cameracomparison · 2-way
ZWO ASI1600MM Pro vs ZWO ASI432MM
ZWO
ASI1600MM Pro
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
ZWO
ASI432MM
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
Key differences
26% larger sensor
Finer pixels (3.8µm vs 9µm)
821% more resolution
Specifications
| Specification | ZWO ASI1600MM Pro | ZWO ASI432MM |
|---|---|---|
| Sensor | ||
| Type | Dedicated Cooled | dedicated |
| Sensor | Panasonic MN34230 | Sony IMX432 |
| Sensor tech | CMOS | CMOS |
| Format | 4/3" | 1.1" |
| Sensor size | 17.7×13.4mm | 14.1×10.6mm |
| Diagonal | 22.2mm | 17.6mm |
| Pixel size | 3.80µm | 9.00µm |
| Resolution | 4656×3520 | 1608×1104 |
| Megapixels | 16.4MP | 1.8MP |
| Color | No | No |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 20000e⁻ | 90000e⁻ |
| Peak QE | 60% | 80% |
Advantages of ZWO ASI1600MM Pro
- Larger sensor (22.2mm vs 17.6mm diagonal) — wider field
- Finer sampling at 3.8µm pixels
- Higher resolution (16.4MP vs 1.78MP)
Advantages of ZWO ASI432MM
- Larger pixels — better low-light per-pixel sensitivity
Best for — ZWO ASI1600MM Pro
- Balanced field for most refractors
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
Best for — ZWO ASI432MM
- Longer focal lengths — tighter framing on small targets
- Fast, low-noise deep-sky at short focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
ZWO ASI1600MM Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 4.06° × 3.07°Scale: 3.14"/px
- On 800mm SCT reducerFOV: 1.27° × 0.96°Scale: 0.98"/px
- On 2000mm SCT nativeFOV: 0.51° × 0.38°Scale: 0.39"/px
ZWO ASI432MM — typical FOV & scale
- On 250mm refractor (wide)FOV: 3.23° × 2.42°Scale: 7.43"/px
- On 800mm SCT reducerFOV: 1.01° × 0.76°Scale: 2.32"/px
- On 2000mm SCT nativeFOV: 0.40° × 0.30°Scale: 0.93"/px
ZWO ASI1600MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
ZWO ASI432MM — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.