254mm Parabolic Primary Mirror f Newtonian Reflection Telescope

Newtonian reflection astronomical telescope Primary Mirror Dia.254 Specification Caliber: 254mm, Focal length: 1000mm (F4),1200mm (F5) 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 254mm, 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. Payment: --------------------------------------------------------------------- 1. Payment must be received within 7 business days of auction closing. 2. If you have bought multiple items from me, you can send me one payment for all the items instead of paying for them individually. 3. NOTE: Import duties, taxes and chargers are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding buying. Delivery details --------------------------------------------------------------------- 1. We Ship to Worldwide. Please contact with us if didn't find your country. 2. Items will be shipped within 1-10 business days on payment received. 3. Delivery time depends on destination and other factors, it may takes up to 20 business days. Policy: --------------------------------------------------------------------- 1. We are not responsible for any custom duty or import tax. 2. We will leave positive feedback after receiving the payment. Please contact us if you are not satisfied with the item after receive it. 3. All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible. 4. Serious Buyer Only! Please place bid only if you agree with all the terms. 5. If you have any problems or concerns whatever with your order or products, please message us and give us a chance to assist you before you leave any feedback. We believe we can produce a positive outcome to any situation and will work hard to earn your praise.

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