cameracomparison · 2-way
ZWO ASI183MM Pro vs ZWO ASI432MM
ZWO
ASI183MM Pro
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO
ASI432MM
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
Key differences
-10% larger sensor
Finer pixels (2.4µm vs 9µm)
1035% more resolution
Specifications
| Specification | ZWO ASI183MM Pro | ZWO ASI432MM |
|---|---|---|
| Sensor | ||
| Type | dedicated | dedicated |
| Sensor | Sony IMX183 | Sony IMX432 |
| Sensor tech | CMOS | CMOS |
| Format | 1" | 1.1" |
| Sensor size | 13.2×8.8mm | 14.1×10.6mm |
| Diagonal | 15.9mm | 17.6mm |
| Pixel size | 2.40µm | 9.00µm |
| Resolution | 5496×3672 | 1608×1104 |
| Megapixels | 20.2MP | 1.8MP |
| Color | No | No |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 15000e⁻ | 90000e⁻ |
| Peak QE | 84% | 80% |
Advantages of ZWO ASI183MM Pro
- Finer sampling at 2.4µm pixels
- Higher resolution (20.2MP vs 1.78MP)
Advantages of ZWO ASI432MM
- Larger sensor (17.6mm vs 15.9mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
Best for — ZWO ASI183MM Pro
- Longer focal lengths — tighter framing on small targets
- Planetary and lunar high-resolution imaging
- 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 ASI183MM 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 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 ASI183MM Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
ZWO ASI432MM — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.