Get $10 off your first order
Plus sky events, new gear and expert tips.
You're in! $10 off is in your cart.
It comes off automatically at checkout.
ZWO
ZWO ASI183MC Pro Cooled Colour CMOS Camera
$1,299.00
Cool a fine-pixel colour sensor for long exposures
The ASI183MC Pro combines 2.4 µm pixels with regulated cooling and one-shot colour. The 20.18 MP sensor suits deep-sky setups where fine sampling is useful and your optics and seeing can support it.
Check what your optics can resolve
Small pixels sample more finely at a given focal length. Seeing and focal length still determine whether that sampling helps.
Use the full field when the subject needs it
The 13.2 × 8.8 mm active area lets you frame a broader field than a small cropped readout.
Watch bright star cores
ZWO’s gain chart shows that available well capacity falls as gain rises. Check bright stars when choosing exposure and gain.
Hold the sensor at a repeatable temperature
The regulated two-stage TEC cooler helps control dark current during longer exposures. Use a sustainable setpoint so your calibration darks can match your lights. The cooled body includes a 256 MB DDR3 buffer and a USB 2.0 accessory hub.
Sensor curves and setup diagrams
Full well
The charge a pixel can hold before saturation. The plot starts near 15,000 electrons and falls steadily with gain.
Conversion gain
The electrons represented by one digital count. ZWO marks gain 120 near one electron per count.
Dynamic range
The span between the noise floor and saturation. The range drops steadily as gain rises, from around 12 to under 8 stops across the plot.
Read noise
Noise introduced when the sensor is read. The plotted noise drops from about 3 to around 1.6 electrons RMS.
Relative spectral response
Relative sensitivity varies by colour channel. The blue trace peaks first, followed by green, then red at longer visible wavelengths.
What you need to connect the camera
In the box
Specifications
Sensor and capture
Body and connections
WANT TO KNOW MORE ABOUT THIS PRODUCT?
Let Gemini, ChatGPT or Claude help you. Click a button and ask away.
Cool a fine-pixel colour sensor for long exposures
The ASI183MC Pro combines 2.4 µm pixels with regulated cooling and one-shot colour. The 20.18 MP sensor suits deep-sky setups where fine sampling is useful and your optics and seeing can support it.
Check what your optics can resolve
Small pixels sample more finely at a given focal length. Seeing and focal length still determine whether that sampling helps.
Use the full field when the subject needs it
The 13.2 × 8.8 mm active area lets you frame a broader field than a small cropped readout.
Watch bright star cores
ZWO’s gain chart shows that available well capacity falls as gain rises. Check bright stars when choosing exposure and gain.
Hold the sensor at a repeatable temperature
The regulated two-stage TEC cooler helps control dark current during longer exposures. Use a sustainable setpoint so your calibration darks can match your lights. The cooled body includes a 256 MB DDR3 buffer and a USB 2.0 accessory hub.
Sensor curves and setup diagrams
Full well
The charge a pixel can hold before saturation. The plot starts near 15,000 electrons and falls steadily with gain.
Conversion gain
The electrons represented by one digital count. ZWO marks gain 120 near one electron per count.
Dynamic range
The span between the noise floor and saturation. The range drops steadily as gain rises, from around 12 to under 8 stops across the plot.
Read noise
Noise introduced when the sensor is read. The plotted noise drops from about 3 to around 1.6 electrons RMS.
Relative spectral response
Relative sensitivity varies by colour channel. The blue trace peaks first, followed by green, then red at longer visible wavelengths.
What you need to connect the camera
In the box
Specifications
Sensor and capture
Body and connections
Recently viewed products
- Choosing a selection results in a full page refresh.
- Opens in a new window.