---
product_id: 221975860
title: "Astromania 1.25\" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae"
brand: "astromania"
price: "$97.78"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/221975860-astromania-1-25-o-iii-filter-made-from-premium-glass
store_origin: US
region: United States of America
---

# 95% light transmittance Dichroic interference glass 1.25" diameter Astromania 1.25" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae

**Brand:** astromania
**Price:** $97.78
**Availability:** ✅ In Stock

## Summary

> 🌠 Unlock the Universe's Secrets!

## Quick Answers

- **What is this?** Astromania 1.25" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae by astromania
- **How much does it cost?** $97.78 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/221975860-astromania-1-25-o-iii-filter-made-from-premium-glass)

## 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

- • **Precision Engineering:** Crafted from premium glass with advanced coatings.
- • **Quality You Can Trust:** Individually inspected for guaranteed performance.
- • **Elevate Your Stargazing:** Experience unparalleled contrast in your observations.
- • **Universal Compatibility:** Fits all 1.25 inch eyepieces for versatile use.
- • **Light Pollution? No Problem!:** Optimized for high-contrast imaging even in urban skies.

## Overview

The Astromania 1.25" O-III Filter is designed to enhance the visual observation of gaseous and planetary nebulae by allowing only the Double Ionized Oxygen lines to pass through at an impressive 95% transmittance. Its premium glass construction with dichroic interference and antireflection coatings ensures optimal performance, even in light-polluted areas. Compatible with all 1.25 inch eyepieces, this filter is a must-have for both amateur and professional astronomers seeking to elevate their stargazing experience.

## Description

Astromania 1.25" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae

## Features

- 1.25 inch O-III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; allows high-contrast imaging even in areas with strong light pollution
- Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming; allowing just for the Double Ionized Oxygen lines between 496nm to 501nm to pass through at 95 percent
- Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized; increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting
- Not only useful at light-polluted sites; the contrast is also increased at dark sky sites; can be used with all 1.25 inch eyepieces; filter made from high-grade glass with dichroic interference and antireflection coatings
- Each Astromania 1.25 inch O-III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O-III emission lines

## Product Details

- **Brand:** Astromania
- **Material:** Glass
- **Photo Filter Thread Size:** 1.25 Inches
- **Coating Description:** Multi Coating
- **Photo Filter Effect Type:** Nebula Enhancing, Green Tint
- **Water Resistance Level:** Not Water Resistant
- **Product Dimensions:** 1.25"L x 1.25"W

## Images

![Astromania 1.25" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae - Image 1](https://m.media-amazon.com/images/I/61hR4XyniGL.jpg)

## Available Options

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

## Frequently Bought Together

- Astromania 1.25" O-III Filter - Made from Premium Glass with Dichroic Interference and Antireflection Coatings, Enhancing Contrast During Visual Observation of Gaseous and Planetary Nebulae
- SVBONY Telescope Filter 1.25 inches UHC Filter Astrophotography to Improve The Image Contrast Reduces Light Pollution (1.25 inch)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-19*