D114f900 Newton Reflective Astronomical Telescope Large Round Glass Aluminum Reflective Mirror for Telescope

• Warranty: 3years
• Usage: Optical
• Type: D114f900
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: D114f900
• Transmittance: No
• Shape: Spherical
• Material: K9 Bk7
• Lenses Color: Clear
• Certification: ISO9001
• Customized: Customized
• Coating: Customer Request
• Focal Length: 900mm/Custom Request
• Color: Transparent
• Surface Quality: 60/40
• Clear Aperture: 85% ~95%
• Customized Support: OEM
• Structure: Plano-Convex
• Application: Optical Equipment
• Diameter: 114mm
• Flatness: 1/4lambda
• Transport Package: Vacuum Packaging
• Specification: custom
• Trademark: JLGD
• Origin: Henan, China
• HS Code: 9001909090
• Package Size: 18.00cm * 12.00cm * 10.00cm
• Package Gross Weight: 0.500kg
• Lead Time: 7 days (1 - 10 pieces) ; 20 days (11 - 200 pieces) ; To be negotiated ( > 200 pieces)

Product Description

D114f900 Newton Reflective Astronomical Telescope Large Round Glass Aluminum Reflective Mirror For Telescope

Product Description

Production Name	biconvex lens
Surface Quality	60/40,40/20
Material	optical k9 glass
Diameter	114mm/Custom request
Focal Length	900mm/Custom request
coating	Aluminum/Custom request

D114F900 main mirror
D114F900 main mirror, 114mm aperture, 900mm focal length, spherical mirror telescope main mirror, the thickness is about 14mm, thethickness may vary slightly depending on the manufacturer's batch, we will not explain it separately, don't mind if you take it,the surface is aluminized film and protective film , 25mm short axis (short side diameter) secondary mirror.

 

 

Advantages:

Because the cost of reflectors is much lower than that of lenses, for large-aperture telescopes, they are often made reflective rather than bulky refractive. The portable design of the reflective telescope, although the lens barrel is only 500mm, but the focal length can reach 1000mm. The focal ratio of the Newtonian mirror can reach f / 4 to f / 8, which is very suitable for observing those faint extragalactic galaxies and nebulae. Sometimes it is also appropriate to use this telescope to observe the moon and planets. If you want to take pictures, it is very good to use Newtonian telescope. But it is a little more troublesome to
use than folding telescope. The Newtonian structure can converge the light well and get a very bright image at the focal point.

 

Disadvantages:

Open lens-type air can be circulated, which not only affects the stability of imaging, but also some dust will enter the lens tube with the flowing air and attach to the objective lens. In the long run, the coating on the surface of the objective lens will be
damaged to make it reflective decline. Since the objective lens of this structure is relatively easy to break, you need to be careful when using it. For off-axis light, the Newtonian telescope produces coma. This type of telescope is not suitable for
observation of ground landscape. Newton-style telescopes usually have large diameters and large volumes, so they are expensive.
Due to the addition of a secondary plane mirror, some light will be lost.

 

Instructions for cleaning mirror surface:

First blow off the dust that can be blown away with a blower, then use a good quality cotton wool to dip alcohol and gently wipe the mirror surface. After drying, look at the light source from the side to see if there are some cotton filaments or water stains left on it Only use some good quality lens cleaning cloth to wipe gently (be careful, otherwise it will affect your telescope).

Detailed Images

 

 

 

 

We can customized all kinds of optical lens and prisms according to the drawing and your request.

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Packing & Delivery

Packaging & Delivery.


Packaging Details:

Inner packing-------special protective packing for optical products.

Outer packing------carton, Shock absorption material and bubble wrap

China factory spherical optical large convex lens/flat convex lens


Delivery Time
7-20 days


Delivery: Generally, we use the FedEx, DHL, UPS, TNT, SF, etc. Please note it before delivery. Transit time depends on the express and destination. By the way, we would re-check all the details before delivery.

Our Company

Our company is a high-tech enterprise specializing in the processing and customization of optical glass prism and lens.
Our company is located in Wolong District, Nanyang City, Henan Province.
The company was registered in 2001 and is a professional manufacturer of optical lens prisms.
The company has optical design, precision optical processing, optical coating and other technologies and processes,
and has a complete production line and various advanced processing, testing equipment,
complete enterprise management system and quality management system.
Our working area is more than 1000 quare meter, now about 50 employees.
The company is committed to providing customers with small and medium quantities and large quantities of optical components.
After years of hard work, the company has become the preferred supplier of many optoelectronic enterprises all over the world.

FAQ

Q:Could you customize our logo on the product ?
A:Yes, we can customize your logo as your demand .


Q:What's your MOQ?
A:Generally, our MOQ is 1000pcs. But we accept lower quantity for your trial order. Please free to contact us.


Q:Hong long does it need to make production ?
A:As usual, our production time is 7-20days.


Q:What's your payment ?
A: 50% as deposit, and 100% before delivery. We'll show you the photos of the products and packages before you pay the balance.


Q:What's your delivery way?
A: EXW, FOB, CFR


Q:How to proceed an order ?
A: Firstly, let us know your requirements or application. Secondly, we quote according to your requirements or our suggestions.Thirdly, customer confirms the samples and places deposit for formal order.


Q:What package do you provide ?
A: Generally, we pack our goods in special protective packing for optical products for inner packing, anti-shock material with bubble wrap for the carton.

Certifications