cameracomparison · 2-way
QHYCCD QHY9 vs QHYCCD QHY5L-II-M
QHYCCD
QHY5L-II-M
A strong fit for photographers stepping into astro pairing with longer focal lengths where framing is tight.
Key differences
275% larger sensor
Larger pixels (5.4µm vs 3.75µm)
591% more resolution
Cooled sensor
Specifications
| Specification | QHYCCD QHY9 | QHYCCD QHY5L-II-M |
|---|---|---|
| Sensor | ||
| Type | dedicated | guide-camera |
| Sensor | Kodak KAF-8300 | Aptina AR0130 |
| Sensor tech | CCD | CMOS |
| Format | 4/3" | 1/3" |
| Sensor size | 18.0×13.5mm | 4.8×3.6mm |
| Diagonal | 22.5mm | 6.0mm |
| Pixel size | 5.40µm | 3.75µm |
| Resolution | 3358×2536 | 1280×960 |
| Megapixels | 8.5MP | 1.2MP |
| Color | No | No |
| Cooling | ||
| Cooled | Yes | No |
| Performance | ||
| Full well | 25500e⁻ | 13000e⁻ |
| Peak QE | 56% | 80% |
Advantages of QHYCCD QHY9
- Larger sensor (22.5mm vs 6mm diagonal) — wider field
- Larger pixels — better low-light per-pixel sensitivity
- Higher resolution (8.5MP vs 1.23MP)
- Regulated cooling for long exposures
Advantages of QHYCCD QHY5L-II-M
- Finer sampling at 3.75µm pixels
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 QHY5L-II-M
- Longer focal lengths — tighter framing on small targets
- Well-sampled deep-sky at medium focal lengths
- 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 QHY5L-II-M — typical FOV & scale
- On 250mm refractor (wide)FOV: 1.10° × 0.83°Scale: 3.09"/px
- On 800mm SCT reducerFOV: 0.34° × 0.26°Scale: 0.97"/px
- On 2000mm SCT nativeFOV: 0.14° × 0.10°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 QHY5L-II-M — recommended user
A strong fit for photographers stepping into astro pairing with longer focal lengths where framing is tight.