telescope
Askar
FRA400
72mm Petzval Quintuplet APO · 400mm f/5.6
Quintuplet Petzval astrograph.
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Product specifications can change. Please verify specifications and compatibility with the manufacturer or retailer before purchasing.
Best for
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | Refractor |
| Optical design | Petzval Quintuplet APO |
| Aperture | 72mm |
| Focal length | 400mm |
| Native f/ratio | f/5.6 |
| Image circle | 44mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 3.9kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 5.16° × 3.44°
Scale 1.94″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 3.37° × 2.25°
Scale 1.94″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 1.62° × 1.62°
Scale 1.94″/px
Recommended accessories
Typical targets
- M33 — Triangulum GalaxyGalaxy · 73′Plan this target
- IC 2944 — Running Chicken NebulaEmission Nebula · 75′Plan this target
- IC 5070 — Pelican NebulaEmission Nebula · 80′Plan this target
- M7 — Ptolemy's ClusterOpen Cluster · 80′Plan this target
- NGC 2237 — Rosette NebulaEmission Nebula · 80′Plan this target
- IC 434 — Horsehead NebulaEmission Nebula · 60′Plan this target
