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The ZWO ASI664MC is a compact color planetary camera built around Sony's 4.15MP IMX664 STARVIS 2 sensor. With 2.9µm pixels, read noise as low as 0.46e and up to 95 frames per second at full resolution, it's a great choice for sharp, detailed images of Jupiter, Saturn, Mars, the Moon and the Sun (with a proper solar filter).
Why choose the ZWO ASI664MC
- Wider field than the ASI662MC: 2704 x 1536 resolution with the same 2.9µm pixels, so there's more room for the Moon, the Sun and planets with their moons.
- Ultra-low noise: read noise from 0.46e, with HCG mode switching on automatically at gain 252 and above.
- Zero amp glow: no-glow circuitry keeps longer exposures clean, great for EAA (live viewing) and guiding.
- Fast capture: 95fps at full resolution with a 256MB DDR3 buffer to prevent dropped frames.
- Deep full well: 36.5ke full well capacity and 91% peak QE.
- Light and compact: just 126g and 62mm in diameter.
Planetary, lunar and solar imaging with the ASI664MC
- Planetary imaging (Jupiter, Saturn, Mars, Venus)
- Lunar close-ups and full-disc Moon at shorter focal lengths
- Solar imaging (with an approved full-aperture solar filter)
- Electronically assisted astronomy (EAA) and autoguiding
ASI664MC specifications
| Sensor | Sony IMX664 (STARVIS 2), color |
| Sensor format | 1/1.8" (9.02mm diagonal) |
| Resolution | 4.15MP, 2704 x 1536 |
| Pixel size | 2.9µm |
| Sensor size | 7.84mm x 4.45mm |
| Max frame rate | 95fps at full resolution |
| Shutter | Rolling |
| Exposure range | 32µs to 2000s |
| Read noise | 0.46e to 5.8e |
| Peak QE | 91% |
| Full well | 36.5ke |
| ADC | 12-bit |
| Buffer | 256MB DDR3 |
| Interface | USB 3.0 / USB 2.0, ST4 guide port |
| Protect window | AR coated (no IR-cut) |
| Adapter | M42 x 0.75 |
| Back focus | 12.5mm |
| Dimensions / weight | 62mm diameter / 126g |
| Operating temperature | -5°C to 50°C |
ASI664MC setup and compatibility
- Connects to your telescope with the included 1.25" nosepiece, or through the M42 x 0.75 thread.
- Built-in ST4 port for autoguiding and a 1/4"-20 thread for mounting on a camera tripod.
- Works with ASIStudio, SharpCap, FireCapture and other popular capture software.
- For planets low in the sky, a ZWO Atmospheric Dispersion Corrector removes the color fringing caused by the atmosphere.
What's in the box
- ASI664MC camera body
- Cover
- 1.25" nosepiece
- ST4 guide cable
- 2m USB 3.0 cable
- Quick guide
ASI664MC FAQ
Do I need an IR-cut filter with the ASI664MC?
For natural color on planets and the Moon, yes. The ASI664MC has an AR-coated window rather than an IR-cut filter, so near-infrared light reaches the sensor and can soften detail and shift colors. A 1.25" ZWO UV/IR-cut filter threads onto the nosepiece and fixes this. Leave it off when you want to use IR-pass or methane filters.
Do I need a Barlow lens for planetary imaging?
Usually, yes. With 2.9µm pixels, the ASI664MC works best at around f/10 to f/15 for planets. Most telescopes need a 2x to 3x Barlow to reach that, such as the Celestron 2x X-Cel LX or Tele Vue 3x Barlow, while slower scopes such as many Schmidt-Cassegrains may need less.
ASI664MC vs ASI662MC: which should I buy?
The ASI664MC is the step up. It has a larger 1/1.8" sensor (vs 1/2.8"), twice the resolution (4.15MP vs 2.07MP) and lower read noise (0.46e vs 0.8e), giving you a wider field of view with the same 2.9µm pixels. The ASI662MC is slightly faster (107.6fps vs 95fps) and costs less, so it suits beginners on a tight budget. For an even larger field, the ASI585MC offers 8.29MP.
Can the ASI664MC be used as a guide camera?
Yes. Its low read noise and zero amp glow make it a capable guide camera, and it connects to your mount through the built-in ST4 port or by USB with guiding software like PHD2.
Compare more options in our ZWO planetary cameras collection. Questions about whether the ASI664MC is right for your telescope? Contact us and our team will help you pick the right setup.