telescopecomparison · 2-way
Takahashi TSA-120 vs Tele Vue NP127fli
Takahashi
TSA-120
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Tele Vue
NP127fli
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+36% focal length
-6% aperture
Slower by 2.3 f-stops
Specifications
| Specification | Takahashi TSA-120 | Tele Vue NP127fli |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Triplet APO | Nagler-Petzval |
| Aperture | 120mm | 127mm |
| Focal length | 900mm | 660mm |
| Native f/ratio | f/7.5 | f/5.2 |
| Image circle | 44mm | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 7.5kg | 9.5kg |
Advantages of Takahashi TSA-120
- Tighter framing — 900mm vs 660mm focal length
- Lighter (7.5kg vs 9.5kg) — easier to travel with
Advantages of Tele Vue NP127fli
- Wider field — 660mm vs 900mm focal length
- Faster optics at f/5.2 vs f/7.5
- Larger image circle (52mm) — supports bigger sensors
Best for — Takahashi TSA-120
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Tele Vue NP127fli
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Takahashi TSA-120 — typical FOV & 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
Tele Vue NP127fli — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.13° × 2.08°Scale: 1.18"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.04° × 1.36°Scale: 1.18"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.98° × 0.98°Scale: 1.18"/px
Takahashi TSA-120 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Tele Vue NP127fli — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
