- Home Page /
- Electronics /
- Camera /
- Binoculars & Scopes /
- Telescopes /
- Reflectors /
- Newtonian Reflector telescoe Mirror, DIY Astr...
0 ratings
Item #:
90247793
Newtonian Reflector telescoe Mirror, DIY Astronomical Telescopes Telescope Secondary Mirror (70MM)
Item #:
90247793
€ 28
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Sunday, August 02
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Buy Now Pay Later
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High-Quality Mirror
Crafted from premium glass, this 25mm secondary mirror ensures excellent light reflection and clarity, providing sharp images for a superior astronomical viewing experience.
Customizable Kits
Ideal for DIY enthusiasts, this telescope mirror allows for personalized assembly, making it perfect for building custom telescopes tailored to individual preferences and needs.
Compact Size
With a compact 25mm design, this mirror is lightweight and easy to handle, making it suitable for portable telescope setups without sacrificing performance in astronomical observations.
Product Details
- Reflected at: 92% ；Coating, aluminizing and protective film
- Suitable for DIY telescopes
- Surface accuracy： 1/10 λ
| Eye Piece Lens Description | Barlow |
| Mount | Equatorial Mount |
| Focus Type | Auto Focus |
| Finderscope | Reflex |
| Zoom Ratio | 1.2:1 |
| Optical-Tube Length | 11 Millimeters |
| Objective Lens Diameter | 20 Millimeters |
| Item Dimensions D x W x H | 0.1"D x 0.02"W x 0.1"H (0.3 x 0.1 x 0.3 cm) |
| Brand | NYJLGD |
| Manufacturer | NYJLGD |
| UPC | 726189212118 |
| Manufacturer Part Number | FUJIGN |
| Built-In Media | 1 x Secondary mirror |
| Optical Tube Length | 11 Millimeters |
| Telescope Mount Description | Equatorial Mount |
| Product Dimensions (L x W x H) | 0.1"D x 0.02"W x 0.1"H (0.3 x 0.1 x 0.3 cm) |
What's in the box
1 x Secondary mirror
Who Should Buy?
-
Amateur Astronomers
Ideal for hobbyists needing a replacement mirror to build or enhance their own telescopes for stargazing.
-
DIY Enthusiasts
Perfect for those who enjoy creating custom telescopes and require quality components for their projects.
-
Educational Use
Great for teachers or students in astronomy classes wanting practical experience with telescope construction.
-
Beginners
Not suitable for total novices without prior knowledge of telescope assembly and mirror placement techniques.
-
Professional Use
May not meet the high precision standards required by professional astronomers for advanced observational tasks.
-
Casual Stargazers
Not ideal for those who prefer ready-to-use telescopes without any need for part assembly or upgrades.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a Newtonian Reflector telescope mirror used for?
Answer: A Newtonian Reflector telescope mirror is primarily used to gather and reflect light to form clear images of celestial objects. This type of mirror is crucial in telescopes as it allows amateur astronomers to observe planets, stars, and galaxies with greater clarity. The innovative design enhances light-gathering capabilities, making it suitable for deep-sky observations. Whether you’re looking to observe the rings of Saturn or distant nebulae, a high-quality secondary mirror significantly improves viewing experiences. -
Question:
What is the size of the secondary mirror?
Answer: The secondary mirror for this telescope setup measures 54MM in diameter. This dimension is important for ensuring proper light collection and optimal image quality. A properly sized secondary mirror not only enhances contrast but also helps in collimating the telescope for sharper and more detailed views. This size is standard for many amateur telescope builders, making it versatile for various DIY projects to build or upgrade existing telescopes. -
Question:
Can I use this mirror for different types of telescopes?
Answer: While the 54MM secondary mirror is specifically designed for Newtonian telescopes, it can be adapted for some other types of reflectors as well. It's essential to consider the optical design of your telescope. An accurate size and shape of the mirror help ensure it fits securely and effectively redirects light. If you're interested in customizing or enhancing an existing telescope, this mirror can be an excellent addition to your setup. -
Question:
How do I install the telescope secondary mirror?
Answer: Installing the 54MM telescope secondary mirror involves aligning it accurately within the optical path of your Newtonian telescope. You will typically need to secure it using mounting clips or an appropriate holder. It's crucial to ensure the mirror is correctly angled to reflect light towards the primary mirror for the best efficiency. This installation can drastically improve viewing experiences during nighttime observations as you enhance the overall optics of your device. -
Question:
What materials are used in the construction of the secondary mirror?
Answer: The secondary mirror is typically constructed from high-quality glass and coated with a reflective material to maximize light transmission. These materials are essential for ensuring that the light is efficiently reflected, allowing for bright and clear images of celestial objects. The integrity of the mirror's surface and coating plays a significant role in the overall performance of your telescope, making it imperative to choose high-grade components. -
Question:
Is the secondary mirror suitable for both beginners and experienced astronomers?
Answer: Yes, the 54MM secondary mirror is suitable for both beginners who are entering the world of astronomy and experienced astronomers looking to enhance their telescope. For beginners, it offers an accessible way to improve their DIY telescope projects. Experienced users will appreciate the precision and clarity it brings to their observations, making it a valuable investment for enhancing overall viewing quality in various astronomical endeavors. -
Question:
What are the benefits of using a secondary mirror in a Newtonian telescope?
Answer: A secondary mirror in a Newtonian telescope serves to redirect light collected by the primary mirror toward the eyepiece, enhancing image quality. This configuration helps to minimize optical aberrations and improve contrast, allowing users to see fainter celestial objects. By combining a high-quality secondary mirror like the 54MM option, stargazers can enjoy crisp, detailed images, and a richer viewing experience when exploring the night sky. -
Question:
What kind of maintenance is required for the secondary mirror?
Answer: Maintaining a secondary mirror involves regular cleaning and checking for alignment (collimation) to ensure optimal performance. Using a soft, lint-free cloth or specialized optical cleaning solutions is advisable to avoid scratching the mirror. Additionally, periodically reviewing the alignment helps to maintain the quality of your views, particularly after moving the telescope. Keeping the mirror in pristine condition ensures that every observation is bright and clear. -
Question:
Can I buy the Newtonian Reflector telescope mirror online?
Answer: Yes, the Newtonian Reflector telescope mirror is available for purchase online. You can find this product on e-commerce platforms where you might be looking for telescope accessories. For residents in Ireland, you can buy the DIY Astronomical Secondary Mirror 54MM from Ubuy, which offers a wide variety of astronomical supplies and components tailored for enthusiasts and professionals alike. -
Question:
What type of telescope is best paired with this secondary mirror?
Answer: The 54MM secondary mirror is best paired with a Newtonian reflector telescope. This type of mirror works specifically to enhance the optical performance of these telescopes by redirecting light effectively. When used with a compatible primary mirror, it ensures optimal light collection, allowing for clearer and more detailed observations of celestial objects. Whether you are a beginner building your first telescope or an expert upgrading your setup, this mirror can significantly improve your astrophotography or visual astronomy endeavors.
NYJLGD Reflectors Editorial Review
No editorial reviews found
Customer Reviews & Ratings
3 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
€ 28
Order now and get it around Sunday, August 02
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.