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Home / Products / Astronomy Mirror / D203F1600 Newton Reflector Objective Pri
D203F1600 Newton Reflector Objective Primary Mirror Astronomical Telescope

D203F1600 Newton Reflector Objective Primary Mirror Astronomical Telescope

D203F1600 is a Newton reflector objective primary mirror for astronomical telescopes with a 203 mm caliber and 1600 mm focal length. The mirror is spherical, aluminized with a protective film, and designed for DIY telescope builders. It includes a 40 mm minor axis (short side diameter) secondary mirror for use in standard Newtonian configurations.

  • 203 mm aperture provides high light-gathering capacity for deep-sky and planetary observation
  • 1600 mm focal length enables long focal ratio systems suitable for high-magnification imaging
  • Spherical mirror design simplifies fabrication and alignment for amateur telescope makers
  • Aluminized surface with protective film ensures high reflectivity and durability
  • Integrated 40 mm minor axis secondary mirror supports standard Newtonian optical alignment
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Technical features

  • Caliber (diameter): 203 mm
  • Focal length: 1600 mm
  • Mirror type: Spherical
  • Surface coating: Aluminized film with protective layer
  • Secondary mirror minor axis: 40 mm (short side diameter)
  • Designed for Newtonian reflector telescope systems
  • Intended for DIY assembly and custom telescope builds

Who it is for

  • Amateur telescope makers building Newtonian reflectors
  • Educational institutions teaching optics or astronomy
  • Hobbyists sourcing precision mirror components for custom telescope builds

Specifications

Caliber203 mm
Focal Length1600 mm
Mirror TypeSpherical
Surface CoatingAluminized with protective film
Secondary Mirror Minor Axis40 mm
ApplicationNewtonian Reflector Telescope

Use guide

  • Use only in Newtonian reflector telescope designs with proper secondary mirror support
  • Ensure the secondary mirror holder is compatible with the 40 mm minor axis
  • Handle with care to avoid scratches on the aluminized surface
  • Clean only with compressed air or soft brush; avoid direct contact with the coating

FAQ

What type of telescope is this mirror for?
Designed for Newtonian reflector telescopes with a 203 mm aperture and 1600 mm focal length.
Is the mirror parabolic or spherical?
It is a spherical mirror, not parabolic.
Can I use this mirror for astrophotography?
Yes, but spherical mirrors introduce spherical aberration; a corrector plate is recommended for sharp imaging.
What is the minor axis of the secondary mirror?
40 mm (short side diameter), standard for Newtonian systems of this size.
Is the coating durable?
Yes, the aluminized surface has a protective film to prevent oxidation and damage during handling and storage.

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