William Optics Zenith Star 70mm f/6 Doublet ED Refractor
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2012 William Optics ZenithStar 70mm ED Doublet F/6 APO is a true multi-purpose tube assembly.
Excellent mechanics, fit and finish, latest WO Rack & Pinion 2-speed fine focuser, aluminum knob protection cover and super-high transmission multi-coating.
Its fast focal ratio makes it your ideal travelling set-up for astrophotography, piggybacking or as a spotting scope.
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.
- 70mm clear aperture and F/6 focal ratio.
Nothing Left to Chance
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 72 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
Super Portable
- Retractable dewshield, smallest size ever and enhanced portability!
- SCT thread adapter to 1.25'' eyepieces with anti-marring brass compression ring.
- Can mount a WO 2'' SCT star diagonal for 2'' accessory usage.
Astrophotography super-apo
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope.
Wonderful WO Microfocuser
- William Optics new rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography.
- 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!
Useful Resources
Product Manual - William Optics Zenith Star 70mm Manual (PDF File)
Please note that the hard case shown in the manual is not included with the telescope. This is an error in the manual.
-Review Page 1, Page 2
2012 William Optics ZenithStar 70mm ED Doublet F/6 APO is a true multi-purpose tube assembly.
Excellent mechanics, fit and finish, latest WO Rack & Pinion 2-speed fine focuser, aluminum knob protection cover and super-high transmission multi-coating.
Its fast focal ratio makes it your ideal travelling set-up for astrophotography, piggybacking or as a spotting scope.
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.
- 70mm clear aperture and F/6 focal ratio.
Nothing Left to Chance
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 72 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
Super Portable
- Retractable dewshield, smallest size ever and enhanced portability!
- SCT thread adapter to 1.25'' eyepieces with anti-marring brass compression ring.
- Can mount a WO 2'' SCT star diagonal for 2'' accessory usage.
Astrophotography super-apo
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope.
Wonderful WO Microfocuser
- William Optics new rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography.
- 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 | 70 mm |
| Focal Ratio | F/6 (F/4.8 with new FlatIII) |
| Focal Length | 420 mm |
| Objective Type | Doublet, Air Spaced, Fully Multi-Coated, SMC coating. |
| Resolving Power | 1.6" |
| Limiting Magnitude | 11 |
| Lens Shade | Retractable |
| Focuser | 1.25" new R&P Focuser with 1:10 Dual Speed microfocuser 72 mm Focuser Travel Length 360° Rotatable Design |
| L-type Mount | L Bracket |
| Field Stops | 2 Baffles |
| Tube Diameter | 76 mm (dewshield 96mm) |
| Tube Length | 330 mm Fully Retracted 400 mm Fully Extended |
| Tube Weight | 4.8 lbs. (2.2 kg) |
2012 William Optics ZenithStar 70mm ED Doublet F/6 APO is a true multi-purpose tube assembly.
Excellent mechanics, fit and finish, latest WO Rack & Pinion 2-speed fine focuser, aluminum knob protection cover and super-high transmission multi-coating.
Its fast focal ratio makes it your ideal travelling set-up for astrophotography, piggybacking or as a spotting scope.
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.
- 70mm clear aperture and F/6 focal ratio.
Nothing Left to Chance
- Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube
- Drawtube travel length 72 mm with graduated scale.
- Retractable dewshield, smallest size ever and enhanced portability!
Super Portable
- Retractable dewshield, smallest size ever and enhanced portability!
- SCT thread adapter to 1.25'' eyepieces with anti-marring brass compression ring.
- Can mount a WO 2'' SCT star diagonal for 2'' accessory usage.
Astrophotography super-apo
- Fast focal ratio for bright, high-quality astro-imaging.
- Perfect for piggybacking as a guide scope.
Wonderful WO Microfocuser
- William Optics new rotatable Rack & Pinion focuser, smooth and precise, ideal during astrophotography.
- 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!
Useful Resources
Product Manual - William Optics Zenith Star 70mm Manual (PDF File)
Please note that the hard case shown in the manual is not included with the telescope. This is an error in the manual.
-Review Page 1, Page 2
| Manufacturer | William Optics |
|---|
| Aperture | 70 mm |
| Focal Ratio | F/6 (F/4.8 with new FlatIII) |
| Focal Length | 420 mm |
| Objective Type | Doublet, Air Spaced, Fully Multi-Coated, SMC coating. |
| Resolving Power | 1.6" |
| Limiting Magnitude | 11 |
| Lens Shade | Retractable |
| Focuser | 1.25" new R&P Focuser with 1:10 Dual Speed microfocuser 72 mm Focuser Travel Length 360° Rotatable Design |
| L-type Mount | L Bracket |
| Field Stops | 2 Baffles |
| Tube Diameter | 76 mm (dewshield 96mm) |
| Tube Length | 330 mm Fully Retracted 400 mm Fully Extended |
| Tube Weight | 4.8 lbs. (2.2 kg) |