telescopecomparison · 2-way
Takahashi TSA-120 vs Orion EON 130mm ED Triplet
Takahashi
TSA-120
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Orion
EON 130mm ED Triplet
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-8% aperture
Slower by 0.5 f-stops
Specifications
| Specification | Takahashi TSA-120 | Orion EON 130mm ED Triplet |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Triplet APO | Apo triplet FPL-53 |
| Aperture | 120mm | 130mm |
| Focal length | 900mm | 910mm |
| Native f/ratio | f/7.5 | f/7.0 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 7.5kg | 7.7kg |
Advantages of Takahashi TSA-120
Closely matched on the compared specs.
Advantages of Orion EON 130mm ED Triplet
- Faster optics at f/7 vs f/7.5
Best for — Takahashi TSA-120
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Orion EON 130mm ED Triplet
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
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
Orion EON 130mm ED Triplet — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.27° × 1.51°Scale: 0.85"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.48° × 0.99°Scale: 0.85"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.71° × 0.71°Scale: 0.85"/px
Takahashi TSA-120 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Orion EON 130mm ED Triplet — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.