D130F650 Newton Reflection Primary Mirror for DIY Astronomical Telescope

Key Benefits

• 130mm diameter provides a large light-gathering area for detailed views of deep-sky objects
• 650mm focal length offers a moderate focal ratio suitable for both planetary and deep-sky observation
• Spherical surface simplifies fabrication for DIY builders with basic polishing tools
• 8mm thickness ensures rigidity and reduces thermal distortion during use
• Aluminum coating with protective film maintains high reflectivity and resists oxidation

Application Scenarios

• Building a Newtonian reflector telescope from a kit or custom components
• Educational astronomy projects in schools or university physics labs
• Amateur telescope assembly for visual observation of planets, stars and nebulae
• DIY telescope construction with a focus on hands-on optical alignment and testing
• Replacing a damaged primary mirror in an existing Newtonian telescope

Who It Is For

• Amateur astronomers building telescopes from scratch
• Schools and universities teaching optics and astronomy principles
• STEM education programs requiring hands-on telescope construction
• Hobbyists working on custom telescope designs with modular components
• DIY telescope builders using standard mirror cell and focuser systems

Problems It Solves

• A standard spherical mirror is easier to polish and test than a parabolic one, reducing the skill barrier for DIY builders
• The 130mm diameter balances light collection with manageable size and weight for home-built telescopes
• The 650mm focal length provides a usable field of view without requiring a very long tube
• The 8mm thickness prevents warping under temperature changes during observing sessions
• The aluminum and protective film coating ensures long-term reflectivity without frequent re-coating

Technical Features

• Spherical primary mirror surface for ease of fabrication and testing
• Focal length of 650mm with a 130mm diameter for a 5:1 focal ratio
• Secondary mirror holder with 35mm minor axis for standard 1.25" or 2" focuser compatibility
• 8mm thickness provides mechanical stability and thermal resistance
• Aluminum coating with protective film for high reflectivity and environmental protection
• Designed for use in Newtonian reflector telescope configurations

Specifications

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Customization Options

• Available in standard spherical form only; no parabolic or aspheric variants
• No custom coatings or edge treatments offered
• No mounting or cell integration; sold as a bare mirror for user assembly

Comparison With Other Options

Use Guide

• Handle the mirror only by the edges to avoid fingerprints on the optical surface
• Clean the surface only with a soft brush or compressed air; avoid solvents
• Mount the mirror in a cell with proper support points to prevent stress
• Align the secondary mirror so its center is on the optical axis of the primary
• Test the mirror's figure using a Ronchi tester or star test before final assembly