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ZWO ASI294MC Pro 11.7MP USB 3.0 Cooled Color Astronomy Camera

In Stock - Ships Today if Ordered by 3pm! (Mon - Fri)
Note:ZWO Cooled cameras require a 12V power source for the TEC cooler and USB hub power. If you don’t have one, please add it through the options on the right side of the product display. The ASI29...

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Note:ZWO Cooled cameras require a 12V power source for the TEC cooler and USB hub power. If you don’t have one, please add it through the options on the right side of the product display.

The ASI294MC Pro is the first camera in the world equipped with the latest Sony IMX294CJK sensor.

The sensor has been refined by ZWO and remodeled it to increase the diagonal size to 23.2 mm with approximately an 11.7 megapixel effective layout (4/3 format) using 4.63um pixels.

The IMX294CJK sensor is the first in-house image sensor for astronomic cameras to adopt the 4/3 format and provides the necessary number of pixels for true 4k output at 120 frames per second (w/ ADC 10-bit output mode. The ASI294MC Pro can run up to 25fps at 4k format when used with USB 3.0). In addition, the use of larger-sized pixels achieves an SNR of 0.14 lx* which is very close to the performance of the ASI224 (0.13 lx*).

Exceptional low-illumination performance of SNR1s: 0.14 lx is realized by the use of a large-size optical system and by expanding the area per pixel to 4.63 um. This makes the IMX294CJK ideal for astronomic camera market applications that require low-illumination performance.

DDR Memory Buffer

The ASI294MC Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.  The DDR memory buffer is the main difference between non-Pro and Pro cameras, along with the cooling in the Pros.

14bit ADC w/ 13 stops DR

The ASI294MC Pro has a 14bit ADC unit, allowing it to achieve 13 stops of dynamic range. This is an excellent characteristic for deep sky imaging, which is inherently high dynamic range. At 13 stops, the ASI294MC Pro has even more dynamic range than the ASI1600.

HCG Mode

The ASI294MC Pro incorporates a HCG (high conversion gain) mode, which reduces read noise to even lower levels at higher gain without loss to dynamic range. It's automatically enabled when the gain setting is 120 or higher. Read noise will drop under 2e-, while dynamic range will remain at 13 stops.

This cameras has a 63700e full well, which is 3 times that of the ASI1600’s capacity. Even bright stars won’t saturate under long exposure. This camera can achieve a higher SNR (signal to noise ratio) with just one single exposure.

Reliable Design

The ASI294MC Pro has the same overall mechanical design as ASI1600 Pro. There are four screws that seal the sensor chamber. The camera design has been extensively tested and is very stable. Even when used in higher humidity environments, the ASI294MC Pro will still work fine without dew problems.

High QE

The IMX294 sensor is a BSI (backside illuminated type) sensor, which has a very high QE (quantum efficiency, over 75% peak)

Dark Current

The dark current of the ASI294MC Pro is a bit lower than the ASI1600 at same temperature, based on ZWO test results.

USB 3.0 Port & USB2.0 HUB

USB 3.0 Port: Provides 5GB bandwidth to make it possible for the ASI294MC Pro to run at 16 fps (14bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution (11.7MP).

The USB 2.0 hub can connect with various accessories, such as filter wheels, guide cameras and electronic focusers, allowing you to better manage your cables. The ASI294MC Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the 12V external power source which also powers the TEC cooling.

Cooling System

The ASI294 Pro has a 2-stage TEC cooling system that enables deep cooling (35°C-40°C below ambient). The cooler requires an external power supply, which is not included with the camera. You may order a suitable power supply from here.

Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V.

Using a battery 9-15V is also suitable for the cooler power supply.

What's in the Box?

The ASI294MC Pro box includes all necessary cables, adapters, and manuals to get you started imaging right away:

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

Items that have been opened, damaged or are otherwise unsaleable will be subject to a minimum 10% restocking fee, to be assessed by Telescopes Canada upon receipt of the returned goods

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Typographical Errors and Order Cancellations

Telescopes Canada reserves the right to cancel an order due to an error in pricing by Telescopes Canada or one of our suppliers, equipment being no longer obtainable, or other events which are out of our control.

Client-Initiated Cancellations

Client-initiated order cancellations are accepted prior to delivery of the equipment to the customer, thereafter it is a return.