ASI294MM

By popular demand, we now introduce the ASI294MM, the monochrome version of the ASI294MC. Some of the highlights include:

• Back-illuminated sensor – improving sensitivity and reducing noise
• 4/3" format with 4.64μm pixel size – ideal for many telescope types
• 14-bit ADC – delivering high dynamic range
• Impressive 66ke- full well capacity
• 4144×2822 resolution – with Bin1 mode offering 8288×5644 resolution at 2.3μm pixel size

With peak QE of ~90% and ultra-low readout noise of 1.2e, the ASI294MM is an excellent small-format monochrome camera for planetary imaging.

Sensor dimensions: 19.1×13.0mm (23mm diagonal)

Sensor

ASI294MM

ASI294MC

IMX294CJK Sensor Technology

Key Features:

• Type 4/3 format (23.2mm diagonal)
• 11.71M effective pixels (modified from original 10.71M)
• 4K resolution at 120fps (10-bit mode)
• Exceptional low-light performance (SNR1s: 0.14 lx)
• Large 4.63μm pixels for improved sensitivity

Performance Specifications

14-bit ADC & 13 Stops Dynamic Range

Superior to ASI1600, with 14-bit ADC achieving 13 stops dynamic range.

HCG Mode

Activates at gain >120 (12db), reducing read noise below 2e while maintaining 13-stop dynamic range.

ASI294MM Unlocked Bin1 Mode

Switchable between:

• Bin1: 2.3μm pixels, 8288×5644 resolution (47MP), 14k full well
• Bin2: 4.6μm pixels, 4144×2822 resolution (11.7MP), 66k full well

Quantum Efficiency

ASI294MM

Peak QE ~90%, outperforming both color version and ASI1600MM.

ASI294MC

Estimated peak QE >75% with back-illuminated sensor technology.

Connectivity

• USB 3.0: 5Gbps bandwidth (19fps @12bit or 16.3fps @14bit)
• ST4 Port: For mount autoguiding

Mechanical Diagram

What's in the box?

* The USB 3.0 cable in ASI planetary camera boxes was changed from black to red starting June 2023.