cameracomparison · 2-way
QHYCCD QHY9 vs QHYCCD QHY411M
Key differences
-67% larger sensor
Larger pixels (5.4µm vs 3.76µm)
-94% more resolution
Specifications
| Specification | QHYCCD QHY9 | QHYCCD QHY411M |
|---|---|---|
| Sensor | ||
| Type | dedicated | dedicated |
| Sensor | Kodak KAF-8300 | Sony IMX411 |
| Sensor tech | CCD | CMOS |
| Format | 4/3" | Medium format |
| Sensor size | 18.0×13.5mm | 54.0×40.0mm |
| Diagonal | 22.5mm | 67.4mm |
| Pixel size | 5.40µm | 3.76µm |
| Resolution | 3358×2536 | 14304×10748 |
| Megapixels | 8.5MP | 151.0MP |
| Color | No | No |
| Cooling | ||
| Cooled | Yes | Yes |
| Performance | ||
| Full well | 25500e⁻ | 80000e⁻ |
| Peak QE | 56% | 90% |
Advantages of QHYCCD QHY9
- Larger pixels — better low-light per-pixel sensitivity
Advantages of QHYCCD QHY411M
- Larger sensor (67.4mm vs 22.5mm diagonal) — wider field
- Finer sampling at 3.76µm pixels
- Higher resolution (151MP vs 8.5MP)
Best for — QHYCCD QHY9
- 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 — QHYCCD QHY411M
- Wide-field mosaics and full-frame telescopes
- Well-sampled deep-sky at medium focal lengths
- Long-exposure deep-sky under any sky
- Narrowband and LRGB workflows
QHYCCD QHY9 — typical FOV & scale
- On 250mm refractor (wide)FOV: 4.13° × 3.09°Scale: 4.46"/px
- On 800mm SCT reducerFOV: 1.29° × 0.97°Scale: 1.39"/px
- On 2000mm SCT nativeFOV: 0.52° × 0.39°Scale: 0.56"/px
QHYCCD QHY411M — typical FOV & scale
- On 250mm refractor (wide)FOV: 12.38° × 9.17°Scale: 3.10"/px
- On 800mm SCT reducerFOV: 3.87° × 2.87°Scale: 0.97"/px
- On 2000mm SCT nativeFOV: 1.55° × 1.15°Scale: 0.39"/px
QHYCCD QHY9 — recommended user
A strong fit for dedicated deep-sky imagers pairing with a broad range of focal lengths.
QHYCCD QHY411M — recommended user
A strong fit for dedicated deep-sky imagers pairing with wide-field refractors.