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Primary Mirror Edge Aperture Mask Explore Scientific PN210/800
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  • Primary Mirror Edge Aperture Mask Explore Scientific PN210/800
  • Primary Mirror Edge Aperture Mask Explore Scientific PN210/800

Primary Mirror Edge Aperture Mask Explore Scientific PN210/800

€21.00
Tax included

Get pin-sharp, halo-free stars on your Explore Scientific PN210/800 fast Newtonian astrograph (f/3.8).

  • 🎯 Diffraction Halo Eliminator: Covers the raw unpolished mirror bevel edge without reducing clear aperture light collection.
  • 🛡️ Soft Felt Scratch-Guard: Internal rim lined with non-abrasive felt padding to protect optical mirror coatings from contact.
  • 🔒 Zero Optical Pinch: Precise slip-fit sleeve eliminates point pressure to prevent induced mirror trefoil astigmatism.
  • 💎 Opaque Black PETG Matrix: Moisture and cold-resistant polymer delivering absolute light-trap performance.
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En cours d'impression

Primary Mirror Edge Aperture Mask — Explore Scientific PN210/800

The ultimate mechanical fix for crisp, halo-free stars on fast f/3.8 Newtonian optics

The Explore Scientific PN210/800 is a fast, highly capable Newtonian astrograph running at an aggressive f/3.8 focal ratio. However, on fast mirrors, light reflecting off the raw, unpolished outer bevel edge of the primary glass substrate frequently generates unwanted glare. The result on raw sub-exposures? Distorted star halos and flare flare flare flares surrounding bright stars, washing out deep-sky background contrast.

🔬 Targeted Mechanical Masking for Fast Primary Optics

🛑 Stray Light Suppression

An edge aperture masking ring is the definitive hardware solution used by experienced Newtonian imagers. By cleanly masking off the outer bevel edge without encroaching on clear optical glass, it stops stray reflections right at the source, yielding darker sky backgrounds and circular star profiles.

🛡️ Zero Trefoil / Stress-Free Fit

Tailored directly to match the 210mm primary mirror housing dimensions of Explore Scientific, the ring slides into place smoothly. It seats evenly without applying localized clamping points, guaranteeing zero optical pinched-glass astigmatism.

Bespoke Protective Engineering for Primary Mirrors

Handling primary mirror optics demands maximum care. Our design incorporates strict protective measures for your glass substrate:

  • Bespoke PN210 Alignment: Modeled with micrometric accuracy to match the 210mm mirror cell. The ring seats flush over the outer edge without introduce mechanical slop or force.
  • Integrated Anti-Scratch Soft Felt Liner: To safeguard delicate reflective coatings during installation, the inner flange is fully lined with a non-abrasive soft felt ring. It absorbs friction, prevents direct polymer-to-glass contact, and secures a snug friction hold.
  • High-Density Matte Black PETG: Printed using industrial-grade PETG composite, offering high resistance to severe night humidity and freezing cold. Unlike generic PLA prints that warp under vehicle storage heat, our PETG maintains dimensional stability for years. Its 100% opaque matte black finish acts as an internal light-trap.

"At f/3.8, any raw bevel edge defect on the primary mirror instantly shows up as large, irregular halos around bright stars like Alnitak or Vega. This edge masking ring is a crucial mechanical upgrade for the PN210 to clean up star profiles without sacrificing valuable light gathering power."

— Vincent, Founder of Azur3dprint

Technical Specifications

  • Strict Compatibility: Explore Scientific PN210/800 primary mirror (210mm diameter, f/3.8 focal ratio).
  • Function: Elimination of primary mirror edge bevel diffraction halos.
  • Material Matrix: High-density, dew and UV-resistant Matte Black PETG polymer.
  • Internal Shielding: Continuous soft non-abrasive felt scratch-guard insert ring.
  • Mount Style: Stress-free outer sleeve slip-fit over mirror cell lip.
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Data sheet

Colour
Black
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