telescopecomparison · 2-way
Sky-Watcher Evostar 72ED vs Sky-Watcher Evostar 80ED
Sky-Watcher
Evostar 72ED
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Sky-Watcher
Evostar 80ED
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
-30% focal length
-10% aperture
Faster by 1.7 f-stops
Specifications
| Specification | Sky-Watcher Evostar 72ED | Sky-Watcher Evostar 80ED |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet FPL-53 | Apo doublet FPL-53 |
| Aperture | 72mm | 80mm |
| Focal length | 420mm | 600mm |
| Native f/ratio | f/5.8 | f/7.5 |
| Image circle | 44mm | 44mm |
| Full-frame support | No | No |
| Physical | ||
| Weight | 2.4kg | 3.8kg |
Advantages of Sky-Watcher Evostar 72ED
- Wider field — 420mm vs 600mm focal length
- Faster optics at f/5.8 vs f/7.5
- Lighter (2.4kg vs 3.8kg) — easier to travel with
Advantages of Sky-Watcher Evostar 80ED
- Tighter framing — 600mm vs 420mm focal length
- 11% more light-gathering aperture
Best for — Sky-Watcher Evostar 72ED
- Large emission nebulae and star clusters
Best for — Sky-Watcher Evostar 80ED
- Large emission nebulae and star clusters
Sky-Watcher Evostar 72ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.91° × 3.27°Scale: 1.85"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 3.21° × 2.14°Scale: 1.85"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.54° × 1.54°Scale: 1.85"/px
Sky-Watcher Evostar 80ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.44° × 2.29°Scale: 1.29"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.24° × 1.50°Scale: 1.29"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.08° × 1.08°Scale: 1.29"/px
Sky-Watcher Evostar 72ED — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Sky-Watcher Evostar 80ED — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.