Technical data sheet
Askar FRA400C – 72mm f/5.6 Quintuplet ED Apochromatic Refractor Astrograph
The Askar FRA400C is an apochromatic refractor astrograph with a 72 mm aperture and 400 mm focal length (f/5.6), developed for wide-field astrophotography. Thanks to its 5-element Petzval optical design (quintuplet ED), featuring an integrated field flattener, the FRA400C provides flat and corrected images across full-frame sensors, eliminating chromatic aberration and coma. Compact and lightweight, it represents an excellent solution for those seeking a high-performance, portable telescope for deep-sky imaging.
- 5-element APO astrograph with integrated flattener
- 72 mm aperture, 400 mm focal length (f/5.6)
- Perfectly corrected flat field up to full-frame
- High chromatic and geometric correction
- Compact and portable for mobile astrophotography
- 2.5" rack-and-pinion focuser with 1:10 micro-adjustment
- Retractable dew shield to reduce footprint
- CNC rings and Vixen-style dovetail bar included
Technical specifications
| Model | Askar FRA400C |
| Optical type | Petzval apochromatic refractor |
| Optical design | 5 elements (quintuplet ED with integrated flattener) |
| Aperture | 72 mm |
| Focal length | 400 mm |
| Focal ratio | f/5.6 |
| Corrected image circle | Full-frame |
| Focuser | 2.5" with 1:10 dual speed |
| Dew shield | Retractable |
| Included accessories | CNC rings, Vixen-style dovetail bar |
| Weight | ~3.9 kg |
| Tube length | ~430 mm (dew shield retracted) |
Products priced over €199.99 qualify for free shipping.
Askar FRA400C – 72mm f/5.6 Quintuplet ED Apochromatic Refractor Astrograph
The Askar FRA400C is an apochromatic refractor astrograph with a 72 mm aperture and 400 mm focal length (f/5.6), developed for wide-field astrophotography. Thanks to its 5-element Petzval optical design (quintuplet ED), featuring an integrated field flattener, the FRA400C provides flat and corrected images across full-frame sensors, eliminating chromatic aberration and coma. Compact and lightweight, it represents an excellent solution for those seeking a high-performance, portable telescope for deep-sky imaging.
- 5-element APO astrograph with integrated flattener
- 72 mm aperture, 400 mm focal length (f/5.6)
- Perfectly corrected flat field up to full-frame
- High chromatic and geometric correction
- Compact and portable for mobile astrophotography
- 2.5" rack-and-pinion focuser with 1:10 micro-adjustment
- Retractable dew shield to reduce footprint
- CNC rings and Vixen-style dovetail bar included
Technical specifications
| Model | Askar FRA400C |
| Optical type | Petzval apochromatic refractor |
| Optical design | 5 elements (quintuplet ED with integrated flattener) |
| Aperture | 72 mm |
| Focal length | 400 mm |
| Focal ratio | f/5.6 |
| Corrected image circle | Full-frame |
| Focuser | 2.5" with 1:10 dual speed |
| Dew shield | Retractable |
| Included accessories | CNC rings, Vixen-style dovetail bar |
| Weight | ~3.9 kg |
| Tube length | ~430 mm (dew shield retracted) |
Products priced over €199.99 qualify for free shipping.
SKU:ASK-FRA400C
Askar FRA400C – 72mm f/5.6 Quintuplet ED APO Refractor Astrograph for astrophotography
- Regular price
- €1.200,00
- Sale price
- €1.200,00
- Regular price
-
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Paga in 3 rate da €400,00 senza interessi.
Askar FRA400C – 72mm f/5.6 Quintuplet ED Apochromatic Refractor Astrograph
The Askar FRA400C is an apochromatic refractor astrograph with a 72 mm aperture and 400 mm focal length (f/5.6), developed for wide-field astrophotography. Thanks to its 5-element Petzval optical design (quintuplet ED), featuring an integrated field flattener, the FRA400C provides flat and corrected images across full-frame sensors, eliminating chromatic aberration and coma. Compact and lightweight, it represents an excellent solution for those seeking a high-performance, portable telescope for deep-sky imaging.
- 5-element APO astrograph with integrated flattener
- 72 mm aperture, 400 mm focal length (f/5.6)
- Perfectly corrected flat field up to full-frame
- High chromatic and geometric correction
- Compact and portable for mobile astrophotography
- 2.5" rack-and-pinion focuser with 1:10 micro-adjustment
- Retractable dew shield to reduce footprint
- CNC rings and Vixen-style dovetail bar included
Technical specifications
| Model | Askar FRA400C |
| Optical type | Petzval apochromatic refractor |
| Optical design | 5 elements (quintuplet ED with integrated flattener) |
| Aperture | 72 mm |
| Focal length | 400 mm |
| Focal ratio | f/5.6 |
| Corrected image circle | Full-frame |
| Focuser | 2.5" with 1:10 dual speed |
| Dew shield | Retractable |
| Included accessories | CNC rings, Vixen-style dovetail bar |
| Weight | ~3.9 kg |
| Tube length | ~430 mm (dew shield retracted) |
Products priced over €199.99 qualify for free shipping.
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Terms and conditions
Paga in 3 rate da €400,00 senza interessi.