Eyepiece APO Quintuplet 72mm f/5,6 FRA400 with Rotating Eyepiece - Askar
Eyepiece APO Quintuplet 72mm f/5,6 FRA400 with Rotating Eyepiece - Askar
Tilgjengelig på 3-5 uker
Prix habituel
€1.345,00 EUR
Prix habituel
Prix promotionnel
€1.345,00 EUR
Prix unitaire
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Discover the Askar FRA400 astronomical eyepiece, a quintuplet apochromatic refractor of 72mm, ideal for astrophotography. With its precise construction and high-quality components, this eyepiece offers clear images without chromatic aberration.
Features:
- Aperture: 72 mm
- Focal length: 400 mm
- Focal ratio: f/5.6
- Design: Quintuplet apochromat with 5 elements and two ED lenses
- Image circle: 44 mm with full illumination and correction
- Working distance: 140 mm
- Eyepiece holder: Crayford and stable 3" with 360° rotation
- Receptacles: 2" and 1.25" with M68x1 external thread
- Included adapter: M68 to M48x0.75
- Dovetail bar: GP/EQ5 style with connection for photo tripod and transport handle
Advantages:
- Superior correction of chromatic aberration thanks to two ED glasses
- Flat field up to 44 mm diagonal without additional flatteners needed
- High-precision optics and mechanics for optimal astrophotography performance
- Robust and rotatable eyepiece holder for precise framing
- Possibility to increase speed to f/3.9 with an optional corrector/reducer
Compatibility:
- Compatible with various accessories via the M68x1 thread and 2" and 1.25" receptacles
Tips and Tricks:
- Use the AS72RED corrector/reducer to achieve a focal ratio of f/3.9 and reduce exposure time by half
The Askar FRA400 eyepiece is a perfect choice for demanding astrophotographers looking for high-quality optics at an affordable price.