telescopecomparison · 2-way
William Optics GT 102 vs Explore Scientific ED102 FCD-100
William Optics
GT 102
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Explore Scientific
ED102 FCD-100
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Specifications
| Specification | William Optics GT 102 | Explore Scientific ED102 FCD-100 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo triplet FPL-53 | Apo triplet FCD-100 |
| Aperture | 102mm | 102mm |
| Focal length | 703mm | 714mm |
| Native f/ratio | f/6.9 | f/7.0 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 5.6kg | 5.5kg |
Advantages of William Optics GT 102
Closely matched on the compared specs.
Advantages of Explore Scientific ED102 FCD-100
Closely matched on the compared specs.
Best for — William Optics GT 102
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Explore Scientific ED102 FCD-100
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
William Optics GT 102 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.93° × 1.96°Scale: 1.10"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.92° × 1.28°Scale: 1.10"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.92° × 0.92°Scale: 1.10"/px
Explore Scientific ED102 FCD-100 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.89° × 1.93°Scale: 1.09"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.89° × 1.26°Scale: 1.09"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.91° × 0.91°Scale: 1.09"/px
William Optics GT 102 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Explore Scientific ED102 FCD-100 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
