telescopecomparison · 2-way
Astro-Physics 110mm f/6 StarFire GTX vs William Optics Pleiades 111
Astro-Physics
110mm f/6 StarFire GTX
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics
Pleiades 111
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+25% focal length
Slower by 1.2 f-stops
Specifications
| Specification | Astro-Physics 110mm f/6 StarFire GTX | William Optics Pleiades 111 |
|---|---|---|
| Optics | ||
| Type | refractor | astrograph |
| Optical design | Apo triplet Super-ED | Astrograph (7-element) |
| Aperture | 110mm | 111mm |
| Focal length | 660mm | 528mm |
| Native f/ratio | f/6.0 | f/4.8 |
| Image circle | 50mm | 45mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 5.5kg | 8.0kg |
Advantages of Astro-Physics 110mm f/6 StarFire GTX
- Tighter framing — 660mm vs 528mm focal length
- Lighter (5.45kg vs 7.95kg) — easier to travel with
Advantages of William Optics Pleiades 111
- Wider field — 528mm vs 660mm focal length
- Faster optics at f/4.8 vs f/6
Best for — Astro-Physics 110mm f/6 StarFire GTX
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — William Optics Pleiades 111
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Astro-Physics 110mm f/6 StarFire GTX — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.13° × 2.08°Scale: 1.18"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.04° × 1.36°Scale: 1.18"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.98° × 0.98°Scale: 1.18"/px
William Optics Pleiades 111 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.91° × 2.60°Scale: 1.47"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.55° × 1.70°Scale: 1.47"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.23° × 1.23°Scale: 1.47"/px
Astro-Physics 110mm f/6 StarFire GTX — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics Pleiades 111 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
