cameracomparison · 2-way
ZWO ASI294MM Pro vs ZWO ASI2400MM Pro
ZWO
ASI294MM Pro
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
Key differences
-47% larger sensor
Finer pixels (4.63µm vs 5.94µm)
91% more resolution
Specifications
| Specification | ZWO ASI294MM Pro | ZWO ASI2400MM Pro |
|---|---|---|
| Sensor | ||
| Type | Dedicated Cooled | Dedicated Cooled |
| Sensor | Sony IMX492 | Sony IMX410 |
| Sensor tech | CMOS | CMOS |
| Format | 4/3" | Full Frame |
| Sensor size | 19.1×13.0mm | 36.0×24.0mm |
| Diagonal | 23.1mm | 43.3mm |
| Pixel size | 4.63µm | 5.94µm |
| Resolution | 8288×5644 | 6072×4042 |
| Megapixels | 46.8MP | 24.5MP |
| Color | No | No |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 63700e⁻ | 100000e⁻ |
| Peak QE | 75% | 80% |
Advantages of ZWO ASI294MM Pro
- Finer sampling at 4.63µm pixels
- Higher resolution (46.8MP vs 24.5MP)
Advantages of ZWO ASI2400MM Pro
- Larger sensor (43.3mm vs 23.1mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
Best for — ZWO ASI294MM Pro
- Balanced field for most refractors
- Fast, low-noise deep-sky at short focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
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
ZWO ASI294MM Pro — 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 — 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 ASI294MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
ZWO ASI2400MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with wide-field refractors.