telescopecomparison · 2-way
Astro-Physics 190mm f/6 StarFire CS vs Takahashi TOA-150B
Astro-Physics
190mm f/6 StarFire CS
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi
TOA-150B
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
+27% aperture
Faster by 1.3 f-stops
Specifications
| Specification | Astro-Physics 190mm f/6 StarFire CS | Takahashi TOA-150B |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Christen Superachromat (4-element) | Apo triplet |
| Aperture | 190mm | 150mm |
| Focal length | 1140mm | 1100mm |
| Native f/ratio | f/6.0 | f/7.3 |
| Image circle | 64mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 17.7kg | 13.5kg |
Advantages of Astro-Physics 190mm f/6 StarFire CS
- 27% more light-gathering aperture
- Faster optics at f/6 vs f/7.3
Advantages of Takahashi TOA-150B
- Larger image circle (88mm) — supports bigger sensors
- Lighter (13.5kg vs 17.7kg) — easier to travel with
Best for — Astro-Physics 190mm f/6 StarFire CS
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Takahashi TOA-150B
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Astro-Physics 190mm f/6 StarFire CS — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.81° × 1.21°Scale: 0.68"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.18° × 0.79°Scale: 0.68"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.57° × 0.57°Scale: 0.68"/px
Takahashi TOA-150B — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.88° × 1.25°Scale: 0.71"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.22° × 0.82°Scale: 0.71"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.59° × 0.59°Scale: 0.71"/px
Astro-Physics 190mm f/6 StarFire CS — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi TOA-150B — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
