FRA600 Quintuplet APO Astrograph
Askar
From ~$2,484.74
5 stores
The Askar FRA600 is a premium 108mm quintuplet Petzval-design astrograph engineered specifically for wide-field deep-sky imaging with exceptional optical performance. Featuring a 600mm focal length at f/5.6, this flat-field refractor incorporates two ED glass elements and a built-in corrector that delivers excellent chromatic aberration correction and a generous 66mm fully-corrected image circle suitable for full-frame cameras. With its compact 493mm retracted length, large 4.2" dual-speed focuser, and numerous mounting options, the FRA600 offers professional-grade astrophotography capability in a highly portable instrument.
Astronomy Plus
FRA600 108mm f/5.6 Quintuplet APO (FRA600)
Worldwide shipping
CA$3,400.00
~$2,484.74
High Point Scientific
FRA600 108 mm Quintuplet APO Astrograph
Ships to US only
$2,599.00
Starizona
FRA600
Worldwide shipping
$2,599.00
OPT
Askar FRA600 4.3" 108mm F/5.6 Quintuplet Petzval Flat Field Astrograph
Worldwide shipping
$2,599.00
First Light Optics
Askar FRA600 108mm f/5.6 Quintuplet APO Astrograph
Worldwide shipping
£2,699.00
~$3,638.12
Specifications
| Back Focus | 160 mm |
| Focuser Size | 4.2 in |
| Focal ratio | f/5.6 |
| ED Elements | 2 |
| Focuser Type | Rack-and-pinion dual-speed |
| Tube Diameter | 120 mm |
| Image Circle | 66 mm |
| Focal length | 600 mm |
| Number of Elements | 5 |
| Aperture | 108 mm |
| Optical design | Petzval |
| Dovetail Width | 73.2 mm |
| Weight | 6.5 lb |
| Length (Dew Shield Retracted) | 493 in |
| Dovetail | Losmandy-style D-rail |