---
product_id: 409556286
title: "Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope"
brand: "n /a"
price: "3534904₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/409556286-astronomical-telescope-accessories-d114f900-short-axis-secondary-mirror-25mm-newton
store_origin: VN
region: Vietnam
---

# 900mm focal length for precision focus 114mm aperture for crisp views Aluminum + oxide coating for durability Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope

**Brand:** n /a
**Price:** 3534904₫
**Availability:** ✅ In Stock

## Summary

> 🌌 Elevate your stargazing game—see the universe like never before!

## Quick Answers

- **What is this?** Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope by n /a
- **How much does it cost?** 3534904₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/409556286-astronomical-telescope-accessories-d114f900-short-axis-secondary-mirror-25mm-newton)

## Best For

- n /a enthusiasts

## Why This Product

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

## Key Features

- • **Capture the cosmos:** Optimized for realistic planetary photography—turn your telescope into a space camera
- • **Compact & lightweight design:** 388g and sleek dimensions make it perfect for DIY telescope upgrades
- • **Crystal-clear cosmic clarity:** 114mm K9 glass primary mirror captures stunning celestial details
- • **Pinpoint planetary precision:** 900mm focal length ensures razor-sharp focus on distant planets
- • **Durability that outlasts the stars:** Dual-layer aluminum and oxide coating protects optics from wear

## Overview

This DIY telescope accessory features a 114mm diameter K9 glass primary mirror with a 900mm focal length, paired with a 25mm short-axis secondary mirror. Its aluminum and aluminum oxide coatings enhance durability and optical performance, enabling realistic planetary imaging. Lightweight and compact, it’s ideal for upgrading Newtonian reflector telescopes.

## Description

1. The company is committed to optical spherical lenses, optical prisms, reflectors, achromatic lenses, cemented lenses, cylindrical lenses, windows and other optical components can be designed according to requirements, providing you with the best products and services is our aim2. The main mirror is made of K9 glass with a diameter of 114mm, and the focal length is about 900mm3. The minor axis (short side diameter) of the secondary mirror is 25mm, spherical mirror, aluminized and protective film4. Suitable for adult telescope, children's telescope, astronomical beginner telescope, children's beginner telescope, children's telescope toy, astronomical telescope, telescope personnel, adult travel telescope5. Based on the feedback from my friends, you can shoot a few planets.6. Independent product packaging brings you a different shopping experience7. This is an attached area for astronomical telescope lovers, you can buy it as you need8. Used as an accessory for astronomical telescopes

## Features

- 1. Material: K9 glass
- 2. Model: Main mirror D114F900 with auxiliary mirror 25mm
- 3. Size: The main mirror diameter is 114mm, the focal length is 900mm, and the minor axis of the secondary mirror is 25mm.
- 4. The surface is coated with aluminum film and aluminum oxide protective film
- 5. Realistic shooting effect: can shoot planets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | N /A |
| Manufacturer | JINGLIANG |
| Item Height | 12.7 Centimeters |
| Item Width | 1.27 Centimeters |
| Product Dimensions | 12.7 x 1.27 x 12.7 cm; 388.39 Grams |
| Item model number | D114F900/25mm |
| Power Source | ac |
| Are Batteries Included | No |
| Included Components | Case |
| Manufacturer | JINGLIANG |
| Item Weight | 388 g |

## Product Details

- **Brand:** N /A
- **Model Name:** RM
- **Eye Piece Lens Description:** Prism
- **Objective Lens Diameter:** 25 Millimeters
- **Telescope Mount Description:** Altazimuth Mount

## Images

![Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope - Image 1](https://m.media-amazon.com/images/I/41hUROocpUL.jpg)
![Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope - Image 2](https://m.media-amazon.com/images/I/311og7nn+pL.jpg)
![Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope - Image 3](https://m.media-amazon.com/images/I/41MWBp+R+HL.jpg)
![Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope - Image 4](https://m.media-amazon.com/images/I/41y3J-0faQL.jpg)
![Astronomical Telescope Accessories: D114F900 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens DIY Telescope - Image 5](https://m.media-amazon.com/images/I/41MWBp+R+HL.jpg)

## Questions & Answers

**Q: Is this a parabolic mirror ?**
A: No. Simple spherical mirror.

**Q: Does it come in 10” sets at 40$?**
A: No. 10" mirrors are many hundreds. These are 114mm so about 4.5" or so

**Q: What is the thickness of the primary and secondary?**
A: the primary mirror thickness is 14.2mm, secondary mirror thickness is 4.8mm

**Q: Will it fit a 10” reflector telescope?  That’s all I want to know**
A: It will fit and leave a lot of empty space; this is about the diameter of a DVD

## Frequently Bought Together

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-13*