cameracomparison · 2-way
ZWO ASI2400MM Pro vs ZWO ASI294MC Air
ZWO
ASI294MC Air
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
Key differences
87% larger sensor
Larger pixels (5.94µm vs 4.63µm)
109% more resolution
Mono vs color
Specifications
| Specification | ZWO ASI2400MM Pro | ZWO ASI294MC Air |
|---|---|---|
| Sensor | ||
| Type | Dedicated Cooled | dedicated |
| Sensor | Sony IMX410 | Sony IMX294 |
| Sensor tech | CMOS | CMOS |
| Format | Full Frame | 4/3" |
| Sensor size | 36.0×24.0mm | 19.1×13.0mm |
| Diagonal | 43.3mm | 23.2mm |
| Pixel size | 5.94µm | 4.63µm |
| Resolution | 6072×4042 | 4144×2822 |
| Megapixels | 24.5MP | 11.7MP |
| Color | No | Yes |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 100000e⁻ | 66000e⁻ |
| Peak QE | 80% | 75% |
Advantages of ZWO ASI2400MM Pro
- Larger sensor (43.3mm vs 23.2mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
- Higher resolution (24.5MP vs 11.7MP)
- Mono sensor — ideal for narrowband and LRGB
Advantages of ZWO ASI294MC Air
- Finer sampling at 4.63µm pixels
- One-shot color — simpler workflow
Best for — ZWO ASI2400MM Pro
- Wide-field mosaics and full-frame telescopes
- Fast, low-noise deep-sky at short focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
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 ASI2400MM Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 8.25° × 5.50°Scale: 4.90"/px
- On 800mm SCT reducerFOV: 2.58° × 1.72°Scale: 1.53"/px
- On 2000mm SCT nativeFOV: 1.03° × 0.69°Scale: 0.61"/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 ASI2400MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with wide-field refractors.
ZWO ASI294MC Air — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.