telescope
ZWO
FF80 APO
80mm Apo doublet FCD-100 · 560mm f/7.0
ZWO apo doublet.
Best for
- Large emission nebulae and star clusters
Specifications
| Optics | |
| Type | refractor |
| Optical design | Apo doublet FCD-100 |
| Aperture | 80mm |
| Focal length | 560mm |
| Native f/ratio | f/7.0 |
| Image circle | 44mm |
| Full-frame support | No |
| Physical | |
| Weight | 4.0kg |
Typical FOV & image 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
Typical targets
- NGC NGC 6357 — Lobster NebulaEmission Nebula · 50′
- IC IC 443 — Jellyfish NebulaSupernova Remnant · 50′
- Messier M48 — Open Cluster M48Open Cluster · 54′
- Messier M17 — Omega NebulaEmission Nebula · 46′
- NGC NGC 1893 — Emission Nebula NGC 1893Emission Nebula · 45′
- IC IC 434 — Horsehead NebulaEmission Nebula · 60′
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