Optical Glass Objective Lens Concave & Convex Lens for DIY Achromatic Telescope

Description

Optical Glass Achromatic Objective Lens Concave&Convex Lens for DIY Telescope
Model            Diameter             Focus                Focus ratio                        Film
50mm              51mm              360mm                F7.2                               Blue
60mm              62mm              700mm                F11.6                             Blue
70mm              72mm              500mm                F7.1                               Blue
80mm              83mm              600mm                F7.5                               Green
Delivery details
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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:
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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.
On Nov-11-20 at 19:10:20 PST, seller added the following information: