CHF 1'189
In stock with supplier
L'Askar 111F Flat-Field is a premium apochromatic refractor designed for astrophotographers looking for excellent image quality, native Full Frame compatibility and ease of use. With its 111 mm, its focal length of 766 mm and its focal ratio of f/6.9, It is an extremely versatile platform for deep-sky imaging.
Thanks to its design self-correcting APO quadruplet, With its ED glass element and integrated field corrector, Askar 111F delivers fine, homogeneous stars across the entire field without the need for additional flatteners or complex backfocus calculations.
Askar 111F has been developed to simplify the user experience as much as possible. Unlike many glasses that require several complementary optical accessories, this version directly integrates its own field correction system.
The image circle of 44 mm allows optimum use with full-format sensors, while maintaining excellent star quality right down to the corners.
Simply connect your camera via the supplied adapters, focus and start acquiring immediately.
This approach reduces :
The Askar 111F optical system is based on a four-lens formula comprising :
This design effectively reduces chromatic aberrations while maintaining excellent contrast and sharpness.
The tube also incorporates optimized internal diaphragms to limit stray reflections and further improve image quality.
With its 766 mm focal length, Askar 111F is particularly suitable for :
The Askar 111F is supplied with several photo adapters to ensure excellent compatibility with modern equipment:
This compatibility makes it easy to integrate with :
Askar 111F is equipped with a sturdy eyepiece holder 3-inch Rack & Pinion designed to support heavy light trains without mechanical bending.
This focuser includes :
The fine focus ensures optimum precision for astrophotography, while the rotator facilitates precise framing of celestial objects.
Despite its comfortable 111 mm opening, Askar 111F remains relatively compact and easy to transport thanks to its retractable mist shield.
The tube benefits from high-quality CNC manufacturing, with the characteristic blue and white finish of Askar's F series.
The tube also includes :
This design makes it easy to assemble :
Askar 111F isn't just for astronomy. Its optical quality and versatile focal length mean it can also be used for :
Its excellent level of optical correction makes it particularly pleasant to use in many situations.
| Features | Value |
|---|---|
| Optical type | Quadruplet APO air-spaced with ED glass |
| Opening | 111 mm |
| Focal length | 766 mm |
| Focus report | f/6.9 |
| Image circle | 44 mm Full Frame |
| Field corrector | Integrated |
| Lens holder | 3″ Rack & Pinion double speed |
| Gearbox | 1:10 |
| Rotation | 360° graduated |
| Focuser stroke | 30 mm |
| Minimum length | 664 mm |
| Maximum length | 815 mm |
| Net weight | 5.74 kg |
| Weight with collars and dovetail | 6.76 kg |
| Rear threads | M78, M54, M48 |
| Sensor compatibility | Up to Full Frame |
| Dovetail | Vixen 300 mm |
| Adapters included | M48x0.75, M54x0.75, 2″ filter thread |
The Askar 111F is an extremely attractive solution for astrophotographers who want a high-performance Full Frame scope without the complexity of external correctors and backfocus settings.
Its modern optical formula, robust mechanics and extensive compatibility make it an ideal platform for building an advanced, scalable astrophotographic setup.
With its excellent performance/price ratio, Askar 111F is a particularly coherent scope for demanding deep-sky enthusiasts.
