---
product_id: 164706704
title: "MEOPTEX Bahtinov Mask Focusing Mask for Telescopes (for Outer Diameter from 125mm-180mm)"
brand: "meoptex"
price: "¥6764"
currency: JPY
in_stock: true
reviews_count: 4
category: "Meoptex"
url: https://www.desertcart.jp/products/164706704-meoptex-bahtinov-mask-focusing-mask-for-telescopes-for-outer-diameter
store_origin: JP
region: Japan
---

# Precision laser-cut plexiglass Adjustable fit for 125-180mm tubes Non-scratch silicon sleeve mounts MEOPTEX Bahtinov Mask Focusing Mask for Telescopes (for Outer Diameter from 125mm-180mm)

**Brand:** meoptex
**Price:** ¥6764
**Availability:** ✅ In Stock

## Summary

> 🔭 Focus like a star—never miss a celestial moment!

## Quick Answers

- **What is this?** MEOPTEX Bahtinov Mask Focusing Mask for Telescopes (for Outer Diameter from 125mm-180mm) by meoptex
- **How much does it cost?** ¥6764 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/164706704-meoptex-bahtinov-mask-focusing-mask-for-telescopes-for-outer-diameter)

## Best For

- meoptex enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Setup & Use:** Manual focus aid that’s quick to install and compatible with all focal lengths—focus like a pro in minutes.
- • **Universal Compatibility:** Fits reflectors, refractors, Dobsonians, Mak-Cas, and SCTs with adjustable 125-180mm diameter range.
- • **Secure & Gentle Mounting:** Three metal posts with silicon sleeves protect your telescope’s finish while ensuring perfect centering.
- • **Pinpoint Focus Every Time:** Mathematically engineered Bahtinov design eliminates guesswork for razor-sharp telescope focus.
- • **Durable Cold-Resistant Build:** 2mm thick enforced plexiglass stays stiff and crack-free even in freezing conditions.

## Overview

The MEOPTEX Bahtinov Mask is a precision laser-cut focusing aid designed for telescopes with 125-180mm outer diameters. Crafted from durable, cold-resistant plexiglass and featuring a secure three-post silicon-sleeved mount, it ensures perfect centering and protects your telescope’s surface. Compatible with all major telescope types and focal lengths, this adjustable mask delivers fast, mathematically precise focusing to elevate your stargazing experience.

## Description

"Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily. Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics. The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes. They are made from 2mm thick laser cut plexiglass and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope., depending on model, in aperture making them very versatile. Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure). "

Review: Great quality for the price. - It does what a Bahtinov mask should at a great price point.
Review: Item not as pictured, good thing? - So I haven’t used it yet, take however many stars with a grain of salt. It’s a bit thin, but as described, the section that looks like a slotted triangle is solid on the first one to arrive. Will update, usually they are slotted and that may be an issue.

## Features

- Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily.
- Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics.
- The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes.
- They are made from 2mm thick laser cut plexiglass and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 290-340mm, depending on model, in aperture making them very versatile.
- Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07KR29DN5 |
| Best Sellers Rank | #461 in Telescope Accessories |
| Brand | MEOPTEX |
| Customer Reviews | 4.6 out of 5 stars 31 Reviews |
| Finderscope | Reflex |
| Focus Type | Manual Focus |
| Item Weight | 2.25 Ounces |
| Manufacturer | MEOPTEX |
| Mount | Altazimuth Mount |
| Power Source | Manual Operation |
| Telescope Mount Description | Altazimuth Mount |

## Images

![MEOPTEX Bahtinov Mask Focusing Mask for Telescopes (for Outer Diameter from 125mm-180mm) - Image 1](https://m.media-amazon.com/images/I/51MQ6BCh5AL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality for the price.
*by J***R on December 23, 2025*

It does what a Bahtinov mask should at a great price point.

### ⭐⭐⭐ Item not as pictured, good thing?
*by J***N on February 26, 2025*

So I haven’t used it yet, take however many stars with a grain of salt. It’s a bit thin, but as described, the section that looks like a slotted triangle is solid on the first one to arrive. Will update, usually they are slotted and that may be an issue.

### ⭐⭐⭐⭐ It works
*by R***O on January 30, 2021*

It is flimsy but you shouldn't be bending it. The size is what it says it is. Don't make the mistake of thinking it is for your telescopes diameter where it takes in light. Make sure you get a size a little bit bigger and smaller then your telescope

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**Shop now:** [https://www.desertcart.jp/products/164706704-meoptex-bahtinov-mask-focusing-mask-for-telescopes-for-outer-diameter](https://www.desertcart.jp/products/164706704-meoptex-bahtinov-mask-focusing-mask-for-telescopes-for-outer-diameter)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-04*