telescope
Takahashi
TSA-120
120mm Triplet APO · 900mm f/7.5
Triplet APO; use flattener/reducer for imaging.
Best for
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | Refractor |
| Optical design | Triplet APO |
| Aperture | 120mm |
| Focal length | 900mm |
| Native f/ratio | f/7.5 |
| Image circle | 44mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 7.5kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 2.29° × 1.53°
Scale 0.86″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 1.50° × 1.00°
Scale 0.86″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 0.72° × 0.72°
Scale 0.86″/px
Recommended accessories
- Takahashi TOA/TSA 0.75x Reducerreducer · 0.75× focal lengthmanufacturer supported
- Takahashi TOA/TSA Flattener-67flattener · 1× focal lengthmanufacturer supported
- Tele Vue Powermate 2xfocal_extender · 2× focal lengthunknown
Typical targets
- Messier M25 — Open Cluster M25Open Cluster · 32′
- Messier M22 — Great Sagittarius ClusterGlobular Cluster · 32′
- Messier M39 — Open Cluster M39Open Cluster · 32′
- NGC NGC 55 — Sculptor FilamentGalaxy · 32′
- Messier M47 — Open Cluster M47Open Cluster · 30′
- Messier M67 — Open Cluster M67Open Cluster · 30′
Recommended cameras
28.4mm sensor · 4.78µm px · cooled
Compare pairing28.3mm sensor · 3.76µm px · cooled
Compare pairing28.3mm sensor · 3.76µm px · cooled
Compare pairing