203mm Parabolic Mirror Lens for Newtonian Reflection Telescope Primary Mirror

Description

Newtonian reflection astronomical telescope Primary Mirror Dia.203
Specification
Caliber: 203mm,
Focal length: 800, 1000,1200,1600 (
opti
onal
)
Primary mirror, aluminum plating and protective film
The parabolic surface accuracy PV is guaranteed to be better than 1/10 of the wavelength of the light wave,
and the spherical aberration is less than 1/15 of the wavelength.
The lens blank is made of K9, with a diameter of 203mm,
This high-precision parabolic mirror has been recognized by many astronomy enthusiasts, scientific research institutes, and optical manufacturers.
With 84% aluminum film and silicon dioxide protective film, the film can be used for 8-10 years under moisture-proof storage.
Return or Exchange
If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back.
Please contact me before you return it.
If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item.
If item is defective after 3 months, you can still send it back to us.
We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.
Policies
We are not responsible for any custom duty or import tax.
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Shipping
We Ship to Worldwide. Please contact with us if didn't find your country.
Items will be shipped within 1-10 business days on payment received.
Delivery time depends on destination and other factors, it may takes up to 20 business days.