Askar 107PHQ Quadruplet Flatfield APO Astrograph
2 556,00 €
107mm f/7 quadruplet flatfield astrograph — the first long-focal-ratio PHQ. Built-in flattener for sharp stars across full-frame sensors.
Description
<![CDATA[The Askar 107PHQ is a 107mm f/7 quadruplet flatfield astrograph — the first long-focal-ratio model in Askar's PHQ family. Its built-in field flattener means no external flattener is needed: attach your imaging camera, focus, and start capturing.
The four-element optical design with ED glass provides outstanding chromatic aberration control and delivers sharp, round stars from center to edge. At 749mm focal length, the 107PHQ offers excellent resolution for galaxies, planetary nebulae, and other small deep-sky targets while remaining manageable on mid-size mounts.
Whether you're just starting in astrophotography or an experienced imager, the 107PHQ simplifies your setup by eliminating backfocus calculations and adapter stacks. Each unit is individually tested to ensure optical quality.
Key Features
- Built-in field flattener — no external flattener needed
- Quadruplet ED glass design for exceptional color correction
- 107mm aperture, 749mm focal length (f/7)
- Each unit individually optically tested
- Precision dual-speed focuser
- Flat field across full-frame sensors
Specifications
| Aperture | 107 mm |
|---|---|
| Focal Length | 749 mm |
| Focal Ratio | f/7 |
| Optical Design | Quadruplet with ED glass |
| Field Flattener | Built-in |
| Focuser | Dual-speed |
| Brand | Askar |
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Explore these guides from our Astro Wiki to learn more about this type of equipment:
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