telescope
Vixen
SD115S
115mm Apo doublet SD · 890mm f/7.7
SD doublet apo.
Best for
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | refractor |
| Optical design | Apo doublet SD |
| Aperture | 115mm |
| Focal length | 890mm |
| Native f/ratio | f/7.7 |
| Image circle | 44mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 4.8kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 2.32° × 1.55°
Scale 0.87″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 1.51° × 1.01°
Scale 0.87″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 0.73° × 0.73°
Scale 0.87″/px
Typical targets
- Messier M25 — Open Cluster M25Open Cluster · 32′
- Messier M22 — Great Sagittarius ClusterGlobular Cluster · 32′
- Messier M39 — Open Cluster M39Open Cluster · 32′
- NGC NGC 55 — Sculptor FilamentGalaxy · 32′
- Messier M47 — Open Cluster M47Open Cluster · 30′
- Messier M67 — Open Cluster M67Open Cluster · 30′
Recommended cameras
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