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ToupTek 294C Pro Color CMOS Cooled Camera

Regular Price: US$ 873.12

US$ 788.89 Special Price

Backorder: Shipped in 3-4 working days

Short Description

High-performance cooled color CMOS camera with a large optical system and 3.76-micron pixel size, featuring the SONY IMX294CJK sensor. Ideal for astronomical applications, this camera delivers exceptional performance even in low-light conditions.


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SONY 9.07MP sensor with 16.0 mm diagonal

The SONY IMX294 sensor has a diagonal of 16.0 mm and 4.63x4.63 micron pixels, the 4/3" format is a new, even more performing sensor, with 11.7MP and a resolution of 4144x2822

With this sensor it is possible to photograph an entire cluster of galaxies and show the details of each one at the same time!

The chamber also features dual-stage TEC Cooling with a thermal delta equal to 40° real degrees.

USB 3.0 and USB 2.0 HUB connection

The fast USB3 connection allows you to download the large files generated by the camera very quickly, downloading a full resolution shot will be practically immediate with a notable saving of time even during focusing.

The rear USB 2.0 HUB can accommodate two peripherals (filter wheel, auto-guiding camera, electric focuser), greatly simplifying wiring.

Technical features:

  • Two-stage regulation with thermal delta of 40° compared to the environment
  • Electronic shutter: no vibration
  • Extremely low read noise: 1.0e @24db gain 3.8e @lowest gain
  • 14bit ADC: provide real 14bit Dynamic range
  • USB 3.0: Ultra-high frame download speed, avoids data loss during download
  • USB 2.0 HUB: Double USB 2.0 port useful for connecting the driving camera
  • Window with AR coated

How do spies work?

The camera is equipped with four indicator lights on the back with four different acronyms:

  • PWR= Verifies the correct power supply to the camera
  • Sys= Check the connection of the camera to the PC
  • Tec= Check the operation of the Peltier cooling
  • Fan= Check the operation of the cooling fan

512MB DDR3 internal memory so you don't miss any frames!

Thanks to the brand new 512MB DDR3 internal memory you will not lose any information even via the USB 2.0 outputs!


The new ToupTek 294C-PRO is capable of reaching a real Full Well Capacity of 63700e!

Even bright stars do not saturate with long exposures!

Anti-condensation system integrated in the chamber

Full Well Capacity and Dynamic Range

Binning: The ToupTek 294 Color offers software binning from 1x1 to 8x8 with the sum or averaging method, as well as hardware binning from 1x1 to 3x3 available with the averaging method.

Conversion Gain: The camera supports two conversion gain modes: HCG (High Conversion Gain) and LCG (Low Conversion Gain), with a gain conversion ratio of 3.01.

Full Well Capacity: Electrons are held in each pixel and converted into electrical charge, which can be measured to represent the amount of light incident on each pixel. The maximum electrical charge capacity, defined as "Full Well Capacity", affects the width of the sensor's dynamic range. The ToupTek 294 Colore PRO features an excellent Full Well capacity of 63700ke.

Dynamic Range: Dynamic range is the ratio between the maximum level of the output signal and the noise floor at the minimum amplification signal. Dynamic Range indicates the camera's ability to capture and reproduce both the brightest and darkest parts of an image, along with variations in between.

Mechanical dimension

Achieving the 55mm backfocus is very simple, in fact it will be enough to use the two extensions supplied of 21mm and 16.5mm keeping in mind that the camera's backfocus is equal to 17.5mm

Technical features

  • Sensor: CMOS color sensor SONY IMX294
  • Dimensions: Diagonal 23.2 mm
  • Pixel size: 4.63 µm
  • Number of pixels: 4144x2822 - 11.7MP
  • Bit depth: 14
  • Frames per second: 19 frames at full resolution
  • Cooling: Peltier cooling to 40°C below ambient temperature
  • Power supply: 12V 3A
  • Power connection: 5.5/2.1 mm coaxial power connector (2.5 mm DC connector)
  • Interfaces: USB 3.0 and USB 2.0
  • Supported operating systems: Windows from XP
  • Dimensions: Diameter 80 mm - Length 100 mm
  • Telescope connection: T2 internal thread (M42x0.75)
  • Back focus: 17.5 mm (distance from sensor to internal thread)
  • SNR 47.1 dB
  • Dynamic range 86.8 dB (Low noise mode)
  • Reading noise 2.6 – 1.14e
  • Read Noise (Low Noise Mode) 2.35 – 1.16e
  • QE Peak >84%
  • Full Well 63700ke
  • Capture/Control SDK for Windows/Linux/macOS/Android with cross-platform support (Native C/C++, C#/VB.NET, Python, Java, DirectShow, Twain, etc.)
  • Chamber dimensions: Diameter 80mm x Height 103mm
  • Chamber weight: 0.552kg
  • Cooling: TEC two-stage cooling with effective cooling temperature down to -40°C below ambient temperature during short exposures/-40°C during long exposures (>1s)
  • Supported operating systems: Microsoft® Windows® XP / Vista / 7 / 8 /10 (32 and 64 bit), OSx, Mac OS

What's in the box?

  • Shockproof airtight case
  • USB 3.0 cable
  • 12V 3.0A power supply
  • 2" nose
  • M42 male adapter
  • T2 female cap
  • Extension T2 male/T2 female 21mm
  • Extension T2 male/M48 female 16.5mm
  • ring M48M to M42F

Additional Information

Additional Information

ManufacturerToupTek Astro
NameToupTek 294C Pro Color CMOS Cooled Camera
Warranty3 YEARS
Sensor NameSONY IMX294CJK
Sensor TechnologyCMOS
Sensor TypeCOLOR
Sensor Dimension4144x2822
Sensor Resolution11.7MP
Pixel Size (µm)3.76
Bit Rate14 bit
InterfaceUSB 3.0
Full well63700ke
QE peak>84%


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