telescopecomparison · 2-way
Sky-Watcher Esprit 150ED vs Borg 107FL
Sky-Watcher
Esprit 150ED
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Borg
107FL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+75% focal length
+40% aperture
Slower by 1.4 f-stops
Specifications
| Specification | Sky-Watcher Esprit 150ED | Borg 107FL |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Triplet APO | Apo doublet fluorite |
| Aperture | 150mm | 107mm |
| Focal length | 1050mm | 600mm |
| Native f/ratio | f/7.0 | f/5.6 |
| Image circle | 44mm | — |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 17.0kg | 3.5kg |
Advantages of Sky-Watcher Esprit 150ED
- Tighter framing — 1050mm vs 600mm focal length
- 40% more light-gathering aperture
- Larger image circle (44mm) — supports bigger sensors
Advantages of Borg 107FL
- Wider field — 600mm vs 1050mm focal length
- Faster optics at f/5.6 vs f/7
- Lighter (3.5kg vs 17kg) — easier to travel with
Best for — Sky-Watcher Esprit 150ED
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Borg 107FL
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Sky-Watcher Esprit 150ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.96° × 1.31°Scale: 0.74"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.28° × 0.86°Scale: 0.74"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.62° × 0.62°Scale: 0.74"/px
Borg 107FL — 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 Esprit 150ED — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Borg 107FL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.