telescopecomparison · 2-way
Tele Vue TV-76 vs Tele Vue TV-85
Tele Vue
TV-85
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
-20% focal length
-11% aperture
Faster by 0.7 f-stops
Specifications
| Specification | Tele Vue TV-76 | Tele Vue TV-85 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet | Apo doublet |
| Aperture | 76mm | 85mm |
| Focal length | 480mm | 600mm |
| Native f/ratio | f/6.3 | f/7.0 |
| Image circle | — | — |
| Full-frame support | No | No |
| Physical | ||
| Weight | 2.3kg | 2.9kg |
Advantages of Tele Vue TV-76
- Wider field — 480mm vs 600mm focal length
- Faster optics at f/6.3 vs f/7
- Lighter (2.3kg vs 2.9kg) — easier to travel with
Advantages of Tele Vue TV-85
- Tighter framing — 600mm vs 480mm focal length
- 12% more light-gathering aperture
Best for — Tele Vue TV-76
- Large emission nebulae and star clusters
Best for — Tele Vue TV-85
- Large emission nebulae and star clusters
Tele Vue TV-76 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.30° × 2.86°Scale: 1.62"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.81° × 1.87°Scale: 1.62"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.35° × 1.35°Scale: 1.62"/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
Tele Vue TV-76 — recommended user
Best suited for beginners and wide-field enthusiasts 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.