telescopecomparison · 2-way
ZWO FF90 APO vs Astro-Physics 92mm f/6.65 Stowaway
ZWO
FF90 APO
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Astro-Physics
92mm f/6.65 Stowaway
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Specifications
| Specification | ZWO FF90 APO | Astro-Physics 92mm f/6.65 Stowaway |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo quadruplet ED | Apo triplet |
| Aperture | 90mm | 92mm |
| Focal length | 609mm | 612mm |
| Native f/ratio | f/6.8 | f/6.7 |
| Image circle | 44mm | — |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 3.9kg | 3.2kg |
Advantages of ZWO FF90 APO
- Larger image circle (44mm) — supports bigger sensors
Advantages of Astro-Physics 92mm f/6.65 Stowaway
- Lighter (3.2kg vs 3.92kg) — easier to travel with
Best for — ZWO FF90 APO
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Astro-Physics 92mm f/6.65 Stowaway
- Large emission nebulae and star clusters
ZWO FF90 APO — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.39° × 2.26°Scale: 1.27"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.21° × 1.48°Scale: 1.27"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.06° × 1.06°Scale: 1.27"/px
Astro-Physics 92mm f/6.65 Stowaway — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.37° × 2.25°Scale: 1.27"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.20° × 1.47°Scale: 1.27"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.06° × 1.06°Scale: 1.27"/px
ZWO FF90 APO — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Astro-Physics 92mm f/6.65 Stowaway — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
