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203-610mm Newton Parabolic Reflector Mirror 10-24 inch Telescope mirror For Sale

203-610mm Newton Parabolic Reflector Mirror  10-24 inch Telescope mirror
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203-610mm Newton Parabolic Reflector Mirror 10-24 inch Telescope mirror:

This product requires a customization cycle of about 15 days. If it is not acceptable, please do not place an order
The price listed is the price of a single primary lens, not including the secondary lens, matching the secondary lens can be around 60 mm. Sub-reflectors must be purchased with high precision.
Lens features
The parabolic Newtonian reflector main lens, with a parabolic accuracy of PV ≤ 1/10 wavelength, spherical aberration ≤ 1/15 wavelength, and RMS ≤ 1/30, is the best precision reflector lens available on the market. The k9 optical glass is made of aluminized film and silicon dioxide protective film, with reflectivity of 90% - 92%. It can be kept dustproof, moisture-proof and bump proof for about 10 years. The lens has high accuracy and good quality, and is highly favored by enthusiasts, research institutes, and optical units.
Special instructions ☜
Some lenses may have slight dust and very slight scratches on the coating surface. We guarantee that it will not affect the use. If you mind, do not order
Customized instructions
1. You can customize lenses with a diameter of 114-610 millimeters and a focal ratio of f2-10 (focal length less than 3000 millimeters). Common caliber ranges from 114-127-153-203-254-305-355-406-508-610 millimeters.2. For customized regular specifications lenses (153-406mm, focal ratio F4-6 lenses), a deposit of 50% of the lens price is required. PayPal and credit card payments are supported, and production begins after the deposit is paid. Sizes below 153mm require bulk customization and do not accept single piece customization services.3. For customized lenses with special specifications (lenses with special aperture and conventional aperture focal ratios less than 4 or greater than 6), a deposit of 80% of the lens price is required. The payment method is the same as above.4. The normal customization cycle is around 15-60 days. If there is a large quantity of customization, the epidemic, or the weather is too cold, it may be slightly delayed.5. Only regular parabolic primary lenses and spherical primary lenses are customized, without hyperbolic or other lenses, and no lens punching service is provided.6. All lens prices include coating, protective film, and shipping.7. After the deposit is paid, any form of return or exchange is not supported during the ordering process, otherwise the deposit will be invalid
Payment Terms
Payment must be received within 7 business days of auction closing.All our items will be shipped to buyer\'s payment address. So please check your shipping address before you make the payment.Shipping Terms
Normally, we will arrange the shipment within 2 business days of receipt of payments.A tracking number will be emailed to the buyer at the time of shipment.Feedback
If you are satisfied with our product and service, please leave 5 star positive feedback.However, if you are unhappy with the item or our service,please contact us before you leave the negative feedback.
About US
We are Skyoptikst Optical Technology CO., LTD. More information,please click our web site.If you have any questions please contact us.
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203-610mm Newton Parabolic Reflector Mirror  10-24 inch Telescope mirror picture

203-610mm Newton Parabolic Reflector Mirror 10-24 inch Telescope mirror


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