ToupTek 58mm f/6 ED Triplet PAPO Guide Scope with Rack & Pinion Focuser
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- Ultra compact 58 mm aperture, 350 mm focal length and fast f/6 focal ratio
- Self flattening optical design with ED glass for color correction and edge-to-edge sharpness
- Front M48x0.75 threading for filter wheel or mounted filter attachment
- Smooth Rack & Pinion geared focusing structure focuser
- Modular M48 extension system supports most standard diagonals and eyepiece
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 350mm f/6 Guide Scope combines a 58mm aperture and 350mm focal length with a three-element PAPO ED optical design and integrated field flattening for sharp, pinpoint stars. Its compact CNC-machined aluminum body and smooth Rack-and-Pinion focuser (AR) provide precise focusing for guiding, imaging, and visual observing. A modular M48 extension system provides flexible spacing for different optical setups and allows the scope to work with most standard diagonals and eyepieces, making it a versatile option beyond traditional autoguiding.
How to Choose the Right Guide Scope
A practical starting point is to choose a guide scope with a focal length approximately one-third to one-half of your main telescope's focal length. For example, a 750mm main telescope can be paired with a guide scope around 250mm. The GS Series offers 150mm, 200mm, 250mm, 300mm, and 350mm focal-length options for different astrophotography setups.
| Model | Focal Length | Aperture | Focal Ratio | Camera Interface | Version |
|---|---|---|---|---|---|
| GS-150 AC/AR | 150mm | 30mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-200 AC/AR | 200mm | 40mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-250 AC/AR | 250mm | 50mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-300 AC/AR | 300mm | 50mm | f/6 | 1.25" / M42×0.75 | AC / AR |
| GS-350 AC/AR | 350mm | 58mm | f/6 | 1.25" / M42×0.75 | AC / AR |
Rack-and-Pinion Focuser
Rack-and-Pinion (AR version): AR is intended for users who want both guiding and imaging flexibility. Its geared focusing structure provides greater load capacity and is better suited to setups that may use imaging cameras or additional accessories.
| Your Use Case | Recommended Version |
|---|---|
| Autoguiding only | AC |
| Guiding + imaging | AR |
| More equipment or future expansion | AR |
Camera Sensor Compatibility
Designed around a 1-inch flat, well-corrected image circle, the GS Series supports sensors up to the IMX533 size. Versatile in function, it can be used for star-hopping, guiding, visual observing, and even DSO imaging—making it an ideal tool for astrophotography, casual stargazing, and entry-level night-sky photography. Focuser drawtube offers 1.25-inch inner diameter with an external M42x0.75 thread. (Cameras sold separately)
More Than Just a Guide Scope
The GS-350 is designed for both guiding and visual observing, making it a versatile addition to your setup. For visual use, switching to a 50 mm (5 cm) M48 extender to provide the spacing needed for a compatible diagonal to reach focus. Pair it with most standard diagonals and eyepieces to easily transition from astrophotography to visual observing.
- Visual Observing Ready: Use the included 50 mm (5 cm) M48 extender to reach focus with most standard diagonals and eyepieces.
Mounting Options
The tube rings feature multiple M5 threaded holes for attaching additional accessories, while the dovetail plate includes multiple M6 threads and a 3/8"-16 mounting point for easy attachment to compatible tripods and equatorial mounts.
Specifications:
- Aperture: 58 mm
- Focal Length: 350 mm
- Focal Ratio: f/6
- Optical design: Triplet APO (w/ ED glass element)
- Focuser Type: 1.25" Rack-and-Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Dimensions
Spot Diagram
Other Information
- Country of Manufacture: China
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 350mm f/6 Guide Scope combines a 58mm aperture and 350mm focal length with a three-element PAPO ED optical design and integrated field flattening for sharp, pinpoint stars. Its compact CNC-machined aluminum body and smooth Rack-and-Pinion focuser (AR) provide precise focusing for guiding, imaging, and visual observing. A modular M48 extension system provides flexible spacing for different optical setups and allows the scope to work with most standard diagonals and eyepieces, making it a versatile option beyond traditional autoguiding.
How to Choose the Right Guide Scope
A practical starting point is to choose a guide scope with a focal length approximately one-third to one-half of your main telescope's focal length. For example, a 750mm main telescope can be paired with a guide scope around 250mm. The GS Series offers 150mm, 200mm, 250mm, 300mm, and 350mm focal-length options for different astrophotography setups.
| Model | Focal Length | Aperture | Focal Ratio | Camera Interface | Version |
|---|---|---|---|---|---|
| GS-150 AC/AR | 150mm | 30mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-200 AC/AR | 200mm | 40mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-250 AC/AR | 250mm | 50mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-300 AC/AR | 300mm | 50mm | f/6 | 1.25" / M42×0.75 | AC / AR |
| GS-350 AC/AR | 350mm | 58mm | f/6 | 1.25" / M42×0.75 | AC / AR |
Rack-and-Pinion Focuser
Rack-and-Pinion (AR version): AR is intended for users who want both guiding and imaging flexibility. Its geared focusing structure provides greater load capacity and is better suited to setups that may use imaging cameras or additional accessories.
| Your Use Case | Recommended Version |
|---|---|
| Autoguiding only | AC |
| Guiding + imaging | AR |
| More equipment or future expansion | AR |
Camera Sensor Compatibility
Designed around a 1-inch flat, well-corrected image circle, the GS Series supports sensors up to the IMX533 size. Versatile in function, it can be used for star-hopping, guiding, visual observing, and even DSO imaging—making it an ideal tool for astrophotography, casual stargazing, and entry-level night-sky photography. Focuser drawtube offers 1.25-inch inner diameter with an external M42x0.75 thread. (Cameras sold separately)
More Than Just a Guide Scope
The GS-350 is designed for both guiding and visual observing, making it a versatile addition to your setup. For visual use, switching to a 50 mm (5 cm) M48 extender to provide the spacing needed for a compatible diagonal to reach focus. Pair it with most standard diagonals and eyepieces to easily transition from astrophotography to visual observing.
- Visual Observing Ready: Use the included 50 mm (5 cm) M48 extender to reach focus with most standard diagonals and eyepieces.
Mounting Options
The tube rings feature multiple M5 threaded holes for attaching additional accessories, while the dovetail plate includes multiple M6 threads and a 3/8"-16 mounting point for easy attachment to compatible tripods and equatorial mounts.
Specifications:
- Aperture: 58 mm
- Focal Length: 350 mm
- Focal Ratio: f/6
- Optical design: Triplet APO (w/ ED glass element)
- Focuser Type: 1.25" Rack-and-Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Dimensions
Spot Diagram
| Manufacturer | ToupTek |
|---|---|
| Telescope Focal Length | 301 - 400mm |
- 1x GS350AR
- 1x Tube ring and dovetail
- 1x Dust cap
- Ultra compact 58 mm aperture, 350 mm focal length and fast f/6 focal ratio
- Self flattening optical design with ED glass for color correction and edge-to-edge sharpness
- Front M48x0.75 threading for filter wheel or mounted filter attachment
- Smooth Rack & Pinion geared focusing structure focuser
- Modular M48 extension system supports most standard diagonals and eyepiece
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 350mm f/6 Guide Scope combines a 58mm aperture and 350mm focal length with a three-element PAPO ED optical design and integrated field flattening for sharp, pinpoint stars. Its compact CNC-machined aluminum body and smooth Rack-and-Pinion focuser (AR) provide precise focusing for guiding, imaging, and visual observing. A modular M48 extension system provides flexible spacing for different optical setups and allows the scope to work with most standard diagonals and eyepieces, making it a versatile option beyond traditional autoguiding.
How to Choose the Right Guide Scope
A practical starting point is to choose a guide scope with a focal length approximately one-third to one-half of your main telescope's focal length. For example, a 750mm main telescope can be paired with a guide scope around 250mm. The GS Series offers 150mm, 200mm, 250mm, 300mm, and 350mm focal-length options for different astrophotography setups.
| Model | Focal Length | Aperture | Focal Ratio | Camera Interface | Version |
|---|---|---|---|---|---|
| GS-150 AC/AR | 150mm | 30mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-200 AC/AR | 200mm | 40mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-250 AC/AR | 250mm | 50mm | f/5 | 1.25" / M42×0.75 | AC / AR |
| GS-300 AC/AR | 300mm | 50mm | f/6 | 1.25" / M42×0.75 | AC / AR |
| GS-350 AC/AR | 350mm | 58mm | f/6 | 1.25" / M42×0.75 | AC / AR |
Rack-and-Pinion Focuser
Rack-and-Pinion (AR version): AR is intended for users who want both guiding and imaging flexibility. Its geared focusing structure provides greater load capacity and is better suited to setups that may use imaging cameras or additional accessories.
| Your Use Case | Recommended Version |
|---|---|
| Autoguiding only | AC |
| Guiding + imaging | AR |
| More equipment or future expansion | AR |
Camera Sensor Compatibility
Designed around a 1-inch flat, well-corrected image circle, the GS Series supports sensors up to the IMX533 size. Versatile in function, it can be used for star-hopping, guiding, visual observing, and even DSO imaging—making it an ideal tool for astrophotography, casual stargazing, and entry-level night-sky photography. Focuser drawtube offers 1.25-inch inner diameter with an external M42x0.75 thread. (Cameras sold separately)
More Than Just a Guide Scope
The GS-350 is designed for both guiding and visual observing, making it a versatile addition to your setup. For visual use, switching to a 50 mm (5 cm) M48 extender to provide the spacing needed for a compatible diagonal to reach focus. Pair it with most standard diagonals and eyepieces to easily transition from astrophotography to visual observing.
- Visual Observing Ready: Use the included 50 mm (5 cm) M48 extender to reach focus with most standard diagonals and eyepieces.
Mounting Options
The tube rings feature multiple M5 threaded holes for attaching additional accessories, while the dovetail plate includes multiple M6 threads and a 3/8"-16 mounting point for easy attachment to compatible tripods and equatorial mounts.
Specifications:
- Aperture: 58 mm
- Focal Length: 350 mm
- Focal Ratio: f/6
- Optical design: Triplet APO (w/ ED glass element)
- Focuser Type: 1.25" Rack-and-Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Dimensions
Spot Diagram
Other Information
- Country of Manufacture: China
| Manufacturer | ToupTek |
|---|---|
| Telescope Focal Length | 301 - 400mm |
- 1x GS350AR
- 1x Tube ring and dovetail
- 1x Dust cap