telescopecomparison · 2-way
Borg 107FL vs Sky-Watcher Esprit 100ED
Borg
107FL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Sky-Watcher
Esprit 100ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+9% focal length
+7% aperture
Specifications
| Specification | Borg 107FL | Sky-Watcher Esprit 100ED |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Apo doublet fluorite | Triplet APO |
| Aperture | 107mm | 100mm |
| Focal length | 600mm | 550mm |
| Native f/ratio | f/5.6 | f/5.5 |
| Image circle | — | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 3.5kg | 8.6kg |
Advantages of Borg 107FL
- Lighter (3.5kg vs 8.6kg) — easier to travel with
Advantages of Sky-Watcher Esprit 100ED
- Larger image circle (44mm) — supports bigger sensors
Best for — Borg 107FL
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Sky-Watcher Esprit 100ED
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
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 100ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.75° × 2.50°Scale: 1.41"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.45° × 1.64°Scale: 1.41"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.18° × 1.18°Scale: 1.41"/px
Borg 107FL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Sky-Watcher Esprit 100ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.