William Optics Gran Turismo 81 IV APO Refractor
| Article number: | A-F81GTIVRD |
| Availability: | More on the Way to us |
| Delivery time: | More on the Way to Us |
- Lens Type - Triplet Apochromatic Prime Lens
- Focal Length - 478 mm
- Diameter - 81 mm
- Focal Ratio - f/5.9
- Image circle - 45 mm
- Focuser - 2.5" R&P Focuser Compatible with EAF
- Focus travel - 93 mm
- Adapter Included - M63 Rotator 2" → 1.25" Visual Back
- Optional Flattener - FLAT GT 1.0x FLAT 6AIII 0.8x
- Camera Format - Full Frame APS-C M4/3
- Tube Length - 390 mm - 460 mm
- OTA Weight - 3.9 kg / 8.6 lbs
