cameracomparison · 2-way
ZWO ASI183MC Pro vs ZWO ASI294MC Air
ZWO
ASI183MC Pro
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO
ASI294MC Air
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
Key differences
-31% larger sensor
Finer pixels (2.4µm vs 4.63µm)
73% more resolution
Specifications
| Specification | ZWO ASI183MC Pro | ZWO ASI294MC Air |
|---|---|---|
| Sensor | ||
| Type | dedicated | dedicated |
| Sensor | Sony IMX183 | Sony IMX294 |
| Sensor tech | CMOS | CMOS |
| Format | 1" | 4/3" |
| Sensor size | 13.2×8.8mm | 19.1×13.0mm |
| Diagonal | 15.9mm | 23.2mm |
| Pixel size | 2.40µm | 4.63µm |
| Resolution | 5496×3672 | 4144×2822 |
| Megapixels | 20.2MP | 11.7MP |
| Color | Yes | Yes |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 15000e⁻ | 66000e⁻ |
| Peak QE | 84% | 75% |
Advantages of ZWO ASI183MC Pro
- Finer sampling at 2.4µm pixels
- Higher resolution (20.2MP vs 11.7MP)
Advantages of ZWO ASI294MC Air
- Larger sensor (23.2mm vs 15.9mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
Best for — ZWO ASI183MC Pro
- Longer focal lengths — tighter framing on small targets
- Planetary and lunar high-resolution imaging
- Long-exposure deep-sky under any sky
- One-shot color — quick results, less processing
Best for — ZWO ASI294MC Air
- Balanced field for most refractors
- Fast, low-noise deep-sky at short focal lengths
- Long-exposure deep-sky under any sky
- One-shot color — quick results, less processing
ZWO ASI183MC Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 3.03° × 2.02°Scale: 1.98"/px
- On 800mm SCT reducerFOV: 0.95° × 0.63°Scale: 0.62"/px
- On 2000mm SCT nativeFOV: 0.38° × 0.25°Scale: 0.25"/px
ZWO ASI294MC Air — typical FOV & scale
- On 250mm refractor (wide)FOV: 4.38° × 2.98°Scale: 3.82"/px
- On 800mm SCT reducerFOV: 1.37° × 0.93°Scale: 1.19"/px
- On 2000mm SCT nativeFOV: 0.55° × 0.37°Scale: 0.48"/px
ZWO ASI183MC Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO ASI294MC Air — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.