telescopecomparison · 2-way
Takahashi FC-100DL vs Askar SQA106
Takahashi
FC-100DL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Askar
SQA106
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+55% focal length
-6% aperture
Slower by 3.5 f-stops
Specifications
| Specification | Takahashi FC-100DL | Askar SQA106 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet fluorite | Quadruplet astrograph FPL-51 |
| Aperture | 100mm | 106mm |
| Focal length | 900mm | 580mm |
| Native f/ratio | f/9.0 | f/5.5 |
| Image circle | 44mm | 60mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 3.3kg | 6.5kg |
Advantages of Takahashi FC-100DL
- Tighter framing — 900mm vs 580mm focal length
- Lighter (3.3kg vs 6.5kg) — easier to travel with
Advantages of Askar SQA106
- Wider field — 580mm vs 900mm focal length
- Faster optics at f/5.5 vs f/9
- Larger image circle (60mm) — supports bigger sensors
Best for — Takahashi FC-100DL
- Medium-sized galaxies and planetary nebulae
- High-resolution long-exposure work
Best for — Askar SQA106
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Takahashi FC-100DL — 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
Askar SQA106 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.56° × 2.37°Scale: 1.34"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.32° × 1.55°Scale: 1.34"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.12° × 1.12°Scale: 1.34"/px
Takahashi FC-100DL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Askar SQA106 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.