---
product_id: 464296772
title: "Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit"
brand: "nyjlgd"
price: "S/.216"
currency: PEN
in_stock: true
reviews_count: 2
category: "Nyjlgd"
url: https://www.desertcart.pe/products/464296772-reflector-main-mirror-114mm-with-secondary-mirror-25mm-newton-reflector
store_origin: PE
region: Peru
---

# 900mm focal length precision 114mm primary mirror diameter 25mm secondary mirror size Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit

**Brand:** nyjlgd
**Price:** S/.216
**Availability:** ✅ In Stock

## Summary

> 🔭 Unlock the Universe: Build Your Own Stargazing Masterpiece!

## Quick Answers

- **What is this?** Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit by nyjlgd
- **How much does it cost?** S/.216 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/464296772-reflector-main-mirror-114mm-with-secondary-mirror-25mm-newton-reflector)

## Best For

- nyjlgd enthusiasts

## Why This Product

- Trusted nyjlgd brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** 4.5" diameter and 0.8" thickness for easy integration and portability
- • **Precision Focal Length:** 900mm focal length engineered for deep-sky clarity and detail
- • **DIY Telescope Essential:** Perfect core component for custom Newtonian telescope builds
- • **Crystal-Clear Cosmic Views:** 114mm aluminized spherical mirror delivers sharp planetary imaging
- • **Durable Reflective Coating:** Aluminized surface with protective film guards against scratches

## Overview

This Newtonian reflector mirror kit features a 114mm primary spherical mirror with a 900mm focal length and a 25mm secondary mirror, both aluminized and protected for durability. Designed for DIY astronomical telescopes, it offers precise manual focusing and compact dimensions, making it an ideal upgrade for amateur astronomers seeking crisp planetary and deep-sky observations.

## Description

desertcart.com : Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit : Electronics

Review: telescope miror - great item. worked as it should
Review: Questionable quality - The reflective surface is not very durable and started to flake off. I also could not achieve focus at 900mm or anywhere near it. I dont think these are parabolic and if they are, the focal length is entirely incorrect.

## Features

- Contains a primary lens with an objective lens diameter of 114mm and a focal length of 900mm, and a secondary mirror with a short axis (short side diameter) of 25mm length. This is the core component of a set of mirrors.
- Uses: used in astronomical telescope accessories
- Features: The main mirror is a spherical mirror with aluminized surface and a protective film to prevent scratches on the main mirror under light touch. The workmanship is excellent.
- Realistic shooting effect: can shoot planets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B5DCJQFH |
| Best Sellers Rank | #2,738 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #54 in Telescope Reflectors |
| Brand | NYJLGD |
| Coating | Aluminized |
| Compatible Devices | DIY Telescopes |
| Customer Reviews | 4.1 out of 5 stars 18 Reviews |
| Exit Pupil Diameter | 0.13 Millimeters |
| Eye Piece Lens Description | Achromatic |
| Finderscope | Reflex |
| Focal Length Description | 35.43 inches |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 4.5"D x 4.5"W x 0.8"H |
| Manufacturer | NF-D114F900 |
| Mount | Equatorial Mount |
| Objective Lens Diameter | 114 Millimeters |
| Optical Tube Length | 11 Millimeters |
| Optical-Tube Length | 11 Millimeters |
| Power Source | Battery Powered |
| Product Dimensions | 4.5"D x 4.5"W x 0.8"H |
| Telescope Mount Description | Equatorial Mount |
| UPC | 726189213160 |
| Zoom Ratio | 36 |

## Product Details

- **Brand:** NYJLGD
- **Optical Tube Length:** 11 Millimeters
- **Eye Piece Lens Description:** Achromatic
- **Objective Lens Diameter:** 114 Millimeters
- **Telescope Mount Description:** Equatorial Mount
- **Product Dimensions:** 4.5"D x 4.5"W x 0.8"H
- **Focus Type:** Manual Focus
- **Power Source:** Battery Powered
- **Finderscope:** Reflex
- **Compatible Devices:** DIY Telescopes

## Images

![Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit - Image 1](https://m.media-amazon.com/images/I/21+LVTokReL.jpg)
![Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit - Image 2](https://m.media-amazon.com/images/I/21boCgY6KjL.jpg)
![Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit - Image 3](https://m.media-amazon.com/images/I/21evBQHbiuL.jpg)
![Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit - Image 4](https://m.media-amazon.com/images/I/21g7jTggBRL.jpg)
![Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit - Image 5](https://m.media-amazon.com/images/I/319UZ1ypIsL.jpg)

## Questions & Answers

**Q: The secondary mirror in this set is listed as a spherical mirror. What is the focal length of the secondary?**
A: The secondary is flat, not spherical. These are good mirrors, especially at the price.

**Q: What is the mirror thickness?**
A: I don't have it in front of me to measure, but the primary mirror is roughly 1/2" thick at the edge or maybe slightly thicker and the reflector mirror is just over 1/8 "

## Customer Reviews

### ⭐⭐⭐⭐⭐ telescope miror
*by C***Y on May 9, 2024*

great item. worked as it should

### ⭐ Questionable quality
*by A***R on December 28, 2023*

The reflective surface is not very durable and started to flake off. I also could not achieve focus at 900mm or anywhere near it. I dont think these are parabolic and if they are, the focal length is entirely incorrect.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.pe/products/464296772-reflector-main-mirror-114mm-with-secondary-mirror-25mm-newton-reflector](https://www.desertcart.pe/products/464296772-reflector-main-mirror-114mm-with-secondary-mirror-25mm-newton-reflector)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-02-03*