Atik 4120EX


The 12 megapixel sensor of the Atik 4120EX is the ideal solution for capturing stunning high resolution deep sky images. Exclusively available as a one-shot colour (OSC), this is an ideal match for Hyperstar systems and short focal length telescopes. The small 3,1 µm pixels are able to record the colour of stars and nebulae, even in the fastest imaging systems.

See all camera specifications


Product code  colour: ATK0139
RRP  2,629€ / $3,155 (excl. tax)

The Atik 4120EX’s high resolution means you can print your images to A3 and beyond, while the famed sensitivity of the Sony EXview sensor ensures those images are brimming with detail.

Features of the 4-Series

Our 4-Series is designed in such way as to combine power and control with flexibility and ease of use. The narrow body makes them ideal for use on Hyperstar and Fastar systems whilst maintaining suitability with a huge range of other telescopes and suitable for OEM applications. They feature fully regulated set-point cooling which makes for easy and consistent image calibration, though they feature such low noise that dark frames are no longer even a requirement, meaning you can spend more time imaging the things that matter. The slim, ergonomic design of these cameras naturally comes in at a low weight to help minimize stress on the corrector plate. The desiccant port is readily accessible from outside the camera for easy maintenance , and a simple 12V power requirement is complimented by low power use to help you get the most out of your imaging sessions, whether in the observatory or out in the field.


All of our 4-EX series cameras use sensors embedded with Sony EXview HAD CCD II™ technology which results in outstanding Quantum Efficiency, incredibly low read noise and excellent thermal management. These high Quantum Efficiencies make for impressive sensitivity across a vast range of wavelengths, but become particularly outstanding when imaging in narrowband, capturing stunning levels of detail in even the faintest of objects.

Technical Specification

  • Sensor Type: CCD - Sony ICX834AQG
  • Horizontal Resolution: 4241 pixels
  • Vertical Resolution: 2829 pixels
  • Pixel Size: 3.1 µm x 3.1 µm
  • ADC: 16 bit
  • Readout Noise: 5e- typical value
  • Gain Factor: 0.14e-/ ADU
  • Full Well: ~9,000 e-
  • Dark Current: ~0.0003 electrons/second at -10°
  • Interface: Mini-USB 2.0 High Speed
  • Power: 12v DC 1A
  • Maximum Exposure Length: Unlimited
  • Minimum Exposure Length: 1/1000 s
  • Cooling: Thermoelectric set point with max ΔT=-25°C
  • Weight: approx. 400 gr
  • Back focus: 13mm ±0.5
  • Exclusively available as one-shot colour

System Requirements

  • Intel i3+ or above
  • Windows 10
  • CD-ROM drive
  • USB 2.0 port

What's in the box?

  • Camera body with 1.25'' adapter
  • 3-metre USB cable
  • 1.8-metre battery power connector
  • CD-ROM with drivers, software and user's manual (PDF)
  • Quickstart guide (paper)

Our highly acclaimed Artemis Capture software is included for camera control and data acquisition, along with a full ASCOM driver. These are also available from our Downloads page.

A universal (110-230V) power adapter is optional.