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The ASI 2600 MM Pro is one of the latest offerings from ZWO, which was hailed as one of the most important astrophotography products of 2021 already at the pre-sale stage.
At the heart of this camera is a monochrome CMOS sensor developed by Sony, similar to the one used in the color version of the ASI 2600 MM Pro. These sensors differ only in the absence of the Bayer grid characteristic of color cameras. The IMX571 sensor is characterized primarily by very low noise, measuring just 0.0024 e/s/px at 0°C. This means that over a 300-second exposure, the total noise is less than 1e, making it practically negligible.
The photosensitive element developed by the Japanese team utilizes backlight technology, making it significantly more sensitive than traditional sensors, which use metal electrodes and transistor elements between the light source and the photodiode surface. In the case of the Sony IMX571 sensor, these elements do not obscure the active surface, which, combined with the absence of a Bayer grid, allows for a maximum peak quantum efficiency of 91%.
Another benefit of using a back-illuminated light-sensitive element is the elimination of the amp-glow effect. This phenomenon, which causes the image to become brighter during long exposures, has long plagued astrophotographers. The ASI 2600 MM Pro camera is another model in ZWO's lineup that is free from this problem.
A 16-bit analog-to-digital converter is responsible for signal processing while maintaining the highest tonal range and maximum dynamic range.
This product also features an extremely sophisticated temperature control system. A two-stage Peltier module maintains a low temperature of the CMOS sensor, ensuring almost immeasurable noise, while a special heater surrounding the protective glass eliminates the risk of condensation. • monochrome Sony IMX571 matrix of APS-C format with a resolution of 26 MPix
• 16-bit ADC converter guaranteeing high dynamic range of the image
• 512 MB DDR3 memory acting as a buffer ensuring stable data transmission
• efficient and energy-saving, two-stage cooling system based on the Peltier module
• built-in heater to prevent condensation of water vapor
• ZWO D60-2 AR protective glass with high transmittance preventing dust from settling on the matrix • matrix: Sony IMX571 (monochrome)
• matrix type: CMOS with backlight
• matrix size: 23.5 x 15.7 mm (APS-C format), diagonal 28.3 mm
• matrix resolution: 26 MPix, 6248 x 4176 px
• single pixel size: 3.76 µm
• capacity of the potential well: 50 ke
• read noise: < 1 - 3.3 e
• peak quantum efficiency: 91%
• exposure time: 32 µs - 2000 s
• ROI (Region of Interest Selection): yes
• shutter type: rolling shutter, electronic
• back focus: 17.5 mm
• matrix protection glass: D60-2 AR, transmission > 95% @ 400 - 700 nm, > 75% @ 400 - 1000 nm
• thickness of the protective glass matrix: 2 mm
• buffer size: 512 MB DDR3
• ADC: 16 bit
• compatible operating systems: Windows, Mac OS, Linux
• ports: 1x USB 3.0 (in), 2x USB 2.0 (out), power socket 12 V, 3 A
• cooling system: 2-stage, Peltier cells, ΔT 35°C, maximum power consumption 12 V, 3 A
• built-in heater: yes, polyamide, 5 W
• minimum permissible operating temperature: -5°C
• maximum permissible operating temperature: 50°C
• connector: M42x0.75
• dimensions: 97 x 90 mm
• weight: 700 g 16-bit ADC
• 3.51 fps @ 6248 x 4176
• 4.75 fps @ 4096 x 3072
• 6.71 fps @ 4096 x 2160
• 6.71 fps @ 3840 x 2160
• 13.13 fps @ 1920x1080
• 19.29 fps @ 1280x720
• 28.06 fps @ 640x480
• 51.44 fps @ 320x240
More resolution options are available through the software. • ZWO ASI 2600 MM Pro camera
• camera cover
• M48-M42 adapter
• documentation
• USB 3.0 cable (2 m)
• 2 x USB 2.0 cable (0.5 m)
• spacer M42 - M42 21 mm
• distance M42 - M48 16.5 mm
• end caps
• Allen key 24 months
User photo • Object : Area around the Sadr star
• Setup : optics: TS Hypergraph 6 150 mm F/2.8, mounting: Losmandy GM8; filter: Antlia Ha 3 nm 2", Antlia OIII 3 nm 2", sensor: ZWO ASI 2600 MM-P
• Execution : BiColor HOO, with Bortle 8 ( Warsaw, balcony , total 28.5 hours of acquisition)
• Author : Roman Dróżdż
Published with the author's consent
(click to see full size photo)
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