ToupTek 25mm f/4 ED PAPO Guide Scope with Rack & Pinion Focuser
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- Ultra compact 25mm aperture, 100 mm focal length and fast f/4 focal ratio
- Self flattening, APO 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 manual focus with Rack & Pinion focuser
- Designed as a flexible accessory that adapts to a wide range of astronomy equipment
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 100mm f/4 Guide Scope is designed to be more than a traditional guide scope. Featuring an APO four-element, 2-group self-flattening PAPO design with ED glass and an integrated flat-field optical system, these versatile compact scopes deliver pinpoint stars for accurate guiding while also being capable of visual observing and entry-level astrophotography. With an 25mm aperture and 100mm focal length, the GS Series provides bright, sharp performance in a compact and lightweight package ideal for portable imaging setups.
The precision rack-and-pinion focuser (AR) models provide smooth, repeatable focusing with increased load capacity, making them ideal for guide cameras, planetary cameras, and even automated focusing systems. Combined with lightweight CNC-machined aluminum construction, a modular design, and broad accessory compatibility, the GS Series offers a powerful and flexible solution for astrophotographers looking to get the most from every clear night.
GS Series Standout Features!
Broad Compatibility
The GS series guide scopes are ready for a wide range of accessories. High-transmission coatings and fully baffled interiors preserve contrast, whether you attach cameras, focusers, or diagonals. Supporting high-quality imaging with a 1-inch and smaller guide or planetary cameras.
Filter Threading
The front of the GS100 features a M48x0,75 threading to allow use of standard 2-inch mounted filters for mono or color imaging. Filter wheels can be mounted directly to the front using a M54-M48 step-down adapter.
Seamless Integration
The Inlcuded mini dovetail base provides multiple M6 threaded holes plus a 3/8-16 port for quick attachment to tripods or equatorial mounts.
Robust Rack & Pinion
Rack-and-pinion focuser (AR version): paired with the FSB-125R gear focuser. Bearing-guided gear drive increases load capacity and precision, and it supports ToupTek AAF or third-party motor focusers for automated focusing.
Astrophotography Ready
The rear focuser features a 1.25-inch internal diameter and M42x0.75 external thread. This allows direct connections to most modern cooled astronomy cameras. This setup is ideal for portable or entry-level astrophotography.
Auto Focuser Compatible
Focuser drawtube offers a 1.25-inch inner diameter with an external M42x0.75 thread—connect cooled cameras (optimized for a 1-inch image circle) or add motor focusers such as the ToupTek AAF or IFR focus stations.
Specifications:
- Aperture: 25 mm
- Focal Length: 100 mm
- Focal Ratio: f/4
- Optical Design: 4-element, 2-group PAPO (1 ED glass element)
- Focuser Type: 1.25" Rack & Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Spot Diagram
Other Information
- Country of Manufacture: China
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 100mm f/4 Guide Scope is designed to be more than a traditional guide scope. Featuring an APO four-element, 2-group self-flattening PAPO design with ED glass and an integrated flat-field optical system, these versatile compact scopes deliver pinpoint stars for accurate guiding while also being capable of visual observing and entry-level astrophotography. With an 25mm aperture and 100mm focal length, the GS Series provides bright, sharp performance in a compact and lightweight package ideal for portable imaging setups.
The precision rack-and-pinion focuser (AR) models provide smooth, repeatable focusing with increased load capacity, making them ideal for guide cameras, planetary cameras, and even automated focusing systems. Combined with lightweight CNC-machined aluminum construction, a modular design, and broad accessory compatibility, the GS Series offers a powerful and flexible solution for astrophotographers looking to get the most from every clear night.
GS Series Standout Features!
Broad Compatibility
The GS series guide scopes are ready for a wide range of accessories. High-transmission coatings and fully baffled interiors preserve contrast, whether you attach cameras, focusers, or diagonals. Supporting high-quality imaging with a 1-inch and smaller guide or planetary cameras.
Filter Threading
The front of the GS100 features a M48x0,75 threading to allow use of standard 2-inch mounted filters for mono or color imaging. Filter wheels can be mounted directly to the front using a M54-M48 step-down adapter.
Seamless Integration
The Inlcuded mini dovetail base provides multiple M6 threaded holes plus a 3/8-16 port for quick attachment to tripods or equatorial mounts.
Robust Rack & Pinion
Rack-and-pinion focuser (AR version): paired with the FSB-125R gear focuser. Bearing-guided gear drive increases load capacity and precision, and it supports ToupTek AAF or third-party motor focusers for automated focusing.
Astrophotography Ready
The rear focuser features a 1.25-inch internal diameter and M42x0.75 external thread. This allows direct connections to most modern cooled astronomy cameras. This setup is ideal for portable or entry-level astrophotography.
Auto Focuser Compatible
Focuser drawtube offers a 1.25-inch inner diameter with an external M42x0.75 thread—connect cooled cameras (optimized for a 1-inch image circle) or add motor focusers such as the ToupTek AAF or IFR focus stations.
Specifications:
- Aperture: 25 mm
- Focal Length: 100 mm
- Focal Ratio: f/4
- Optical Design: 4-element, 2-group PAPO (1 ED glass element)
- Focuser Type: 1.25" Rack & Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Spot Diagram
| Manufacturer | ToupTek |
|---|---|
| Telescope Focal Length | Up to 300mm |
- 1x GS100AR
- 1x Tube ring and dovetail
- 1x Dust cap
- 1x Packing box
- Ultra compact 25mm aperture, 100 mm focal length and fast f/4 focal ratio
- Self flattening, APO 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 manual focus with Rack & Pinion focuser
- Designed as a flexible accessory that adapts to a wide range of astronomy equipment
ToupTek GS Series Guide Scopes: Precision Guiding, Superior Image Quality!
The ToupTek GS Series 100mm f/4 Guide Scope is designed to be more than a traditional guide scope. Featuring an APO four-element, 2-group self-flattening PAPO design with ED glass and an integrated flat-field optical system, these versatile compact scopes deliver pinpoint stars for accurate guiding while also being capable of visual observing and entry-level astrophotography. With an 25mm aperture and 100mm focal length, the GS Series provides bright, sharp performance in a compact and lightweight package ideal for portable imaging setups.
The precision rack-and-pinion focuser (AR) models provide smooth, repeatable focusing with increased load capacity, making them ideal for guide cameras, planetary cameras, and even automated focusing systems. Combined with lightweight CNC-machined aluminum construction, a modular design, and broad accessory compatibility, the GS Series offers a powerful and flexible solution for astrophotographers looking to get the most from every clear night.
GS Series Standout Features!
Broad Compatibility
The GS series guide scopes are ready for a wide range of accessories. High-transmission coatings and fully baffled interiors preserve contrast, whether you attach cameras, focusers, or diagonals. Supporting high-quality imaging with a 1-inch and smaller guide or planetary cameras.
Filter Threading
The front of the GS100 features a M48x0,75 threading to allow use of standard 2-inch mounted filters for mono or color imaging. Filter wheels can be mounted directly to the front using a M54-M48 step-down adapter.
Seamless Integration
The Inlcuded mini dovetail base provides multiple M6 threaded holes plus a 3/8-16 port for quick attachment to tripods or equatorial mounts.
Robust Rack & Pinion
Rack-and-pinion focuser (AR version): paired with the FSB-125R gear focuser. Bearing-guided gear drive increases load capacity and precision, and it supports ToupTek AAF or third-party motor focusers for automated focusing.
Astrophotography Ready
The rear focuser features a 1.25-inch internal diameter and M42x0.75 external thread. This allows direct connections to most modern cooled astronomy cameras. This setup is ideal for portable or entry-level astrophotography.
Auto Focuser Compatible
Focuser drawtube offers a 1.25-inch inner diameter with an external M42x0.75 thread—connect cooled cameras (optimized for a 1-inch image circle) or add motor focusers such as the ToupTek AAF or IFR focus stations.
Specifications:
- Aperture: 25 mm
- Focal Length: 100 mm
- Focal Ratio: f/4
- Optical Design: 4-element, 2-group PAPO (1 ED glass element)
- Focuser Type: 1.25" Rack & Pinion
- Material: Aluminum alloy
- Coatings: multi-layer AR
Spot Diagram
Other Information
- Country of Manufacture: China
| Manufacturer | ToupTek |
|---|---|
| Telescope Focal Length | Up to 300mm |
- 1x GS100AR
- 1x Tube ring and dovetail
- 1x Dust cap
- 1x Packing box
ToupTek 25mm f/4 ED PAPO Guide Scope with Rack & Pinion Focuser