---
product_id: 565857325
title: "Diameter 114 mm Focal Length 900mm Newtonian Reflector Mirror for Astronomical"
brand: "skyoptikst"
price: "¥21675"
currency: JPY
in_stock: true
category: "Skyoptikst"
url: https://www.desertcart.jp/products/565857325-diameter-114-mm-focal-length-900mm-newtonian-reflector-mirror-astronomical
store_origin: JP
region: Japan
---

# 92% reflectivity with enhanced coating 900mm focal length for deep sky clarity 114mm aperture for crisp views Diameter 114 mm Focal Length 900mm Newtonian Reflector Mirror for Astronomical

**Brand:** skyoptikst
**Price:** ¥21675
**Availability:** ✅ In Stock

## Summary

> 🔭 Unlock the cosmos with precision and style — don’t just watch the stars, own them!

## Quick Answers

- **What is this?** Diameter 114 mm Focal Length 900mm Newtonian Reflector Mirror for Astronomical by skyoptikst
- **How much does it cost?** ¥21675 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/565857325-diameter-114-mm-focal-length-900mm-newtonian-reflector-mirror-astronomical)

## Best For

- skyoptikst enthusiasts

## Why This Product

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

## Key Features

- • **Deep Space Ready:** 900mm focal length ensures impressive magnification and detailed planetary views.
- • **Compact & Lightweight:** Only 0.4 kg and 22cm depth, ideal for portable stargazing sessions.
- • **DIY Enthusiast’s Dream:** Newtonian reflector design perfect for custom telescope builds and upgrades.
- • **High Reflectivity Coating:** Enhanced aluminum coating boosts light reflection up to 92%, revealing faint stars and nebulae.
- • **Precision Optics for Stellar Detail:** 114mm diameter primary mirror delivers sharp, bright celestial images.

## Overview

The Skyoptikst D114F900JP is a 114mm Newtonian reflector mirror featuring a 900mm focal length and 92% reflectivity enhanced aluminum coating. Designed for DIY telescope enthusiasts and professional stargazers alike, it offers sharp, bright views of celestial objects with a compact, lightweight build. Compatible with standard eyepieces and filters, this mirror elevates your astronomical observations with precision optics and durable protective coatings.

## Description

D114F900JP astronomical eyeglasses spherical lens Specification: Primary mirror: spherical Caliber: 114mm Focal length: 900mm The thickness is about 14m Reflected at: 92% Major axis of secondary mirror: 35mm Minor mirror minor axis: 25mm Coating, aluminizing and protective film Package description: One D114F900JP lens 1 packing box

## Features

- Caliber: 114mm, Focal length: 900mm
- Surface accuracy： 1/10 λ
- Enhanced aluminum and protective coating
- Reflectance at: 92% / 400-950nm
- Major axis of secondary mirror: 35mm , minor axis: 25mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B096F28YR6 |
| Best Sellers Rank | #366,868 in Electronics ( See Top 100 in Electronics ) #49 in Telescope Reflectors |
| Box Contents | a Primary mirror ,a Secondary mirror |
| Brand Name | Skyoptikst |
| Coating | Enhanced aluminum and protective coating |
| Compatible Devices | Eyepieces, Filters |
| Country of Origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (54) |
| Exit Pupil Diameter | 0.13 Millimeters |
| Eye Piece Lens Description | Kellner or Plossl |
| Field Of View | 1.75 Degrees |
| Finderscope | Reflex |
| Focal Length Description | 900 millimeters |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 22D x 15W x 5H Centimeters |
| Item Weight | 0.4 Kilograms |
| Manufacturer | Skyoptikst |
| Manufacturer Part Number | D114F900JP |
| Model Name | D114F900JP-FBA |
| Model Number | D114F900JP |
| Mount | Altazimuth Mount |
| Number of Items | 20 |
| Number of Packs | 1 |
| Objective Lens Diameter | 114 Millimeters |
| Power Source | Battery Powered |
| Product Features | Newtonian Reflector Design with High Reflectance Coating |
| UPC | 738086032775 |
| Unit Count | 1 Count |
| Zoom Ratio | 171 |

## Product Details

- **Brand:** Skyoptikst
- **Eye Piece Lens Description:** Kellner or Plossl
- **Model Name:** D114F900JP-FBA
- **Objective Lens Diameter:** 114 Millimeters
- **Telescope Mount Description:** Altazimuth Mount

## Images

![Diameter 114 mm Focal Length 900mm Newtonian Reflector Mirror for Astronomical - Image 1](https://m.media-amazon.com/images/I/51HM8wL9NzS.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- SKYOPTIKST D114F900 Newtonian Reflector telescoe Mirror，DIY 114/900 Astronomical Telescopes
- SVBONY 25mm Telescope Eyepiece, Large Aperture Eyepiece, 40 Degree Field of View Plossl Eyepiece with Filter Threaded for Observing Moon Planetary Binary
- SVBONY Telescope Eyepiece Fully Mutil Coated 1.25 inches Telescope Accessories Set 66 Degree Ultra Wide Angle HD 6mm for Astronomy Telescope

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**Shop now:** [https://www.desertcart.jp/products/565857325-diameter-114-mm-focal-length-900mm-newtonian-reflector-mirror-astronomical](https://www.desertcart.jp/products/565857325-diameter-114-mm-focal-length-900mm-newtonian-reflector-mirror-astronomical)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-08*