ZWO ASI 676 MM Mono Astro Camera – uncooled astrophotography
The ZWO ASI 676 MM Mono Astro Camera is a square monochrome camera with a Starvis 2 sensor for flexible fields of view. It is a good choice whenever high frame rates, a steady image and straightforward operation are more important than active cooling.
What is this camera suited for?
With its Sony IMX676 / ASI 676, it is designed for Moon, planets, meteors, all-sky imaging and imaging with color filters. The uncooled design keeps the camera compact and quick to set up. For long deep-sky exposures, a cooled camera is usually preferable; for the Moon, planets, guiding and many EAA applications, this model is especially practical.
Key features
| Series / sensor | Sony IMX676 / ASI 676 |
|---|---|
| Camera type | Mono |
| Cooling | uncooled, passive heat dissipation |
| Typical applications | Moon, planets, meteors, all-sky imaging and imaging with color filters |
| Connection | USB camera with autoguider/ST4 support depending on model |
The camera works with the relevant ZWO software and common capture applications. For solar imaging, use it only with a suitable solar filter mounted in front of the telescope.
CMOS sensor in detail
The monochrome ASI 676 MM uses the square Sony IMX676 sensor without a UV/IR-cut filter. This keeps the near-UV and near-IR range available, which is useful for specialized lunar, solar and planetary imaging as well as all-sky and meteor recording. The square field also makes capturing and stitching mosaics easier.
Sensor specifications
| Sensor | Sony IMX676 monochrome, STARVIS 2 |
|---|---|
| Sensor format | 1/1.6 inch; square, 7.1 × 7.1 mm |
| Resolution | 3552 × 3552 pixels / 12.61 MP |
| Pixel size | 2 µm |
| ADC / read noise | 12 bit / from approx. 0.56 e⁻ |
| Quantum efficiency | approx. 83 % |
| Full-well capacity | approx. 10.55 ke⁻ |
| Frame rate | up to 31.2 fps |
| Features | HCG mode und no visible amp glow |
| Protective window | AR-coated, full transmission up to in den IR-Bereich |
These figures help when choosing the right focal length and imaging method. Especially with small pixels, the actual level of detail depends on the combination of telescope, seeing and image scale. For solar imaging, always use a suitable solar filter mounted in front of the telescope.
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