camera
ZWO
ASI120MC-S
1/3" · 1280×960 · Color
Popular compact guide color.
Best for
- Longer focal lengths — tighter framing on small targets
- Well-sampled deep-sky at medium focal lengths
- One-shot color — quick results, less processing
Specifications
| Sensor | |
| Type | guide-camera |
| Sensor | AR0130CS |
| Sensor tech | CMOS |
| Format | 1/3" |
| Sensor size | 4.8×3.6mm |
| Diagonal | 6.0mm |
| Pixel size | 3.75µm |
| Resolution | 1280×960 |
| Megapixels | 1.2MP |
| Color | Yes |
| Cooling & performance | |
| Cooled | No |
| Full well | 13000e⁻ |
| Peak QE | 50% |
Typical FOV & image scale
On 250mm refractor (wide)
FOV 1.10° × 0.83°
Scale 3.09″/px
On 800mm SCT reducer
FOV 0.34° × 0.26°
Scale 0.97″/px
On 2000mm SCT native
FOV 0.14° × 0.10°
Scale 0.39″/px
Typical targets
- Messier M82 — Cigar GalaxyGalaxy · 11.2′
- Messier M51 — Whirlpool GalaxyGalaxy · 11.2′
- IC IC 5146 — Cocoon NebulaEmission Nebula · 12′
- Messier M9 — Globular Cluster M9Globular Cluster · 12′
- Messier M30 — Globular Cluster M30Globular Cluster · 12′
- Messier M36 — Pinwheel ClusterOpen Cluster · 12′
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