telescopecomparison · 2-way
Takahashi Epsilon-180ED vs Takahashi FSQ-106EDX4
Takahashi
Epsilon-180ED
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.
Takahashi
FSQ-106EDX4
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-6% focal length
+70% aperture
Faster by 2.2 f-stops
Specifications
| Specification | Takahashi Epsilon-180ED | Takahashi FSQ-106EDX4 |
|---|---|---|
| Optics | ||
| Type | astrograph | Refractor |
| Optical design | Hyperbolic Newtonian | Petzval APO |
| Aperture | 180mm | 106mm |
| Focal length | 500mm | 530mm |
| Native f/ratio | f/2.8 | f/5.0 |
| Image circle | 44mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 12.5kg | 7.5kg |
Advantages of Takahashi Epsilon-180ED
- 70% more light-gathering aperture
- Faster optics at f/2.8 vs f/5
Advantages of Takahashi FSQ-106EDX4
- Larger image circle (88mm) — supports bigger sensors
- Lighter (7.5kg vs 12.5kg) — easier to travel with
Best for — Takahashi Epsilon-180ED
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Best for — Takahashi FSQ-106EDX4
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Takahashi Epsilon-180ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.13° × 2.75°Scale: 1.55"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.69° × 1.80°Scale: 1.55"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.29° × 1.29°Scale: 1.55"/px
Takahashi FSQ-106EDX4 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.89° × 2.59°Scale: 1.46"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.54° × 1.70°Scale: 1.46"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.22° × 1.22°Scale: 1.46"/px
Takahashi Epsilon-180ED — recommended user
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.
Takahashi FSQ-106EDX4 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.