telescope
Askar
120APO
120mm Triplet APO · 840mm f/7.0
120mm FPL-55 triplet APO; pairs with reducer or flattener for imaging.
Best for
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | Refractor |
| Optical design | Triplet APO |
| Aperture | 120mm |
| Focal length | 840mm |
| Native f/ratio | f/7.0 |
| Image circle | 44mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 8.5kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 2.46° × 1.64°
Scale 0.92″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 1.60° × 1.07°
Scale 0.92″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 0.77° × 0.77°
Scale 0.92″/px
Typical targets
- Messier M16 — Eagle NebulaEmission Nebula · 35′
- NGC NGC 281 — Pacman NebulaEmission Nebula · 35′
- Messier M34 — Open Cluster M34Open Cluster · 35′
- Messier M25 — Open Cluster M25Open Cluster · 32′
- Messier M22 — Great Sagittarius ClusterGlobular Cluster · 32′
- Messier M39 — Open Cluster M39Open Cluster · 32′
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Source: www.askarlens.com