Latest Deals!

ZWO ASI 178 Color CMOS Telescope Camera

  • Sale
  • Regular price $349.00

Free Shipping
Add to Wishlist
Already have gear? Trade it in for cash or new equipment.

Accessories Added

  • Pixel Array: 3096 x 2080
  • Pixel Size: 2.4 Microns
  • Interface: USB 3.0
  • Great value and highly versatile full color CMOS camera


ZWO ASI 178 Color CMOS Telescope Camera

This ZWO ASI178MC Astronomy Camera includes the back illuminated 6.4M resolution Sony IMX178 image sensor. This 1/1.8 inch CMOS sensor has a 3096 x 2080 pixel array and a 2.4 micrometer square pixel size. With a 14-bit ADC, extremely low read noise of 2.2e, and superior sensitivity combine to make the ZWO ASI178MC an excellent camera for both astronomy and microscopy.


Sony IMX178 CMOS Sensor Features:

  • The Sony IMX178 back illuminated CMOS image sensor offers high sensitivity, resolution and dynamic range.
  • The IMX185 is an "Exmor R" sensor with notably improved imaging features, including sensitivity and low read noise, by correcting the basic structure of "Exmor" adopted column parallel A/D converter to back illuminated type.
  • The IMX178 is a Sony STARVIS sensor and has a sensitivity of 2000mV+ per 1 micron square (when imaging with a 706 cd/m2 light source, f/5.6 in 1 second accumulation correspondent), and provides superior image quality in the visible and near IR light regions.
  • 14-bit output helps achieve high dynamic range which lessened quantization noise and hidden dark random noise. This facilitates clear image quality in light and dark areas, even with high contrast imaging targets.
  • Everything required to control your ZWO Astronomy Camera is readily available at the ZWO website.


ZWO ASI178MC Color Astronomy Camera Specifications:

  • Sensor: 1/1.8-inch CMOS IMX178
  • Resolution: 6.4 Mega Pixels
  • Pixel Array: 3096 x 2080
  • Pixel Size: 2.4 micrometer x 2.4 micrometer
  • Sensor Size: 7.4 mm x 5 mm
  • Diagonal: 8.92 mm
  • Exposure Range: 32 microseconds to 1,000 seconds
  • ROI: Supported
  • ST4 Guider Port: Yes
  • Focus Distance to Sensor: 12.5 mm
  • Shutter Type: Rolling Shutter
  • Window: IR-Cut
  • Operating System Compatibility: Mac, Windows, Linux
  • Interface: USB 3.0/ USB 2.0
  • Bit rate: 14-bit output (14-bit ADC)
  • Adapter: 2-inch to 1.25-inch (M42x0.75)
  • Dimensions: 62 mm x 36 mm
  • Weight: 4.23-ounces (without lens)
  • Working Temperature: Neg.5-degrees C to Neg.45-degrees C
  • Working Relative Humidity: 20-percent to 80-percent
  • Storage Relative Humidity: 20-degrees to 95-degrees


ADC14 bit
Back focus17.5mm
Bayer MatrixColor
Camera ConnectionM42 x 0.75
Camera SeriesZWO ASI
Delta T40°C Below Ambient
Dimensions62mm x 36mm
Dynamic Range13.5 Stops
Free ShippingYes
Front or Back IlluminationBack
Full Rez Frame Rate60fps
Full Well25ke
InterfaceUSB 3.0
Max Frame Rate479.7fps
Maximum Exposure Time1000 seconds
Mega Pixels6.4 mp
Minimum Exposure Time0.000032 seconds
Operating System CompatibilityLinux (3rd Party) & Mac & Windows
Pixel Array3096 x 2080
Pixel Size2.4 microns
Power Consumption12V 2A max
Read Noise2.2e
Sensor Diagonal9mm
Sensor TypeCMOS
SensorSony IMX178
Weight0.9 lbs


  • ZWO ASI178MM or ASI178MC Camera Body
  • 2 m long ST4 guider cable
  • 1.25-inch Cover
  • M42/ 1.25-inch T-Mount
  • 2 m long USB3.0 cable
  • Driver and Extra Software CD (Mac, PC, and Linux Compatible)



Customer Reviews

4.1 Based on 7 reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!


A Regretable Purchase

Here at the OPT website one will find that this camera appears as a possible guide camera choice. I bought this camera to guide (because I have a long focal length OTA) and for planetary images. As a guide camera it dose not work. I talked to a tech at a competator reseller to OPT and a tech explained the camera did not work for him either as a guide camera; having tried it in both guide scope & OAG applications. He explained all his other camers worked. He acquire the camera for the same reasons as I but he does like the camera for planetary work. The camera will also not focus with a bahtinov mask. I kept questioning the focus of this camera and finally got a bahtinov just to focus this unit. Rather than getting the characteristic star pattern it creates a butterfly wings-like splash of color and the diffration pattern it creates are faint colorful squiggly lines. I have used this camera to look at the moon and personally I think my Cannon does a better job. I have not tried the 178mc on Jupiter yet; maybe that will improve my option of the camera. In sum, if you want a camera just to look at planets this may be fine for you, but do not buy it as a multi-use camera.

Jerry B.
United States

Love The Camera!

Camera has not been used in the field due to bad weather but expect to see it perform well. Set up software install with no problem into my laptop and the camera performed well on my tabletop. Item was well packaged. Thank you for your prompt shipping. -- Jerry E. Bayles

United States

First Light ASI-178MC Review

I've been doing planetary imaging for years, bought the ASI-178MC to try lucky imaging of some deep space objects. I'm pleasantly surprised by this camera, lower noise and higher sensitivity than I expected. I was able to able to get some great detail by stacking a bunch of 5-second exposures.

Liliana P.

The product has not reached the customer

I did not receive the product and I did not confirm when it would arrive. At the time of purchase, they should inform the client of the anticipated date of arrival.

Nicholas M.
United States

OPT cares about your satisfaction.

I must say that OPT always makes me feel relaxed about the process of understanding what I need, and how satisfied I am with the purchases I've made. They stand behind the promise of not letting you get stuck with products you aren't satisfied with. purchasing, and using. I'll keep going here

United States

Great Customer Assistance

While attempting to purchase an Astro camera from OPT I discovered a limitation in the checkout software related to my Military address. Much to my pleasure OPT was able to offer support for customers like myself and with the help of a sales agent a quick and expedient solution was provided thus allowing me to complete my transaction. My camera was shipped quickly and received quickly, in tact and in perfect working order. Happy customer.