William Optics ZenithStar 71mm f/5.9 Doublet ED Refractor
This item is discontinued by the manufacturer and is no longer available.
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Special Website Offer: For a limited time, get a free deluxe WO soft padded case - a $55 value - with the purchase of this telescope!
Special Offer: Receive $10 off a Soft Carry Case for this telescope. Just add both items to your cart and the discount will be automatically applied. Offer valid ONLY if you purchase both items (Case and Z71 Scope) in the same transaction.
A small-aperture but extremely-portable ED scope at a GREAT price? The latest ZS 71 ED Doublet is here to fit all your needs!
Excellent mechanics, fit and finish, with the latest WO 2" Rack & Pinion 2-speed fine focuser. Improved focuser is so good that it replicates the smoothness and lack of backlash normally associated with a Crayford focuser, but with the huge advantage of much increased mechanical strength.
Lens Design
- ED glass (Japanese imported Ohara glass) doublet air-spaced, in CNC machined ultra-high precision lens cell.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.
Low CA
- Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
- 71 mm clear aperture and F/5.9 focal ratio.
Nothing Left to Chance
- Perfect for Vixen-style mount dovetail bases. You can slide it directly into the mount without a dovetail plate if you like.
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 80 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
- Can mount a WO 2'' star diagonal and other 2" accessories.
Astrophotography ED Scope
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope
Wonderful WO Microfocuser
- New rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography; can be fully locked and will not flex or slip even with a very heavy camera combination.
- Adjustable focuser tension.
- Super-smooth and reliable 1:10 micro focuser for fine focusing during imaging and visual observations alike.
- Aluminum fine knob protection cover is included.
Attention to Packaging
- The basic package includes the OTA only.
- Carry-on size: you do not have to leave this treasure home!
- Two-year, no fuss warranty and constant customer service!
A small-aperture but extremely-portable ED scope at a GREAT price? The latest ZS 71 ED Doublet is here to fit all your needs!
Excellent mechanics, fit and finish, with the latest WO 2" Rack & Pinion 2-speed fine focuser. Improved focuser is so good that it replicates the smoothness and lack of backlash normally associated with a Crayford focuser, but with the huge advantage of much increased mechanical strength.
Lens Design
- ED glass (Japanese imported Ohara glass) doublet air-spaced, in CNC machined ultra-high precision lens cell.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.
Low CA
- Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
- 71 mm clear aperture and F/5.9 focal ratio.
Nothing Left to Chance
- Perfect for Vixen-style mount dovetail bases. You can slide it directly into the mount without a dovetail plate if you like.
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 80 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
- Can mount a WO 2'' star diagonal and other 2" accessories.
Astrophotography ED Scope
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope
Wonderful WO Microfocuser
- New rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography; can be fully locked and will not flex or slip even with a very heavy camera combination.
- Adjustable focuser tension.
- Super-smooth and reliable 1:10 micro focuser for fine focusing during imaging and visual observations alike.
- Aluminum fine knob protection cover is included.
Attention to Packaging
- The basic package includes the OTA only.
- Carry-on size: you do not have to leave this treasure home!
- Two-year, no fuss warranty and constant customer service!
| Manufacturer | William Optics |
|---|
| Aperture | 71mm |
| Focal Ratio | F/5.9 |
| Focal Length | 418 mm |
| Objective Type | ED Doublet, Air Spaced, Fully Multi-Coated, SMC coating. |
| Resolving Power | 1.58" |
| Limiting Magnitude | 11 |
| Lens Shade | Retractable |
| Focuser | 50.8mm (2") Rack & Pinion Focuser with 1:10 Dual Speed microfocuser 80 mm (3.2") Focuser Travel Length 360° Rotatable Design |
| 1.25" Adapter | Brass Compression Rings |
| L-type Mount | Integrated L Bracket (fits SmartEQ mount) |
| Field Stops | Baffles |
| Tube Diameter | 93 mm (3.66") |
| Tube Length | 310 mm Fully Retracted 355 mm Fully Extended |
| Tube Weight | 6 lbs. (2.7 kg) |
Special Website Offer: For a limited time, get a free deluxe WO soft padded case - a $55 value - with the purchase of this telescope!
Special Offer: Receive $10 off a Soft Carry Case for this telescope. Just add both items to your cart and the discount will be automatically applied. Offer valid ONLY if you purchase both items (Case and Z71 Scope) in the same transaction.
A small-aperture but extremely-portable ED scope at a GREAT price? The latest ZS 71 ED Doublet is here to fit all your needs!
Excellent mechanics, fit and finish, with the latest WO 2" Rack & Pinion 2-speed fine focuser. Improved focuser is so good that it replicates the smoothness and lack of backlash normally associated with a Crayford focuser, but with the huge advantage of much increased mechanical strength.
Lens Design
- ED glass (Japanese imported Ohara glass) doublet air-spaced, in CNC machined ultra-high precision lens cell.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.
Low CA
- Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
- 71 mm clear aperture and F/5.9 focal ratio.
Nothing Left to Chance
- Perfect for Vixen-style mount dovetail bases. You can slide it directly into the mount without a dovetail plate if you like.
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 80 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
- Can mount a WO 2'' star diagonal and other 2" accessories.
Astrophotography ED Scope
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope
Wonderful WO Microfocuser
- New rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography; can be fully locked and will not flex or slip even with a very heavy camera combination.
- Adjustable focuser tension.
- Super-smooth and reliable 1:10 micro focuser for fine focusing during imaging and visual observations alike.
- Aluminum fine knob protection cover is included.
Attention to Packaging
- The basic package includes the OTA only.
- Carry-on size: you do not have to leave this treasure home!
- Two-year, no fuss warranty and constant customer service!
| Manufacturer | William Optics |
|---|
| Aperture | 71mm |
| Focal Ratio | F/5.9 |
| Focal Length | 418 mm |
| Objective Type | ED Doublet, Air Spaced, Fully Multi-Coated, SMC coating. |
| Resolving Power | 1.58" |
| Limiting Magnitude | 11 |
| Lens Shade | Retractable |
| Focuser | 50.8mm (2") Rack & Pinion Focuser with 1:10 Dual Speed microfocuser 80 mm (3.2") Focuser Travel Length 360° Rotatable Design |
| 1.25" Adapter | Brass Compression Rings |
| L-type Mount | Integrated L Bracket (fits SmartEQ mount) |
| Field Stops | Baffles |
| Tube Diameter | 93 mm (3.66") |
| Tube Length | 310 mm Fully Retracted 355 mm Fully Extended |
| Tube Weight | 6 lbs. (2.7 kg) |