ZWO ASI585MM-AIR Wireless Smart Mono Camera

3-in-1 Integration for a Cable-Free Setup

The ASI585MM-Air combines the three core components of a modern astrophotography rig—imager, guider, and computer—into one housing. This massively simplifies cable management and reduces potential failure points at the scope. With the full ASIAIR system built-in, you control imaging sessions, guiding, polar alignment, and GoTo slews directly from your phone or tablet over its integrated WiFi connection.

Sony IMX585 Sensor: 91% QE and 8.29 MP Resolution

At the heart of the ASI585MM-Air is the Sony IMX585 monochrome sensor, a 1/1.2" format chip that delivers high-resolution results without requiring a massive, perfectly corrected image circle. Its 2.9µm pixels are well-suited for resolving fine detail in galaxies and planetary nebulae on medium to long focal length telescopes. The back-illuminated structure and 91% peak QE ensure that the majority of incoming photons are converted to signal, which is critical for capturing faint H-alpha or OIII structures.

• Zero Amp Glow: An internal circuit completely eliminates amplifier glow, even on long exposures, resulting in clean, uniform background calibration.
• Low Read Noise: With a minimum read noise of just 0.7e, the sensor preserves faint signal details during narrowband imaging, separating them from the noise floor.
• 12-bit ADC: The 12-bit analog-to-digital converter provides 4,096 levels of grayscale, capturing smooth tonal gradations in bright objects like the Orion Nebula (M42) core.

On-Axis Guiding with the Integrated SC2210 Sensor

The ASI585MM-Air eliminates the need for an external off-axis guider (OAG) or a separate guidescope by placing a dedicated SC2210 guide sensor next to the main imaging chip. This on-axis design is immune to differential flexure that can plague separate guidescopes, leading to tighter, rounder stars. Focusing the guide sensor is straightforward and independent of the main camera, ensuring you can always find a sharp guide star without compromising main-sensor focus.

ASI585MM-AIR vs. ASI585MM Pro: A Fully Integrated System

The imaging performance of the ASI585MM-Air is built upon the same Sony IMX585 sensor as the standalone ZWO ASI585MM Pro. The fundamental difference is system integration. The Pro is a component requiring a separate computer, guide camera, and potentially an OAG. The AIR model is a complete, self-contained solution.

• ZWO ASI585MM Pro: Offers the same 91% QE, 0.7e read noise, and TEC cooling. It is the correct choice if you already have a guiding setup and an ASIAIR or other control computer.
• ZWO ASI585MM-Air: Adds the SC2210 guide sensor and a complete ASIAIR Plus computer to the camera body. This is the optimal choice for building a new, lightweight, and streamlined imaging rig or for simplifying an existing complex setup.

System Requirements and Connectivity

To illuminate both the 12.85mm diagonal imaging sensor and the offset guide sensor, your telescope's corrected image circle should be at least 36mm. While setups with smaller APS-C sized image circles may work, you risk vignetting or distorted stars on the guide sensor. The camera body includes multiple ports for connecting accessories like an electronic filter wheel and focuser, all controlled through the internal ASIAIR.