telescopecomparison · 2-way
Sky-Watcher Esprit 120ED vs Tele Vue NP127fli
Sky-Watcher
Esprit 120ED
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
+27% focal length
-6% aperture
Slower by 1.8 f-stops
Specifications
| Specification | Sky-Watcher Esprit 120ED | Tele Vue NP127fli |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Triplet APO | Nagler-Petzval |
| Aperture | 120mm | 127mm |
| Focal length | 840mm | 660mm |
| Native f/ratio | f/7.0 | f/5.2 |
| Image circle | 44mm | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 11.5kg | 9.5kg |
Advantages of Sky-Watcher Esprit 120ED
- Tighter framing — 840mm vs 660mm focal length
Advantages of Tele Vue NP127fli
- Wider field — 660mm vs 840mm focal length
- Faster optics at f/5.2 vs f/7
- Larger image circle (52mm) — supports bigger sensors
- Lighter (9.5kg vs 11.5kg) — easier to travel with
Best for — Sky-Watcher Esprit 120ED
- 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
Sky-Watcher Esprit 120ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.46° × 1.64°Scale: 0.92"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.60° × 1.07°Scale: 0.92"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.77° × 0.77°Scale: 0.92"/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
Sky-Watcher Esprit 120ED — 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.
