G3M178M

IMX178 High-Speed USB 3.0 Mono Planetary Camera

Regular price $259.00
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Powered by Sony's STARVIS IMX178 monochrome sensor (2.4µm pixels) and a 14-bit ADC, G3M178M is engineered for high-resolution planetary, lunar, and solar imaging with exceptional 82dB dynamic range. USB 3.0 and hardware ROI support deliver rapid frame rates, while its high sensitivity makes it an ideal guide camera for OAGs and guide scopes.

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Compatibility / Requirements

The Standard Version uses a C-mount for standard accessories and telescopes. The Extended Version uses a CS-mount with a shorter flange focal distance for broader OAG compatibility. Both versions accept 1.25-inch filters when connected through a 1.25-inch extender.

Delivery and Shipping

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Warranty and Support

For setup support, software downloads and warranty service, contact ToupTek Astro support with your order information.

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Full Specifications

  • Sensor: Sony IMX178 Mono (1/1.8")
  • Resolution: 3040×2048 (6.2MP)
  • Pixel Size: 2.4 μm
  • Image Area: 7.4 × 5.0 mm
  • FPS (USB 3.0): 29.1 FPS @ 3040×2048 (14-bit)
    58.6 FPS @ 3040×2048 (8-bit)
  • FPS (USB 2.0): 2.4 FPS @ 3040×2048 (14-bit)
    4.9 FPS @ 3040×2048 (8-bit)
  • Max SNR: 40 dB
  • Dynamic Range: 82 dB
  • Read Noise: 2.2 – 1.4 e-
  • QE: >81%
  • Full Well: 10.7 ke-
  • ADC: 14 bit
  • USB: USB 3.0 / USB 2.0
  • Camera Weight: 0.07 kg
  • Back Focus Distance: 17.5 mm (standard) / 12.5 mm (extended)
  • TEC Cooling: Passive heat dissipation

Meet G3M178M

Exceptional Dynamic Range & High-Resolution Monochrome Performance

Powered by Sony’s advanced IMX178 monochrome sensor, the G3M178M delivers high-resolution 6.2MP imaging with an outstanding 82dB dynamic range. Unrestricted by a Bayer color filter array, this monochrome camera captures 100% of incoming light across visible and NIR wavelengths—dramatically boosting image contrast and detail for fine planetary, lunar, and solar targets.

G3M178M planetary camera with a blue housing and black front adapter

G3M178M Planetary Camera Performance Analysis

Mono VS Color

Which Do You Need For Planetary Imaging?

Unlocking Planetary Details

NIR Imaging & Atmospheric Penetration

Saturn by TritonYung

Paired with an 850nm IR-Pass or 890nm Methane (CH4) filter, the G3M678M isolates deep atmospheric structures on Jupiter and Saturn, revealing subtle cloud dynamics invisible in standard light.

Why Choose G3M Series Planetary Camera

512MB DDR3 High-Speed Buffer & Sony STARVIS 2 Technology

Built on Sony’s next-generation STARVIS 2 back-illuminated technology, the sensor features reduced dark current, lower readout noise, and higher dynamic range. Coupled with an onboard 512MB DDR3 high-speed RAM buffer, the G3M series guarantees smooth, frame-drop-free data transfer while preventing sensor heating and buffer-induced artifacts during long recording sequences.

512MB DDR3 high-speed buffer used by the G3M series
G3M678M amp-glow and zero amp-glow comparison

Zero Amp-Glow

The G3M series features advanced circuit architecture that completely eliminates amp-glow at the hardware level. Whether shooting high-frame-rate planetary videos at high gain or longer exposures for autoguiding, your raw frames remain clean, pristine, and artifact-free.

G3M series cameras used for planetary imaging and guiding

2-in-1 Versatility: Planetary & Guiding

Why buy two cameras when one can do it all? G3M series serves as high-end planetary cameras while doubling as ultra-sensitive auto-guiding cameras for deep-sky astrophotography setups.

G3M678M connected to an astrophotography imaging train

Compatible with OAG and Guide Scope

Featuring a standard 1.25" form factor, the G3M series planetary camera seamlessly fits into standard 1.25" focusers, guide scopes, and Off-Axis Guiders (OAGs) from ToupTek Astro and third-party brands, making it an effortless upgrade for any astrophotography imaging train.

Standard & Extended Versions

G3M standard and extended camera versions

The Standard Version uses a C-mount for standard accessories and telescopes. The Extended Version uses a CS-mount with a longer front barrel and shorter flange focal distance for broader OAG compatibility. Both versions accept 1.25-inch filters when connected through a 1.25-inch extender.

What's in the Box

G3M678M camera and included accessories

Frequently Asked Questions

What is the difference between the G3M series and GPM series cameras?

G3M is ToupTek Astro's planetary camera series, designed primarily for high-frame-rate planetary, lunar, and solar imaging. GPM is the guide camera series, designed primarily for autoguiding. Both series can also support selected near-infrared imaging workflows, so choose G3M when high frame rate is the priority and GPM when guiding is the primary task.

What accessories are needed for infrared Milky Way imaging with G3M/GPM cameras?

For infrared Milky Way imaging, prepare an IR-sensitive G3M or GPM camera, a compatible lens, an infrared-pass filter, a stable tripod or support, a laptop, smartphone, or compatible controller for image acquisition, and the required USB data cable. For a G3M camera, remove the front C-mount or CS-mount ring, then install the LP825 filter CS-adapter ring together with the lens.

What is the difference between the Standard Version and Extended Version?

The Standard Version uses a C-mount for standard accessories and telescopes. The Extended Version uses a CS-mount with a longer front barrel and shorter flange focal distance for broader OAG compatibility. Both versions accept 1.25-inch filters when connected through a 1.25-inch extender.