Mode Performance (Full Resolution, RAW 16-bit, Temp: -10°C)

HDR Mode: Combines HCG and LCG for extended dynamic range (88.6 dB), perfect for capturing both faint nebulae and bright stars in a single image.

Key Technical Specifications

Sensor	Sony IMX585 Back-Illuminated Mono CMOS
Resolution	3840 × 2160 (8.3MP)
Pixel Size	2.9μm × 2.9μm
Optical Format	1/1.2-inch (diagonal 12.85mm)
ADC	12-bit (16-bit @ HDR)
Full Well	38.9 ke⁻ (LCG mode)
Read Noise	0.50e⁻ to 3.04e⁻
QE Peak	>91%
Frame Rate	24 fps @ 12-bit / 47 fps @ 8-bit (USB 3.0)
DDR3 Buffer	512MB (4Gb)
Cooling	Two-stage TEC, up to 45°C below ambient (long exposure)
Max Exposure	Up to 3600 seconds (1 hour)
Power Supply	DC 12V / 3.3A
Interface	USB 3.0 / USB 2.0
Shutter Type	Rolling shutter
Protection Window	AR-window (mono)

Dimensions & Interfaces

Camera Dimensions and Mount

Diameter: Φ80mm
Height: 107.1mm
Weight: 0.577kg
Mount: M42F × 0.75mm
Back Focal Distance: 17.5mm

Camera Outline and Interface

1: Protective window (AR window for mono)
2: M42F × 0.75 thread
3: Thermal outlet/radiator
4: LED indicators (Power, System, TEC, Fan)
5: DC 12V 3A power port (5.5 × 2.1mm)
6: Air inlet
7: USB 3.0/USB 2.0 port
8: USB 2.0 HUB

Mechanical Connection with Adapter

ATR585M can be connected to a telescope with proper adapter (M42M-1.25" or M42M-2") or camera lens (Nikon F-M42 or EOS EF-M42 adapter). The female flange to sensor is 17.5mm.

Connection with Camera Lens

Electric Connection with Accessories

Important: ATR585M requires external DC 12V/3A power supply. USB 3.0/2.0 is used only for data communication. The USB-HUB allows connection with other devices (filter wheel, guiding camera, etc.).

Package Contents

Standard package includes:

ATR585M camera body (M42×0.75 Mount + 2" adapter)

Power adapter: AC 100-240V input, DC 12V 3.3A output

Power cable

USB 3.0 cable (1.5m, A male to B male, gold-plated connectors)

M48-M42 extender 0mm

M42M-M42F extender 21mm

M48F-M42M extender 16.5mm

M42M adapter 12.5mm

Camera front cap

3-A safety equipment case (L:28cm W:23cm H:15cm)

Back Focal Distance Reference (Mono Version)

ATR585M Research-Grade Deep Sky Cooled Mono Camera

Sensor Information

Sony IMX585 1/1.2-inch Back-Illuminated Mono CMOS Sensor