telescopecomparison · 2-way
Astro-Physics 155mm f/6 StarFire CS vs William Optics FLT 132
Astro-Physics
155mm f/6 StarFire CS
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics
FLT 132
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+17% aperture
Faster by 1.0 f-stops
Specifications
| Specification | Astro-Physics 155mm f/6 StarFire CS | William Optics FLT 132 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Christen Superachromat (4-element) | Apo triplet FPL-53 |
| Aperture | 155mm | 132mm |
| Focal length | 930mm | 925mm |
| Native f/ratio | f/6.0 | f/7.0 |
| Image circle | 64mm | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 10.9kg | 7.9kg |
Advantages of Astro-Physics 155mm f/6 StarFire CS
- 17% more light-gathering aperture
- Faster optics at f/6 vs f/7
- Larger image circle (64mm) — supports bigger sensors
Advantages of William Optics FLT 132
- Lighter (7.9kg vs 10.9kg) — easier to travel with
Best for — Astro-Physics 155mm f/6 StarFire CS
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — William Optics FLT 132
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Astro-Physics 155mm f/6 StarFire CS — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.22° × 1.48°Scale: 0.83"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.45° × 0.97°Scale: 0.83"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.70° × 0.70°Scale: 0.83"/px
William Optics FLT 132 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.23° × 1.49°Scale: 0.84"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.46° × 0.97°Scale: 0.84"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.70° × 0.70°Scale: 0.84"/px
Astro-Physics 155mm f/6 StarFire CS — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics FLT 132 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
