telescope
Askar
151PHQ
151mm Petzval quintuplet FPL-51 · 1057mm f/7.0
Large quintuplet.
Best for
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | refractor |
| Optical design | Petzval quintuplet FPL-51 |
| Aperture | 151mm |
| Focal length | 1057mm |
| Native f/ratio | f/7.0 |
| Image circle | 60mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 15.5kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 1.95° × 1.30°
Scale 0.73″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 1.27° × 0.85°
Scale 0.73″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 0.61° × 0.61°
Scale 0.73″/px
Recommended accessories
- Askar ASKAR 1.0x Flattener for PHQflattener · 1× focal lengthmanufacturer supported
Typical targets
- 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′
- Messier M4 — Globular Cluster M4Globular Cluster · 26′
- NGC NGC 5128 — Centaurus AGalaxy · 26′
Recommended cameras
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