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

Description

Optical Glass Achromatic Objective Lens Concave&Convex Lens for DIY Telescope
Model
Actual Diameter
Focal Length
Focal ratio
Coating
60mm
62mm
700mm
F11.6
Blue Film
70mm
72mm
500mm
F7.1
Blue Film
80mm
83mm
600mm
F7.5
Green Film
104mm
106mm
600mm
F5.7
Blue Film
The eyepieces and the zenith mirror adapter are all mount size 31.7mm, 1.25inch
Packaging List:
1, only DIY objective lens,    you will receive the only lens,
2, Lens & PL20 Eyepiece,    you will receive the lens and 1pc PL20 eyepiece,
3, Lens & PL25 Eyepiece,    you will receive the lens and 1pc PL25 eyepiece,
4, Groups for DIY Telescope,   you will receive the lens, 1pc PL20 eyepiece, 1pc
Focusing seat and 1pc zenith mirror adapter
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.
Celestron eyepieces offer a 43º apparent field of view, perfect for the Moon, planets, and a plethora of deep-sky objects. The premium four-element optical set is finished with multiple layers of high-transmission coatings for clear, sharp images. The edges of the optics are blackened for increased contrast.
The eyepiece body is made of aluminum. A two-step anodizing process results in a beautiful finish that resists reflections and glare. Each eyepiece in the includes a black rubber eyecup. It can be left up or folded down for better observations while wearing eyeglasses. Models with a longer barrel (15mm, 32mm, 40mm) include a rubberized grip for non-slip handling during observing sessions. The insert barrel is threaded to accept 1.25” filters.
eyepieces offer a quality 4-element Plössl optical design at a super affordable price
Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
Beautiful aluminum barrels and blackened lens edges prevent internal reflections
1.25” barrels are threaded to accept filters