---
product_id: 38932454
title: "Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube"
brand: "astromania"
price: "$40.76"
currency: USD
in_stock: true
reviews_count: 13
category: "Astromania"
url: https://www.desertcart.us/products/38932454-astromania-bahtinov-mask-focusing-mask-for-telescopes-fm60mm-for-tube
store_origin: US
region: United States of America
---

# Precision laser-cut plexiglass Adjustable fit 65-100mm OD Non-scratching silicon sleeves Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube

**Brand:** astromania
**Price:** $40.76
**Availability:** ✅ In Stock

## Summary

> 🔭 Focus like a pro, capture the cosmos flawlessly!

## Quick Answers

- **What is this?** Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube by astromania
- **How much does it cost?** $40.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/38932454-astromania-bahtinov-mask-focusing-mask-for-telescopes-fm60mm-for-tube)

## Best For

- astromania enthusiasts

## Why This Product

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

## Key Features

- • **Gentle Yet Secure Grip:** Three metal posts with silicon sleeves protect your telescope’s finish while keeping the mask perfectly centered.
- • **Quick Install & Remove:** Brass screws with soft plastic caps ensure easy mounting inside or outside your drawtube without damage.
- • **Durable & Cold-Resistant:** 2mm thick laser-cut plexiglass stays stiff and reliable even in freezing conditions.
- • **Pinpoint Focus Every Time:** Mathematically engineered Bahtinov design eliminates guesswork for razor-sharp astrophotography shots.
- • **Universal Fit, Zero Hassle:** Adjustable 65-100mm diameter range fits most telescopes—reflectors and refractors alike.

## Overview

The Astromania Bahtinov Mask FM60mm is a precision laser-cut focusing mask designed for telescopes with 65-100mm outer diameters. Made from durable 2mm plexiglass and featuring adjustable brass screws with silicon sleeves, it offers a secure, non-damaging fit. This mask enables fast, mathematically precise focusing for both reflectors and refractors, enhancing astrophotography accuracy even under challenging seeing conditions.

## Description

desertcart.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube : Electronics

Review: Installs easily and allows for precise focusing - This Bahtinov mask is lightweight yet sturdy. It is made of solid black plastic, and it installs very easily. The adjustable screws have rubber caps that help fit the mask securely to the end of the telescope, and it is easy to remove. With this mask, I can quickly and easily find accurate and precise focus for astrophotography.
Review: good quality - Good quality, works great. Packaged well

## 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; they are made from precision laser cut enforced plexiglass that 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 valued telescope surface; mask remains centered since 3-post mounting; while fitting a wider range of telescopes
- Made from 2mm thick laser cut plexiglass and securing screws are capped with soft plastic so that do not damage telescope; They have adjustment latitude of about 65-100mm that adjustable to fit optical tubes unlike masks which only fit one telescope
- Please be assured these focusing masks will work excellently for both reflectors and refractors with whatever focal length; all you need to do is to measure telescope tube size and choose right size of mask contact us if not sure where to measure

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MEG5D8W |
| Best Sellers Rank | #4 in Telescope Eyepieces |
| Customer Reviews | 4.4 4.4 out of 5 stars (644) |
| Date First Available | October 18, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.1 ounces |
| Item model number | SKU_AM_BFM60 |
| Manufacturer | Astromania |
| Product Dimensions | 5.12 x 5.12 x 0.12 inches |

## Product Details

- **Brand:** Astromania
- **Compatible Devices:** Camera, DSLR, Webcam
- **Exit Pupil:** 3 Millimeters
- **Eye Piece Lens Description:** NO
- **Focus Type:** Center Focus
- **Item Weight:** 1.1 Ounces
- **Lens Coating Description:** UV-Protective, Scratch-Resistant
- **Objective Lens Diameter:** 100 Millimeters
- **Optical Tube Length:** 60 Millimeters
- **Telescope Mount Description:** Equatorial Mount

## Images

![Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube - Image 1](https://m.media-amazon.com/images/I/618gIyeZNML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Installs easily and allows for precise focusing
*by C***K on January 9, 2026*

This Bahtinov mask is lightweight yet sturdy. It is made of solid black plastic, and it installs very easily. The adjustable screws have rubber caps that help fit the mask securely to the end of the telescope, and it is easy to remove. With this mask, I can quickly and easily find accurate and precise focus for astrophotography.

### ⭐⭐⭐⭐⭐ good quality
*by M***T on November 20, 2025*

Good quality, works great. Packaged well

### ⭐⭐⭐⭐ Easily Adjustable Bahtinov
*by J***S on May 29, 2025*

I like the adjustable feature of this mask. I was uncertain of the size for my 80mm refractor, so I decided to buy one that bracketed the aperature on my 550. It functions quite well and is very light weight. I would say good value for the money.

## Frequently Bought Together

- Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*