telescopecomparison · 2-way
Astro-Physics 130mm f/6.3 StarFire GTX vs Sky-Watcher Esprit 120EDX
Astro-Physics
130mm f/6.3 StarFire GTX
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher
Esprit 120EDX
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+8% aperture
Faster by 0.7 f-stops
Specifications
| Specification | Astro-Physics 130mm f/6.3 StarFire GTX | Sky-Watcher Esprit 120EDX |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo triplet | Apo triplet |
| Aperture | 130mm | 120mm |
| Focal length | 819mm | 840mm |
| Native f/ratio | f/6.3 | f/7.0 |
| Image circle | — | — |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 8.2kg | 10.8kg |
Advantages of Astro-Physics 130mm f/6.3 StarFire GTX
- Faster optics at f/6.3 vs f/7
- Lighter (8.2kg vs 10.84kg) — easier to travel with
Advantages of Sky-Watcher Esprit 120EDX
Closely matched on the compared specs.
Best for — Astro-Physics 130mm f/6.3 StarFire GTX
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Sky-Watcher Esprit 120EDX
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Astro-Physics 130mm f/6.3 StarFire GTX — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.52° × 1.68°Scale: 0.95"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.64° × 1.10°Scale: 0.95"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.79° × 0.79°Scale: 0.95"/px
Sky-Watcher Esprit 120EDX — 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
Astro-Physics 130mm f/6.3 StarFire GTX — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher Esprit 120EDX — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
