telescopecomparison · 2-way
Tele Vue TV-76 vs Tele Vue NP127fli
Tele Vue
NP127fli
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-27% focal length
-40% aperture
Slower by 1.1 f-stops
Specifications
| Specification | Tele Vue TV-76 | Tele Vue NP127fli |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet | Nagler-Petzval |
| Aperture | 76mm | 127mm |
| Focal length | 480mm | 660mm |
| Native f/ratio | f/6.3 | f/5.2 |
| Image circle | — | 52mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 2.3kg | 9.5kg |
Advantages of Tele Vue TV-76
- Wider field — 480mm vs 660mm focal length
- Lighter (2.3kg vs 9.5kg) — easier to travel with
Advantages of Tele Vue NP127fli
- Tighter framing — 660mm vs 480mm focal length
- 67% more light-gathering aperture
- Faster optics at f/5.2 vs f/6.3
- Larger image circle (52mm) — supports bigger sensors
Best for — Tele Vue TV-76
- Large emission nebulae and star clusters
Best for — Tele Vue NP127fli
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Tele Vue TV-76 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.30° × 2.86°Scale: 1.62"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.81° × 1.87°Scale: 1.62"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.35° × 1.35°Scale: 1.62"/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
Tele Vue TV-76 — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Tele Vue NP127fli — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.