ZWO ASI2600MM Pro V2 Cooled Mono Camera
- 26.1 Megapixel APS-C Sony IMX571 Mono Sensor
- 3.76µm Pixel Size
- 91% Peak Quantum Efficiency
- Zero Amplifier Glow Circuitry
- 512MB DDR3 Image Buffer
The ZWO ASI2600MM Pro V2 sets the standard for deep-sky imaging with its back-illuminated 26.1 MP Sony IMX571 APS-C sensor, delivering 91% peak quantum efficiency for maximum light gathering. Its 3.76µm pixels resolve fine detail in distant galaxies, while the native 16-bit ADC and 73ke full well capacity capture immense dynamic range in a single frame. The integrated 512MB DDR3 buffer ensures stable data transfer at up to 12.8 FPS over USB 3.0, and a two-stage TEC cooler drops sensor temperature to -35°C below ambient, virtually eliminating thermal noise.
The core of the ASI2600MM Pro is its monochrome Sony IMX571 sensor, which combines a large 28.3 mm diagonal with 26.1 megapixels of resolution. This back-illuminated (BSI) design places the sensor wiring behind the photodiodes, maximizing photon collection to achieve a peak QE of 91%. For you, this means shorter total integration times to reveal faint structures like the outer dust lanes of the Andromeda Galaxy (M31) or faint H-alpha jets in nebulae.
True 16-bit analog-to-digital conversion gives you 65,536 distinct tonal values, a massive leap from 12-bit or 14-bit cameras. Paired with a deep 73,000 electron full well capacity, the ASI2600MM Pro V2 captures smooth gradients and avoids saturating bright stars in dense fields like the Hercules Cluster (M13). This high dynamic range allows you to preserve detail in both the brilliant core and the faint outer tendrils of the Orion Nebula (M42) within the same sub-exposure.
ZWO's hardware-level circuitry completely eliminates amplifier glow, a common artifact that brightens corners of long exposures. This means your calibration workflow is simpler, requiring only darks, biases, and flats without the need for complex dark-flat subtraction. The two-stage TEC cooler aggressively reduces thermal noise by dropping the sensor temperature to as low as -35°C below ambient, ensuring your long-exposure images are clean and dominated by signal, not noise.
The V2 revision of the ASI2600MM Pro focuses on a critical electronic upgrade: data throughput. While both cameras share the exceptional Sony IMX571 sensor, the V2 achieves a maximum full-resolution frame rate of 12.8 FPS, a more than 3.6x increase over the original model's 3.51 FPS. This boost, enabled by refined internal electronics, makes the V2 significantly more capable for high-speed applications like lunar or solar mosaics, while also speeding up focus and framing routines for deep-sky imaging.
To handle the massive 26.1 MP files without issue, the ASI2600MM Pro V2 includes a 512MB DDR3 memory buffer. This buffer acts as a temporary storage space, preventing dropped frames or data corruption that can occur from USB port bandwidth limitations, especially when running other accessories. The camera connects via a USB 3.0 interface for the fastest possible transfer speeds and requires a stable 12V @ 3A power supply to run the sensor, cooling, and anti-dew heater.
A monochrome sensor, like the one in the ASI2600MM Pro V2, is significantly more sensitive to light than a color sensor because it doesn't have a Bayer filter matrix blocking photons. This results in higher resolution and the ability to capture fainter detail. It also gives you complete control over color data by shooting through separate LRGB or narrowband filters, which is the standard for advanced astrophotography.
Amplifier glow is a source of noise caused by heat from the sensor's electronics, which typically shows up as a brightening in the corners of an image. The Zero Amp Glow technology in the ASI2600MM Pro V2 is a hardware-level solution that prevents this glow from ever being recorded. This makes image calibration much easier because your dark frames will perfectly subtract thermal noise without needing to deal with the non-uniform glow, resulting in cleaner final images.
The ASI2600MM Pro V2 requires an external 12V @ 3A power supply with a 5.5x2.1mm center-positive plug. This power is necessary to run the TEC cooling system, the anti-dew heater, and the camera's internal electronics. The camera cannot be powered by the USB 3.0 port alone.
No, an electronic rolling shutter is perfectly suited for deep-sky astrophotography. The potential for distortion from a rolling shutter only occurs with very fast-moving objects relative to the exposure time. Since deep-sky objects are effectively stationary and exposures are seconds or minutes long, a rolling shutter produces no negative effects and is standard for modern, low-noise CMOS sensors.
An 80mm f/6 refractor has a focal length of 480mm. With the ASI2600MM Pro V2's 3.76µm pixels, this combination yields an image scale of 1.61 arcseconds per pixel. This is an excellent sampling rate for average seeing conditions (2-4 arcseconds), allowing you to capture sharp, well-defined details across the full expanse of large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000).
While the ASI2600MM Pro V2 is primarily a deep-sky camera, it is capable of planetary imaging. Its large sensor is not ideal, but you can use its Region of Interest (ROI) feature to select a small portion of the sensor centered on the planet. This dramatically increases the frame rate beyond the full-frame 12.8 FPS, allowing you to capture thousands of frames quickly for lucky imaging. For optimal planetary work, however, a dedicated planetary camera with smaller pixels is usually recommended.
| Sensor | APS-C Sony IMX571 BSI CMOS |
| Resolution | 6248 x 4176 (26.1 MP) |
| Pixel Size | 3.76µm |
| Sensor Dimensions | 23.5mm x 15.7mm (28.3mm Diagonal) |
| Quantum Efficiency (Peak) | 91% |
| Bit Depth | 16-bit |
| Full Well Capacity | 73ke |
| Read Noise | 1.0e - 3.3e |
| Cooling | Two-Stage TEC, -35°C below ambient |
| Amp Glow Control | Zero Amplifier Glow |
| Shutter Type | Electronic Rolling Shutter |
| Maximum Frame Rate | 12.8 FPS at full resolution |
| Exposure Range | 32μs - 2000s |
| Image Buffer | 512MB DDR3 |
| Anti-Dew Heater | Yes |
| Back Focus | 17.5mm |
| Data Interface | USB 3.0 / USB 2.0 |
| Telescope Connection | M42x0.75 |
| Camera Body Diameter | 90 mm |
| Power Requirement | 12V @ 3A |
| Operating Temperature | -5°C to 50°C |
| Storage Temperature | -10°C to 60°C |
| Operating Humidity | 0% to 80% |
| OS Compatibility | Windows, Linux, Mac OSX |
| Camera Series | ZWO ASI2600 Pro |
ASI2600MM Pro Camera Body (2025)
× 1
Soft Padded Camera Bag
× 1
USB 3.0 Cable (6.5 ft)
× 1
USB 2.0 Cables (1.6 ft)
× 2
T2-M48 Extender (16.5 mm)
× 1
T2 Extender (21 mm)
× 1
M42-M48 Adapter Ring
× 1
Lens Cover
× 1
Hex Wrench
× 1
Quick Start Guide
× 1