1
Check clearance
The camera body is 62 mm across. A 1/4-inch socket provides a tripod mounting point.
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ZWO
ZWO ASI 662MM Mono Camera
$479.00
Fast monochrome capture for the planets and Moon
The ZWO ASI662MM is the monochrome camera in the ASI662 series. Record in greyscale or add a filter to isolate the wavelengths you want to capture.
107.6 fpsMaximum at full resolution
Capture more frames in a short video
Use USB 3.0 and 10-bit high-speed RAW8 to reach the maximum at 1920 × 1080.
2.9 µmPixel size
Small pixels for close-up imaging
The Sony IMX662 monochrome CMOS sensor uses 2.9 µm pixels to sample fine detail in a magnified image.
1/2.8″Sensor format
Frame a planet or a patch of the Moon
The active area is 5.568 × 3.132 mm. The compact frame is suited to small targets and close-up lunar views.
A closer look at the camera
Front and side views of the ASI662 series housing.
How the monochrome sensor handles light
Full well and read noise
A 38.2 ke⁻ full well gives bright areas room before saturation. High conversion gain engages at a gain setting of 200 to reduce read noise. The camera has zero amp glow at the hardware level.
Sensitivity across wavelengths
ZWO estimates 91% peak quantum efficiency for the ASI662MM. The response curve shows how sensitivity varies across visible and near-infrared wavelengths.
ZWO’s ASI662MM curve shows relative response, with the peak normalised to 1.0.
Connect the camera to your setup
Telescope connection
Use the included 1.25-inch nosepiece or the camera’s M42 × 0.75 thread with a matching fitting.
Window and filters
The ASI662MM has an AR-coated protective window. The nosepiece setup accepts an optional 1.25-inch filter. ZWO also lists kits with optional CH₄ methane-band and 850 nm IR-pass filters.
Power, data and guiding
The Type-B USB port carries power and data. Use USB 3.0 for the highest frame rates. The 256 MB DDR3 buffer supports data transfer, and the ST4 port provides a separate connection for guiding.
Setup guide
Check the dimensions before mounting
2
Match the thread
The front thread is M42 × 0.75 (T2).
3
Allow for 12.5 mm of camera back focus
Use this distance from the camera’s mounting face to the sensor when planning your optical spacing.
In the box
ASI662MM camera body1
Protective cover1
Quick guide1
2 m USB 3.0 cable1
ST4 cable1
1.25-inch nosepiece1
Imaging filters are optional extras.
Specifications
Sensor and capture
Model
ZWO ASI662MM
Sensor
Sony IMX662 monochrome CMOS
Resolution
1920 × 1080 (2.07 MP)
Pixel size
2.9 µm
Sensor format and active area
1/2.8-inch format, 5.568 × 3.132 mm (6.45 mm diagonal)
Full-frame maximum over USB 3.0
107.6 fps (10-bit high-speed RAW8) or 76.3 fps (12-bit RAW8/RAW16)
Full-frame maximum over USB 2.0
20.9 fps (RAW8), 10.4 fps (12-bit RAW16)
Maximum at 640 × 480 over USB 3.0
227.4 fps (10-bit high-speed RAW8)
Shutter
Rolling shutter
Exposure range
32 µs to 2,000 s
Full well capacity
38.2 ke⁻
Read noise
0.8–6.9 e⁻ (1.22 e⁻ at 19 dB gain)
Peak quantum efficiency
91% (ZWO estimate for ASI662MM)
High conversion gain
Switches on at gain setting 200
Amp glow
Zero amp glow
ADC modes
12-bit normal, 10-bit high-speed
Body, connections and operating limits
Buffer
256 MB DDR3
Protective window
AR-coated, Ø21 × 1.1 mm
Data and power
USB 3.0 / USB 2.0 Type-B, USB powered
Maximum power draw
1.36 W
Guide port
ST4
Telescope interface
M42 × 0.75 (T2), 2-inch fitting or included 1.25-inch nosepiece
Camera back focus
12.5 mm
Body diameter
62 mm
Camera weight
126 g
Tripod connection
1/4-inch mounting socket
Operating conditions
−5 to 50 °C, 20–80% humidity
Storage conditions
−20 to 60 °C, 20–95% humidity
Camera care
Avoid corrosive cleaners and prolonged exposure to sunlight. Keep the telescope pointed away from the Sun unless it is equipped for safe solar imaging.
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Fast monochrome capture for the planets and Moon
The ZWO ASI662MM is the monochrome camera in the ASI662 series. Record in greyscale or add a filter to isolate the wavelengths you want to capture.
107.6 fpsMaximum at full resolution
Capture more frames in a short video
Use USB 3.0 and 10-bit high-speed RAW8 to reach the maximum at 1920 × 1080.
2.9 µmPixel size
Small pixels for close-up imaging
The Sony IMX662 monochrome CMOS sensor uses 2.9 µm pixels to sample fine detail in a magnified image.
1/2.8″Sensor format
Frame a planet or a patch of the Moon
The active area is 5.568 × 3.132 mm. The compact frame is suited to small targets and close-up lunar views.
A closer look at the camera
Front and side views of the ASI662 series housing.
How the monochrome sensor handles light
Full well and read noise
A 38.2 ke⁻ full well gives bright areas room before saturation. High conversion gain engages at a gain setting of 200 to reduce read noise. The camera has zero amp glow at the hardware level.
Sensitivity across wavelengths
ZWO estimates 91% peak quantum efficiency for the ASI662MM. The response curve shows how sensitivity varies across visible and near-infrared wavelengths.
ZWO’s ASI662MM curve shows relative response, with the peak normalised to 1.0.
Connect the camera to your setup
Telescope connection
Use the included 1.25-inch nosepiece or the camera’s M42 × 0.75 thread with a matching fitting.
Window and filters
The ASI662MM has an AR-coated protective window. The nosepiece setup accepts an optional 1.25-inch filter. ZWO also lists kits with optional CH₄ methane-band and 850 nm IR-pass filters.
Power, data and guiding
The Type-B USB port carries power and data. Use USB 3.0 for the highest frame rates. The 256 MB DDR3 buffer supports data transfer, and the ST4 port provides a separate connection for guiding.
Setup guide
Check the dimensions before mounting
1
Check clearance
The camera body is 62 mm across. A 1/4-inch socket provides a tripod mounting point.
2
Match the thread
The front thread is M42 × 0.75 (T2).
3
Allow for 12.5 mm of camera back focus
Use this distance from the camera’s mounting face to the sensor when planning your optical spacing.
In the box
ASI662MM camera body1
Protective cover1
Quick guide1
2 m USB 3.0 cable1
ST4 cable1
1.25-inch nosepiece1
Imaging filters are optional extras.
Specifications
Sensor and capture
Model
ZWO ASI662MM
Sensor
Sony IMX662 monochrome CMOS
Resolution
1920 × 1080 (2.07 MP)
Pixel size
2.9 µm
Sensor format and active area
1/2.8-inch format, 5.568 × 3.132 mm (6.45 mm diagonal)
Full-frame maximum over USB 3.0
107.6 fps (10-bit high-speed RAW8) or 76.3 fps (12-bit RAW8/RAW16)
Full-frame maximum over USB 2.0
20.9 fps (RAW8), 10.4 fps (12-bit RAW16)
Maximum at 640 × 480 over USB 3.0
227.4 fps (10-bit high-speed RAW8)
Shutter
Rolling shutter
Exposure range
32 µs to 2,000 s
Full well capacity
38.2 ke⁻
Read noise
0.8–6.9 e⁻ (1.22 e⁻ at 19 dB gain)
Peak quantum efficiency
91% (ZWO estimate for ASI662MM)
High conversion gain
Switches on at gain setting 200
Amp glow
Zero amp glow
ADC modes
12-bit normal, 10-bit high-speed
Body, connections and operating limits
Buffer
256 MB DDR3
Protective window
AR-coated, Ø21 × 1.1 mm
Data and power
USB 3.0 / USB 2.0 Type-B, USB powered
Maximum power draw
1.36 W
Guide port
ST4
Telescope interface
M42 × 0.75 (T2), 2-inch fitting or included 1.25-inch nosepiece
Camera back focus
12.5 mm
Body diameter
62 mm
Camera weight
126 g
Tripod connection
1/4-inch mounting socket
Operating conditions
−5 to 50 °C, 20–80% humidity
Storage conditions
−20 to 60 °C, 20–95% humidity
Camera care
Avoid corrosive cleaners and prolonged exposure to sunlight. Keep the telescope pointed away from the Sun unless it is equipped for safe solar imaging.
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