telescopecomparison · 2-way
SharpStar 100QII vs Takahashi FSQ-106EDX4
SharpStar
100QII
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi
FSQ-106EDX4
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-6% aperture
Slower by 0.5 f-stops
Specifications
| Specification | SharpStar 100QII | Takahashi FSQ-106EDX4 |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Quadruplet astrograph | Petzval APO |
| Aperture | 100mm | 106mm |
| Focal length | 550mm | 530mm |
| Native f/ratio | f/5.5 | f/5.0 |
| Image circle | 44mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 5.5kg | 7.5kg |
Advantages of SharpStar 100QII
- Lighter (5.5kg vs 7.5kg) — easier to travel with
Advantages of Takahashi FSQ-106EDX4
- Faster optics at f/5 vs f/5.5
- Larger image circle (88mm) — supports bigger sensors
Best for — SharpStar 100QII
- Large emission nebulae and star clusters
- 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
SharpStar 100QII — 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
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
SharpStar 100QII — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi FSQ-106EDX4 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.