telescopecomparison · 2-way
Explore Scientific ED127 FCD-100 vs Takahashi TSA-120
Explore Scientific
ED127 FCD-100
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi
TSA-120
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+6% focal length
+6% aperture
Specifications
| Specification | Explore Scientific ED127 FCD-100 | Takahashi TSA-120 |
|---|---|---|
| Optics | ||
| Type | Refractor | Refractor |
| Optical design | Triplet APO | Triplet APO |
| Aperture | 127mm | 120mm |
| Focal length | 952mm | 900mm |
| Native f/ratio | f/7.5 | f/7.5 |
| Image circle | 40mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 8.6kg | 7.5kg |
Advantages of Explore Scientific ED127 FCD-100
Closely matched on the compared specs.
Advantages of Takahashi TSA-120
Closely matched on the compared specs.
Best for — Explore Scientific ED127 FCD-100
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Takahashi TSA-120
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Explore Scientific ED127 FCD-100 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.17° × 1.44°Scale: 0.81"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.41° × 0.94°Scale: 0.81"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.68° × 0.68°Scale: 0.81"/px
Takahashi TSA-120 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.29° × 1.53°Scale: 0.86"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.50° × 1.00°Scale: 0.86"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.72° × 0.72°Scale: 0.86"/px
Explore Scientific ED127 FCD-100 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi TSA-120 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.