telescopecomparison · 2-way
ZWO FF80 APO vs Tele Vue TV-85
ZWO
FF80 APO
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Tele Vue
TV-85
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
-7% focal length
-6% aperture
Specifications
| Specification | ZWO FF80 APO | Tele Vue TV-85 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet FCD-100 | Apo doublet |
| Aperture | 80mm | 85mm |
| Focal length | 560mm | 600mm |
| Native f/ratio | f/7.0 | f/7.0 |
| Image circle | 44mm | — |
| Full-frame support | No | No |
| Physical | ||
| Weight | 4.0kg | 2.9kg |
Advantages of ZWO FF80 APO
- Larger image circle (44mm) — supports bigger sensors
Advantages of Tele Vue TV-85
- Lighter (2.9kg vs 4kg) — easier to travel with
Best for — ZWO FF80 APO
- Large emission nebulae and star clusters
Best for — Tele Vue TV-85
- Large emission nebulae and star clusters
ZWO FF80 APO — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.68° × 2.46°Scale: 1.38"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.40° × 1.61°Scale: 1.38"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.16° × 1.16°Scale: 1.38"/px
Tele Vue TV-85 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.44° × 2.29°Scale: 1.29"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.24° × 1.50°Scale: 1.29"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.08° × 1.08°Scale: 1.29"/px
ZWO FF80 APO — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Tele Vue TV-85 — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.