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D130F650 Newton Reflection Primary Mirror for DIY Astronomical Telescope

D130F650 Newton Reflection Primary Mirror for DIY Astronomical Telescope

D130F650 Newton reflection primary mirror is a spherical primary mirror for DIY astronomical telescopes. It has a 130 mm diameter, 650 mm focal length, and is made from aluminum with a protective film. Designed for use in Newtonian telescope builds, it supports custom optical systems and is suitable for amateur and educational astronomy projects.

  • 130 mm diameter and 650 mm focal length for balanced light gathering and compact telescope design
  • Spherical surface profile simplifies fabrication for DIY builders with basic polishing tools
  • Aluminum substrate with protective film resists oxidation and maintains reflectivity over time
  • Lightweight at approximately 580 grams, reducing structural load on telescope mounts
  • Compatible with standard 35 mm minor axis secondary mirrors for 45-degree light redirection
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Technical features

  • Diameter: 130 mm
  • Focal length: 650 mm
  • Surface type: Spherical
  • Material: Aluminum with protective film
  • Weight: Approximately 580 grams
  • Secondary mirror minor axis: 35 mm
  • Secondary mirror thickness: 8 mm
  • Origin: Chinese mainland

Who it is for

  • Amateur astronomers building telescopes from scratch
  • Educational institutions teaching optics and telescope mechanics
  • DIY kit suppliers integrating primary mirrors into telescope assembly packages
  • Hobbyist engineers and makers sourcing optical components for custom telescope designs

Specifications

Diameter130 mm
Focal Length650 mm
Surface TypeSpherical
MaterialAluminum with protective film
WeightApproximately 580 g
Secondary Mirror Minor Axis35 mm
Secondary Mirror Thickness8 mm
OriginChinese mainland
TypeNewton Reflection Primary Mirror

Use guide

  • Use only with a secondary mirror of 35 mm minor axis for proper light path alignment
  • Ensure the telescope tube and focuser are designed to accept a 130 mm mirror diameter
  • Clean only with soft cloth and avoid touching the reflective surface to preserve coating
  • Mount securely using a mirror cell designed for spherical mirrors to prevent deformation

FAQ

What is the focal length and diameter of this mirror?
Focal length is 650 mm, diameter is 130 mm.
Is the mirror spherical or parabolic?
It is a spherical primary mirror.
Can I use this mirror with a 40 mm secondary mirror?
No — it is designed for a 35 mm minor axis secondary mirror. Using a larger one may cause vignetting or misalignment.
What is the weight of the mirror?
Approximately 580 grams.
Is the mirror ready to use out of the box?
Yes — it comes with a protective film and is ready for installation in a Newtonian telescope tube.
Where is this mirror manufactured?
Chinese mainland.

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