Askar FRA400 72mm f/5.6 Quintuplet Astrograph with f/3.9 Reducer – Excellent Condition
The Askar FRA400 is a premium 72mm Petzval astrograph engineered to deliver pinpoint stars across the entire field without the need for a separate field flattener. With its native 400mm focal length and fast f/5.6 focal ratio, it's an outstanding choice for wide-field deep-sky imaging, including nebulae, large galaxies, and star clusters.
This package also includes the Askar 0.7× Reducer, transforming the telescope into an ultra-fast 280mm f/3.9 astrograph. The reducer significantly shortens exposure times while providing an even wider field of view—ideal for capturing expansive emission nebulae, dark nebulae, and sweeping Milky Way landscapes.
Features:
- 72mm aperture
- 400mm focal length
- Native f/5.6 focal ratio
- 280mm f/3.9 with included 0.7× reducer
- Quintuplet Petzval optical design
- Built-in flat field – no flattener required in native configuration
- Large illuminated image circle
- Precision dual-speed focuser
- Rotating focuser for easy framing
- CNC-machined aluminum construction
Included:
- Askar FRA400 OTA
- Askar 0.7× Reducer (f/3.9)
- Tube rings
- Dovetail plate
- Retractable dew shield
- Original carrying case
Condition:
Excellent condition with clean optics and smooth focuser operation.
The FRA400 has earned an excellent reputation among astrophotographers for its sharp optics, flat field, and portability. With both the native 400mm f/5.6 configuration and the included 280mm f/3.9 reducer, this package offers exceptional versatility—from wide-field Milky Way panoramas to detailed deep-sky imaging—all with fast optics and minimal setup.
