---
product_id: 280363425
title: "Optolong L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2\")"
brand: "optolong"
price: "15725865₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/280363425-optolong-l-extreme-7nm-dual-narrowband-filter-h-alpha-o
store_origin: VN
region: Vietnam
---

# Dual-band filter 7nm precision One-shot color Optolong L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2")

**Brand:** optolong
**Price:** 15725865₫
**Availability:** ✅ In Stock

## Summary

> 🌠 Unleash the cosmos with every click!

## Quick Answers

- **What is this?** Optolong L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2") by optolong
- **How much does it cost?** 15725865₫ 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/280363425-optolong-l-extreme-7nm-dual-narrowband-filter-h-alpha-o)

## Best For

- optolong enthusiasts

## Why This Product

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

## Key Features

- • **Moonlit Mastery:** Conquer bright conditions and reveal celestial wonders.
- • **Nebula Navigator:** Ideal for photographing emission nebulae with vibrant colors.
- • **Effortless Imaging:** Perfect for One-Shot Color cameras—no complex setups needed.
- • **Precision Engineering:** 7nm narrowband technology for unparalleled clarity.
- • **Illuminate Your Universe:** Capture stunning images even in light-polluted skies!

## Overview

The Optolong L-Extreme 7nm Dual Narrowband Filter is designed for astrophotography enthusiasts, allowing for exceptional imaging of H-Alpha and O-III wavelengths. This 2-inch filter excels in bright light conditions, making it perfect for capturing stunning color images of emission nebulae without the hassle of multiple filters.

## Description

L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2")

## Features

- Dual H-Alpha/O-III 7nm narrowband filter
- Allows for imaging in bright man-made light pollution and moonlit conditions
- Most useful for One-Shot Color cameras
- Take color images without needing to combine images with multiple filters
- Use for taking images of emission nebulae

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BWTFZ22 |
| Best Sellers Rank | #40 in Telescope Filters |
| Brand | Optolong |
| Coating Description | Multi Coating |
| Compatible Devices | DSLRs, CCD cameras, CMOS cameras |
| Customer Reviews | 5.0 out of 5 stars 50 Reviews |
| Enclosure Material | Glass |
| Item Dimensions L x W | 2"L x 2"W |
| Manufacturer | Optolong |
| Material | Glass |
| Maximum Shutter Speed | 30 Seconds |
| Media Type | ProductImage |
| Model Name | 139 |
| Photo Filter Effect Type | Enhancing |
| Photo Filter Thread Size | 48.04 Millimeters |
| Screen Size | 2 Inches |
| Special Effect | Enhancing |
| Thread Size | 48.04 Millimeters |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** OPTOLONG
- **Material:** Glass
- **Photo filter thread size:** 48.04 Millimeters
- **Coating description:** Multi Coating
- **Photo filter effect type:** Enhancing

## Images

![Optolong L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2") - Image 1](https://m.media-amazon.com/images/I/61OUObRMrBL.jpg)

## Frequently Bought Together

- Optolong L-Extreme 7nm Dual Narrowband Filter (H-Alpha and O-III) (2")
- Optolong 2" L-Pro Light Pollution Filter
- SVBONY SV226 Telescope Filter Drawer, Photographic Filters Drawer with M42-M48 Adapter, Double Magnetic Filter Holder for 1.25 and 2 Inches Filter Mounted, for Deep Sky Photography

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**Shop now:** [https://www.desertcart.vn/products/280363425-optolong-l-extreme-7nm-dual-narrowband-filter-h-alpha-o](https://www.desertcart.vn/products/280363425-optolong-l-extreme-7nm-dual-narrowband-filter-h-alpha-o)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-09*