cameracomparison · 2-way
QHYCCD QHY5III200M vs ZWO ASI585MC Pro
QHYCCD
QHY5III200M
A strong fit for photographers stepping into astro pairing with longer focal lengths where framing is tight.
ZWO
ASI585MC Pro
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.
Key differences
37% larger sensor
Larger pixels (9µm vs 2.9µm)
-79% more resolution
Uncooled
Mono vs color
Specifications
| Specification | QHYCCD QHY5III200M | ZWO ASI585MC Pro |
|---|---|---|
| Sensor | ||
| Type | guide-camera | Dedicated Cooled |
| Sensor | Sony IMX432 | Sony IMX585 |
| Sensor tech | CMOS | CMOS |
| Format | 1.1" | 1/1.2-inch |
| Sensor size | 14.1×10.6mm | 11.2×6.3mm |
| Diagonal | 17.6mm | 12.8mm |
| Pixel size | 9.00µm | 2.90µm |
| Resolution | 1608×1104 | 3840×2160 |
| Megapixels | 1.8MP | 8.3MP |
| Color | No | Yes |
| Cooling | ||
| Cooled | No | Yes |
| Performance | ||
| Full well | 90000e⁻ | 40000e⁻ |
| Peak QE | 80% | 91% |
Advantages of QHYCCD QHY5III200M
- Larger sensor (17.6mm vs 12.85mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
- Mono sensor — ideal for narrowband and LRGB
Advantages of ZWO ASI585MC Pro
- Finer sampling at 2.9µm pixels
- Higher resolution (8.3MP vs 1.78MP)
- Regulated cooling for long exposures
- One-shot color — simpler workflow
Best for — QHYCCD QHY5III200M
- Longer focal lengths — tighter framing on small targets
- Fast, low-noise deep-sky at short focal lengths
- Narrowband and LRGB workflows
Best for — ZWO ASI585MC Pro
- Longer focal lengths — tighter framing on small targets
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- One-shot color — quick results, less processing
QHYCCD QHY5III200M — 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 ASI585MC Pro — typical FOV & scale
- On 250mm refractor (wide)FOV: 2.57° × 1.44°Scale: 2.39"/px
- On 800mm SCT reducerFOV: 0.80° × 0.45°Scale: 0.75"/px
- On 2000mm SCT nativeFOV: 0.32° × 0.18°Scale: 0.30"/px
QHYCCD QHY5III200M — recommended user
A strong fit for photographers stepping into astro pairing with longer focal lengths where framing is tight.
ZWO ASI585MC Pro — recommended user
A strong fit for dedicated deep-sky imagers pairing with longer focal lengths where framing is tight.