Nakoh 0.65x Reducer for 60GT Astrograph
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- Specifically engineered for the Nakoh 60GT astrograph with an easy slide-in connection.
- Reduces focal length from 360 mm to 234 mm, and increases light gathering power to f/3.9.
- Increases focal length while preserving image quality and color correction.
Nakoh 60GT 0.65x Reducer for Ultra-Fast f/3.9 Imaging
Give your NAKOH 60GT the ultimate boost in deep-sky imaging performance with the dedicated 0.65x reducer designed specifically for this compact astrograph. Engineered to dramatically shorten the telescope’s focal length from 360 mm to approximately 234 mm and accelerate the focal ratio to f/3.9, this accessory expands your field of view and cut the exposure times needed—making large nebulae, star fields, and large celestial targets more accessible than ever! Its quadruplet optical design, including a high-quality SD (Super low dispersion) glass element made in Japan, works to flatten the field and suppress aberrations, delivering crisp, round stars across the entire 44 mm full-frame image circle and elevating the 60GT’s astrophotography capabilities to a whole new level.
Check out how the Nakoh Reducer and Flattener are setup with the 60GT!
The 0.65x Reducer and 60GT in Action!
M45 by Qiang
NGC 2237 by Zhang Yuhang
Fast Focal Ratio
When used with the 60GT, it accelerates the focal ratio from f/6 to f/3.9, dramatically reducing exposure time and boosting efficiency in deep‑sky astrophotography. The effective focal length shortens to 234 mm, widening the field of view to make capturing large deep‑sky objects—such as the Orion Nebula (M42), Andromeda Galaxy (M31), and North America Nebula—more accessible than ever.
Uniform Flat Field
Precisely corrects field curvature and coma to deliver uniformly sharp, round stars across the entire 44mm full‑frame image circle—from center to edge.
Advanced Optics Design
Incorporates a quadruplet lens design that includes one SD glass element (made in Japan). This configuration effectively suppresses chromatic aberration, ensuring exceptional image quality with high contrast and clarity.
Product Size Diagram / Connection Diagram
- Front Cap
- 60GT 0.65x Reducer Body
- M68 to M54 Adapter: end-interface is M54 male thread.
- M54 to M48 Adapter: end-interface is M48 male thread.
- Rear Cap
Product Size Diagram
Connection Diagram
Specifications
- Optical correction: 0.65x reducer
- Optical Design: Quadruplet (w/ 1x SD glass element)
- Effective focal ratio: F3.9
- Effective focal length: 234 mm
- Image Circle: 44 mm
- Back Focus: 55 mm
- Telescope side thread: M68x1
- Camera side thread: M54x0.75 male or M48x0.75 male (w/ included adapter)
- Dimensions WxDxH: 128x72x72 mm (5.04x2.83x2.83 in)
- Weight: 0.58 kg (1.28 lb)
Other Information
- Country of Manufacture: China
Nakoh 60GT 0.65x Reducer for Ultra-Fast f/3.9 Imaging
Give your NAKOH 60GT the ultimate boost in deep-sky imaging performance with the dedicated 0.65x reducer designed specifically for this compact astrograph. Engineered to dramatically shorten the telescope’s focal length from 360 mm to approximately 234 mm and accelerate the focal ratio to f/3.9, this accessory expands your field of view and cut the exposure times needed—making large nebulae, star fields, and large celestial targets more accessible than ever! Its quadruplet optical design, including a high-quality SD (Super low dispersion) glass element made in Japan, works to flatten the field and suppress aberrations, delivering crisp, round stars across the entire 44 mm full-frame image circle and elevating the 60GT’s astrophotography capabilities to a whole new level.
Check out how the Nakoh Reducer and Flattener are setup with the 60GT!
The 0.65x Reducer and 60GT in Action!
M45 by Qiang
NGC 2237 by Zhang Yuhang
Fast Focal Ratio
When used with the 60GT, it accelerates the focal ratio from f/6 to f/3.9, dramatically reducing exposure time and boosting efficiency in deep‑sky astrophotography. The effective focal length shortens to 234 mm, widening the field of view to make capturing large deep‑sky objects—such as the Orion Nebula (M42), Andromeda Galaxy (M31), and North America Nebula—more accessible than ever.
Uniform Flat Field
Precisely corrects field curvature and coma to deliver uniformly sharp, round stars across the entire 44mm full‑frame image circle—from center to edge.
Advanced Optics Design
Incorporates a quadruplet lens design that includes one SD glass element (made in Japan). This configuration effectively suppresses chromatic aberration, ensuring exceptional image quality with high contrast and clarity.
Product Size Diagram / Connection Diagram
- Front Cap
- 60GT 0.65x Reducer Body
- M68 to M54 Adapter: end-interface is M54 male thread.
- M54 to M48 Adapter: end-interface is M48 male thread.
- Rear Cap
Product Size Diagram
Connection Diagram
Specifications
- Optical correction: 0.65x reducer
- Optical Design: Quadruplet (w/ 1x SD glass element)
- Effective focal ratio: F3.9
- Effective focal length: 234 mm
- Image Circle: 44 mm
- Back Focus: 55 mm
- Telescope side thread: M68x1
- Camera side thread: M54x0.75 male or M48x0.75 male (w/ included adapter)
- Dimensions WxDxH: 128x72x72 mm (5.04x2.83x2.83 in)
- Weight: 0.58 kg (1.28 lb)
- 1x Reducer body
- 1x M68 - M54 adapter
- 1x M54 - M48 adapter
- 1x Front dust cap
- 1x Rear dust cap
- 1x Instruction manual
- 1x Warranty card
- Specifically engineered for the Nakoh 60GT astrograph with an easy slide-in connection.
- Reduces focal length from 360 mm to 234 mm, and increases light gathering power to f/3.9.
- Increases focal length while preserving image quality and color correction.
Nakoh 60GT 0.65x Reducer for Ultra-Fast f/3.9 Imaging
Give your NAKOH 60GT the ultimate boost in deep-sky imaging performance with the dedicated 0.65x reducer designed specifically for this compact astrograph. Engineered to dramatically shorten the telescope’s focal length from 360 mm to approximately 234 mm and accelerate the focal ratio to f/3.9, this accessory expands your field of view and cut the exposure times needed—making large nebulae, star fields, and large celestial targets more accessible than ever! Its quadruplet optical design, including a high-quality SD (Super low dispersion) glass element made in Japan, works to flatten the field and suppress aberrations, delivering crisp, round stars across the entire 44 mm full-frame image circle and elevating the 60GT’s astrophotography capabilities to a whole new level.
Check out how the Nakoh Reducer and Flattener are setup with the 60GT!
The 0.65x Reducer and 60GT in Action!
M45 by Qiang
NGC 2237 by Zhang Yuhang
Fast Focal Ratio
When used with the 60GT, it accelerates the focal ratio from f/6 to f/3.9, dramatically reducing exposure time and boosting efficiency in deep‑sky astrophotography. The effective focal length shortens to 234 mm, widening the field of view to make capturing large deep‑sky objects—such as the Orion Nebula (M42), Andromeda Galaxy (M31), and North America Nebula—more accessible than ever.
Uniform Flat Field
Precisely corrects field curvature and coma to deliver uniformly sharp, round stars across the entire 44mm full‑frame image circle—from center to edge.
Advanced Optics Design
Incorporates a quadruplet lens design that includes one SD glass element (made in Japan). This configuration effectively suppresses chromatic aberration, ensuring exceptional image quality with high contrast and clarity.
Product Size Diagram / Connection Diagram
- Front Cap
- 60GT 0.65x Reducer Body
- M68 to M54 Adapter: end-interface is M54 male thread.
- M54 to M48 Adapter: end-interface is M48 male thread.
- Rear Cap
Product Size Diagram
Connection Diagram
Specifications
- Optical correction: 0.65x reducer
- Optical Design: Quadruplet (w/ 1x SD glass element)
- Effective focal ratio: F3.9
- Effective focal length: 234 mm
- Image Circle: 44 mm
- Back Focus: 55 mm
- Telescope side thread: M68x1
- Camera side thread: M54x0.75 male or M48x0.75 male (w/ included adapter)
- Dimensions WxDxH: 128x72x72 mm (5.04x2.83x2.83 in)
- Weight: 0.58 kg (1.28 lb)
Other Information
- Country of Manufacture: China
- 1x Reducer body
- 1x M68 - M54 adapter
- 1x M54 - M48 adapter
- 1x Front dust cap
- 1x Rear dust cap
- 1x Instruction manual
- 1x Warranty card
Nakoh 0.65x Reducer for 60GT Astrograph