telescope
William Optics
FLT 156
156mm Apo triplet FPL-53 · 1085mm f/7.0
Large premium triplet.
Best for
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | refractor |
| Optical design | Apo triplet FPL-53 |
| Aperture | 156mm |
| Focal length | 1085mm |
| Native f/ratio | f/7.0 |
| Image circle | 52mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 11.5kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 1.90° × 1.27°
Scale 0.71″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 1.24° × 0.83°
Scale 0.71″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 0.60° × 0.60°
Scale 0.71″/px
Typical targets
- Messier M4 — Globular Cluster M4Globular Cluster · 26′
- NGC NGC 5128 — Centaurus AGalaxy · 26′
- Messier M81 — Bode's GalaxyGalaxy · 26.9′
- Messier M23 — Open Cluster M23Open Cluster · 27′
- Messier M46 — Open Cluster M46Open Cluster · 27′
- NGC NGC 253 — Sculptor GalaxyGalaxy · 27′
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