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Product Description
Product Description
Build your own high-performance Newtonian reflector telescope with this premium 203mm (8-inch) parabolic primary mirror. Designed specifically for DIY astronomy enthusiasts and visual observers, this mirror offers outstanding optical quality at an excellent value.
Key Features & Specifications:
| Specification | Details |
|---|---|
| Aperture | 203mm (8") – Gathers ample light for stunning views of planets, nebulae, and galaxies |
| Focal Length | 750mm (F/3.7) – A fast focal ratio ideal for rich-field deep-sky viewing and astrophotography |
| Optical Figure | Parabolic – Eliminates spherical aberration, delivering sharp, diffraction-limited images |
| Surface Accuracy | PV < 1/6λ – Each mirror is individually inspected and guaranteed to meet this high standard |
| Weight | 1780g – Solid yet manageable for various DIY tube designs |
| Thickness | 20mm – Provides excellent rigidity and thermal stability |
| Condition | Brand New |
What's Included:
1x 203mm F/3.7 (D203F750) Parabolic Primary Mirror
Interferometer Test Report (After receiving the item, contact the seller to send an electronic document)
📌 Important Note on the Test Report:
The interferometer image shown in this listing is a representative sample for illustration purposes. Each mirror is supplied with its own test report, and the actual numerical data will vary from piece to piece. All mirrors are, however, strictly guaranteed to have a surface accuracy of PV < 1/6 wavelength. The sample picture does not represent the exact report you will receive, but it demonstrates the type of quality control we perform.
Please Note: This listing is for the primary mirror only. Secondary mirror, spider vanes, focuser, and optical tube are NOT included.
Why Choose This Mirror?
| Feature | Benefit |
|---|---|
| DIY Newtonian Project | The ideal core component for building your own custom Newtonian reflector from scratch |
| Fast F/3.7 Focal Ratio | Optimized for rich-field deep-sky observing – brighter images, wider fields of view |
| Guaranteed Quality | Every mirror comes with its own interferometry data, so you know exactly what you're getting |
| Ready to Install | Perfect for upgrading an existing telescope or starting a new astro-project |
Perfect For:
Amateur astronomers
Telescope makers
DIY enthusiasts
Anyone looking to create a powerful, personalized deep-sky observation instrument
Recommended Secondary Mirror Size:
For optimal performance with the D203F750 (F/3.7), a secondary mirror with minor axis of 63-70mm is recommended (sold separately).
📦 Shipping: Carefully packaged to ensure safe delivery.
All our items will be shipped to buyer's payment address.
So please check your shipping address before you make the payment.
If there is a quality issue with the product within 30 days,
we offer a free return service