William Optics GT71 71mm f/5.9 Apo Refractor Telescope with Soft Case - Red
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- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
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New for 2023 - William Optics now includes a free M-CAA63 rotator with this telescope (a $109 value)!
Gran Turismo 71 APO Refractor
The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. The new GT71 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.
Optically Unbeatable
- Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
- Extremely sharp with excellent color correction.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces
- This f/5.9 lens is ideal for astrophotography.
2.5" R&P Focuser
- Extra-smooth 2.5" R&P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting!
- Comes with two locking screws on angled positions for heavy load applications.
- Large aluminum knob with installed thermometer.
Patented Design
- Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
- Graduated scale for precise camera alignment.
Simply Beautiful Finish
- Quality fit and finish: powder-painted white CNC-machined aluminum tube, red trim finish, retractable dewshield, dewshield cap.
- Top quality anodizing.
- Very compact for carrying on flights.
Standard Package：
- CNC Carry Handle/Saddle Bar with integrated Vixen-style slot for compatible guidescopes or finder brackets
- New Dual-Sided Dovetail Rail
- 2.5” R&P Focuser
- Innovative Bahtinov Mask Cover (Patented)
- Soft Carry Case
- Two-year, no fuss warranty and constant customer service!
Optional Accessories：
- M63 -2” Rotolock
- 1.25” Rotolock
- All New Slide-base 50mm Guiding Rings
- Slide-base UniGuide 32mm or 50mm Scope
- New Full frame x0.8 Flattener
Specifications:
- Focal Length: 419mm
- Diameter: 71mm
- Aperture: f/5.9
- Camera Format: APS-C, Full Frame
- Focuser: 2.5" R&P Focuser
- Image Circle: > Full Frame
- Recommended Flattener: Flat6AIII
- Tube Length (Fully Retracted): 392mm
- Tube Length (Fully Extended): 470mm
- Dew shield OD: 92mm / 3.62"
- Tube Weight: 2.95 kg
- Interchangeable T-Mount (sold separately): Canon EF, Nikon F, Sony E, Pentax, Micro Four Thirds, Fuji FX
Other Information
- Country of Manufacture: Taiwan
New for 2023 - William Optics now includes a free M-CAA63 rotator with this telescope (a $109 value)!
Gran Turismo 71 APO Refractor
The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. The new GT71 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.
Optically Unbeatable
- Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
- Extremely sharp with excellent color correction.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces
- This f/5.9 lens is ideal for astrophotography.
2.5" R&P Focuser
- Extra-smooth 2.5" R&P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting!
- Comes with two locking screws on angled positions for heavy load applications.
- Large aluminum knob with installed thermometer.
Patented Design
- Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
- Graduated scale for precise camera alignment.
Simply Beautiful Finish
- Quality fit and finish: powder-painted white CNC-machined aluminum tube, red trim finish, retractable dewshield, dewshield cap.
- Top quality anodizing.
- Very compact for carrying on flights.
Standard Package：
- CNC Carry Handle/Saddle Bar with integrated Vixen-style slot for compatible guidescopes or finder brackets
- New Dual-Sided Dovetail Rail
- 2.5” R&P Focuser
- Innovative Bahtinov Mask Cover (Patented)
- Soft Carry Case
- Two-year, no fuss warranty and constant customer service!
Optional Accessories：
- M63 -2” Rotolock
- 1.25” Rotolock
- All New Slide-base 50mm Guiding Rings
- Slide-base UniGuide 32mm or 50mm Scope
- New Full frame x0.8 Flattener
Specifications:
- Focal Length: 419mm
- Diameter: 71mm
- Aperture: f/5.9
- Camera Format: APS-C, Full Frame
- Focuser: 2.5" R&P Focuser
- Image Circle: > Full Frame
- Recommended Flattener: Flat6AIII
- Tube Length (Fully Retracted): 392mm
- Tube Length (Fully Extended): 470mm
- Dew shield OD: 92mm / 3.62"
- Tube Weight: 2.95 kg
- Interchangeable T-Mount (sold separately): Canon EF, Nikon F, Sony E, Pentax, Micro Four Thirds, Fuji FX
New for 2023 - William Optics now includes a free M-CAA63 rotator with this telescope (a $109 value)!
Gran Turismo 71 APO Refractor
The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. The new GT71 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.
Optically Unbeatable
- Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
- Extremely sharp with excellent color correction.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces
- This f/5.9 lens is ideal for astrophotography.
2.5" R&P Focuser
- Extra-smooth 2.5" R&P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting!
- Comes with two locking screws on angled positions for heavy load applications.
- Large aluminum knob with installed thermometer.
Patented Design
- Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
- Graduated scale for precise camera alignment.
Simply Beautiful Finish
- Quality fit and finish: powder-painted white CNC-machined aluminum tube, red trim finish, retractable dewshield, dewshield cap.
- Top quality anodizing.
- Very compact for carrying on flights.
Standard Package：
- CNC Carry Handle/Saddle Bar with integrated Vixen-style slot for compatible guidescopes or finder brackets
- New Dual-Sided Dovetail Rail
- 2.5” R&P Focuser
- Innovative Bahtinov Mask Cover (Patented)
- Soft Carry Case
- Two-year, no fuss warranty and constant customer service!
Optional Accessories：
- M63 -2” Rotolock
- 1.25” Rotolock
- All New Slide-base 50mm Guiding Rings
- Slide-base UniGuide 32mm or 50mm Scope
- New Full frame x0.8 Flattener
Specifications:
- Focal Length: 419mm
- Diameter: 71mm
- Aperture: f/5.9
- Camera Format: APS-C, Full Frame
- Focuser: 2.5" R&P Focuser
- Image Circle: > Full Frame
- Recommended Flattener: Flat6AIII
- Tube Length (Fully Retracted): 392mm
- Tube Length (Fully Extended): 470mm
- Dew shield OD: 92mm / 3.62"
- Tube Weight: 2.95 kg
- Interchangeable T-Mount (sold separately): Canon EF, Nikon F, Sony E, Pentax, Micro Four Thirds, Fuji FX
Other Information
- Country of Manufacture: Taiwan
| Telescope Focal Length | 401 - 500mm |
|---|