ToupTek Astro FS-250 45mm f/5.6 Doublet Guide Scope with Rack & Pinion Focuser

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This finder scope is being discontinued and replaced with the ToupTek GS Series 250mm f/5 Guide Scope.
ToupTek FS-250 Series Finder Scope: Precision Guiding, Superior Image Quality!
Professional guiding telescopes with premium achromatic optics, designed for precise astronomical guiding with exceptional optical performance and mechanical stability. The FS-250AR find scopes feature a two-piece double-glued achromatic optical design with multi-layer coating technology to maximize light transmission. Built with precision CNC-machined aluminum alloy construction, these scopes ensure both exceptional stability and elegant aesthetics for demanding astrophotography applications.


Installation Guide


-
Camera Installation
Insert the guide camera directly into the 1.25-inch interface at the end of the find scope, then tighten the three-point locking screw for secure mounting. -
Mounting Configuration
The find scope rings feature M5 threaded holes on top and sides for mounting additional equipment. The dovetail plate includes multiple M6 threaded holes and a 3/8-16 British thread for tripod connection. -
System Integration
Compatible with mainstream guide cameras through 1.25" interface or M42×0.75 thread connection for cooling/planetary cameras.


Lunar Surface Photography
Captured with FS-250 Series and ToupTek I3ISPM08300KPA camera, showcasing exceptional detail resolution and contrast in lunar surface features.


Terrestrial Photography
Demonstrating the versatility of the FS Series for terrestrial observation with sharp detail and excellent color reproduction across the field of view.


Wide Range of Imaging Setups
Delivering precise guiding and stable focusing for various astrophotography setups.
Specifications
Finderscope
- Aperture: 45mm
- Focal Length: 250mm
- Focal Ratio: F/5.6
- Focuser Type: 1.25" Rack & Pinion
- Optical Design: Two-piece double-glued achromatic
- Coating: Multi-layer anti-reflection coating
- Camera Interface: 1.25" / M42x0.75 thread
- Focus Stroke: 35mm
- Construction: CNC machined aluminum alloy
Rack & Pinion Focuser
- Gear rack and pinion system
- Higher focusing precision
- Laser-marked stroke scale
- Chamfer knurled handwheel
Dimensions
FS-250AR Finder Scope


FSB-125R Rack & Pinion Focuser


Other Information
- Country of Manufacture: China
ToupTek FS-250 Series Finder Scope: Precision Guiding, Superior Image Quality!
Professional guiding telescopes with premium achromatic optics, designed for precise astronomical guiding with exceptional optical performance and mechanical stability. The FS-250AR find scopes feature a two-piece double-glued achromatic optical design with multi-layer coating technology to maximize light transmission. Built with precision CNC-machined aluminum alloy construction, these scopes ensure both exceptional stability and elegant aesthetics for demanding astrophotography applications.


Installation Guide


-
Camera Installation
Insert the guide camera directly into the 1.25-inch interface at the end of the find scope, then tighten the three-point locking screw for secure mounting. -
Mounting Configuration
The find scope rings feature M5 threaded holes on top and sides for mounting additional equipment. The dovetail plate includes multiple M6 threaded holes and a 3/8-16 British thread for tripod connection. -
System Integration
Compatible with mainstream guide cameras through 1.25" interface or M42×0.75 thread connection for cooling/planetary cameras.


Lunar Surface Photography
Captured with FS-250 Series and ToupTek I3ISPM08300KPA camera, showcasing exceptional detail resolution and contrast in lunar surface features.


Terrestrial Photography
Demonstrating the versatility of the FS Series for terrestrial observation with sharp detail and excellent color reproduction across the field of view.


Wide Range of Imaging Setups
Delivering precise guiding and stable focusing for various astrophotography setups.
Specifications
Finderscope
- Aperture: 45mm
- Focal Length: 250mm
- Focal Ratio: F/5.6
- Focuser Type: 1.25" Rack & Pinion
- Optical Design: Two-piece double-glued achromatic
- Coating: Multi-layer anti-reflection coating
- Camera Interface: 1.25" / M42x0.75 thread
- Focus Stroke: 35mm
- Construction: CNC machined aluminum alloy
Rack & Pinion Focuser
- Gear rack and pinion system
- Higher focusing precision
- Laser-marked stroke scale
- Chamfer knurled handwheel
Dimensions
FS-250AR Finder Scope


FSB-125R Rack & Pinion Focuser


| Manufacturer | ToupTek Astro |
|---|---|
| Telescope Focal Length | Up to 300mm |
- 1x Protective packaging box (32cm × 11.5cm × 10cm)
- 1x FS-250 Find Scope with rings, dovetail plate, and selected focuser
- 1x Protective dust cover for optical elements

This finder scope is being discontinued and replaced with the ToupTek GS Series 250mm f/5 Guide Scope.
ToupTek FS-250 Series Finder Scope: Precision Guiding, Superior Image Quality!
Professional guiding telescopes with premium achromatic optics, designed for precise astronomical guiding with exceptional optical performance and mechanical stability. The FS-250AR find scopes feature a two-piece double-glued achromatic optical design with multi-layer coating technology to maximize light transmission. Built with precision CNC-machined aluminum alloy construction, these scopes ensure both exceptional stability and elegant aesthetics for demanding astrophotography applications.


Installation Guide


-
Camera Installation
Insert the guide camera directly into the 1.25-inch interface at the end of the find scope, then tighten the three-point locking screw for secure mounting. -
Mounting Configuration
The find scope rings feature M5 threaded holes on top and sides for mounting additional equipment. The dovetail plate includes multiple M6 threaded holes and a 3/8-16 British thread for tripod connection. -
System Integration
Compatible with mainstream guide cameras through 1.25" interface or M42×0.75 thread connection for cooling/planetary cameras.


Lunar Surface Photography
Captured with FS-250 Series and ToupTek I3ISPM08300KPA camera, showcasing exceptional detail resolution and contrast in lunar surface features.


Terrestrial Photography
Demonstrating the versatility of the FS Series for terrestrial observation with sharp detail and excellent color reproduction across the field of view.


Wide Range of Imaging Setups
Delivering precise guiding and stable focusing for various astrophotography setups.
Specifications
Finderscope
- Aperture: 45mm
- Focal Length: 250mm
- Focal Ratio: F/5.6
- Focuser Type: 1.25" Rack & Pinion
- Optical Design: Two-piece double-glued achromatic
- Coating: Multi-layer anti-reflection coating
- Camera Interface: 1.25" / M42x0.75 thread
- Focus Stroke: 35mm
- Construction: CNC machined aluminum alloy
Rack & Pinion Focuser
- Gear rack and pinion system
- Higher focusing precision
- Laser-marked stroke scale
- Chamfer knurled handwheel
Dimensions
FS-250AR Finder Scope


FSB-125R Rack & Pinion Focuser


Other Information
- Country of Manufacture: China
| Manufacturer | ToupTek Astro |
|---|---|
| Telescope Focal Length | Up to 300mm |
- 1x Protective packaging box (32cm × 11.5cm × 10cm)
- 1x FS-250 Find Scope with rings, dovetail plate, and selected focuser
- 1x Protective dust cover for optical elements


ToupTek Astro FS-250 45mm f/5.6 Doublet Guide Scope with Rack & Pinion Focuser
