telescope
Askar
FRA600
108mm Petzval Quintuplet APO · 600mm f/5.6
Quintuplet Petzval astrograph; 60mm image circle.
Best for
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | Refractor |
| Optical design | Petzval Quintuplet APO |
| Aperture | 108mm |
| Focal length | 600mm |
| Native f/ratio | f/5.6 |
| Image circle | 60mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 7.8kg |
Typical FOV & image 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
Recommended accessories
- Askar FRA 0.7x Reducerreducer · 0.7× focal lengthmanufacturer supported
Typical targets
- Messier M17 — Omega NebulaEmission Nebula · 46′
- NGC NGC 1893 — Emission Nebula NGC 1893Emission Nebula · 45′
- NGC NGC 6357 — Lobster NebulaEmission Nebula · 50′
- IC IC 443 — Jellyfish NebulaSupernova Remnant · 50′
- Messier M48 — Open Cluster M48Open Cluster · 54′
- NGC NGC 2070 — Tarantula NebulaEmission Nebula · 40′
Recommended cameras
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