The ZWO ASI2600MM Pro is built around Sony’s back-illuminated ExMor IMX571 APS-C sensor. It delivers a peak quantum efficiency (QE) of up to 80%, supports a native 16-bit depth, and offers an impressive 14 stops of dynamic range with an ultra-low 1.0e readout noise.

Features

• 26MP resolution (6248x4176)

• 3.76um pixel size

• Back illuminated Sony IMX571 CMOS Sensor

• Zero amp glow

• 14 stop dynamic range

• 16 bit ADC sensor

 

Just like its colour counterpart, the ASI2600MM Pro is surprisingly lightweight at only 700 grams. The APS-C sensor measures 23.5mm x 15.7mm, giving it a diagonal of 28.3mm. Sony’s back-illuminated CMOS design enhances light sensitivity, cuts down on noise and power use, and improves data transfer speeds. Unlike traditional front-illuminated sensors—where wiring and transistors block some of the light—back-illuminated sensors place the light-sensitive area above the circuitry. This layout allows more light to reach the photodiodes, increasing quantum efficiency. Sony further boosts performance with a unique photodiode design and an on-chip lens system, improving sensitivity and reducing random noise even further.

The 16-bit analog-to-digital converter (ADC) in the ASI2600MM Pro delivers a dynamic range of 14 stops, greatly enhancing image detail, contrast, and the smoothness of tonal transitions.

ZWO equips the ASI2600MM Pro with a 256MB DDR3 memory buffer, which helps stabilise data transfer and eliminates amp glow caused by slow readouts. The USB 3.0 interface provides a high-speed 5Gbps bandwidth, enabling the camera to capture up to 3.51 frames per second at its full 26MP resolution.

A built-in USB 2.0 hub allows connection of up to two accessories—like an electronic filter wheel, guide camera, or focuser—helping you simplify your cable setup by reducing the number of leads running to your PC.

The camera also features a two-stage TEC cooling system, capable of achieving a ΔT of 35°C below ambient air temperature.
Important: All cooled ZWO cameras must be powered by an external 12V supply (3–5A) with a 2.1×5.5 mm positive-tip connector.

This astronomy camera is fitted with a 5W polyimid heater that covers the protective window. It prevents dew or ice forming on the camera, allowing you to image in colder environments.

Quantum Efficiency 

The ZWO ASI2600MM Pro has a QE value of 91%

Cooling system

The two stage TEC cooling system can lower th CMOS sensor temperature to more than 35℃ below ambient temperature. This reduces dark current generation and sesnor noise level during extended exposures. It is also equipped with unique dark current supression technology that further reduces dark current noise.  a temperature of 0 °C, the dark current noise is as low as 0.0022 electrons per second per pixel. This implies that a 300-second exposure would result in just 0.7 electrons of dark current noise, which is lower than the readout noise. Furthermore, when the temperature is lowered to -20 °C, the dark current drops even further to 0.00012 electrons per second per pixel.

 

Zero amp glow

The ZWO ASI2600MM Pro' s sensor does not produce a weak infrared light source thats seen in traditional CMOS sensors. Hence, he sensor's cirtuitry allows you to conduct high gain, long exposure imaging with no amp glow. 

Specifications

Type	Monochrome
Sensor Type	IMX571
Sensor Size	23.5x15.7mm
Pixel Size	3.76 μm
Format	APS-C (6248x4176)
Read Noise	1.0e-3.3e
Resolution	26 MP (6248x4176)
Max Framerate	12.8 FPS
Zero Amp Glow	Yes
Delta T	35°C below ambient
Memory Buffer	512MB DDR3
Shutter	Rolling Shutter
QE Peak	91%
Full Well	50,000e
Back Focus	17.5mm
ADC	16-bit
Exposure Range	32us-2000s
Protecting window	D60 2" AR Coated
USB	3.0
Adapter	M42 X 0.75
Weight	700 g

Camera Connection

Recommended Accessories

	ZWO 12V 5A Power Adapter for Cooled Cameras Used to power your compatible ZWO cooled camera or electronic device.
	ZWO Desiccant Tablets for Cooled Cameras Replace used dessicant tablets as required with the ZWO Dessicant Tablets for Cooled Cameras to keep your cooled camera functioning optimally.
	M48 T-Thread Spacer Ring Kit Add a M48-T-Thread Spacer Ring Kit to adjust backfocus spacing as required. Comes with 7 convenient sizes.
	ZWO 7 Position 2-inch Electronic Filter Wheel Add 7 of your favourite filters into an electronic filter wheel to swap between them automatically. Suitable for 2" threaded filters.

	ZWO 12V 5A Power Adapter for Cooled Cameras Used to power your compatible ZWO cooled camera or electronic device.
	ZWO Desiccant Tablets for Cooled Cameras Replace used dessicant tablets as required with the ZWO Dessicant Tablets for Cooled Cameras to keep your cooled camera functioning optimally.
	M48 T-Thread Spacer Ring Kit Add a M48-T-Thread Spacer Ring Kit to adjust backfocus spacing as required. Comes with 7 convenient sizes.
	ZWO 7 Position 2-inch Electronic Filter Wheel Add 7 of your favourite filters into an electronic filter wheel to swap between them automatically. Suitable for 2" threaded filters.

About ZWO Optical

Astrophotography has never been easier.

Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou China. They focus on building and innovating ground-breaking CMOS cameras such as the iconic ZWO ASI120MM Monochrome CMOS camera (the first-ever planetary CMOS camera to beat a CCD in the early 2010s). ZWO continues to pioneer new astrophotography technology with revolutionary features to capture exceptional quality images of space that will last you a lifetime. Today, ZWO cameras are recognised by every passionate astrophotographer and are available in over 25 countries internationally.

Product Code: ZWO-ASI2600MM-P