---
product_id: 453135424
title: "Astromania 1.25\" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm"
brand: "astromania"
price: "117007 Ft"
currency: HUF
in_stock: true
reviews_count: 1
url: https://www.desertcart.hu/products/453135424-astromania-1-25-narrowband-h-alpha-night-sky-filter-black
store_origin: HU
region: Hungary
---

# 90%+ transmittance >650nm 1.25" standard threading Blocks mercury & sodium vapor light Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm

**Brand:** astromania
**Price:** 117007 Ft
**Availability:** ✅ In Stock

## Summary

> 🌠 Capture the cosmos like never before — even from your city rooftop!

## Quick Answers

- **What is this?** Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm by astromania
- **How much does it cost?** 117007 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/453135424-astromania-1-25-narrowband-h-alpha-night-sky-filter-black)

## 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

- • **Cut Through Urban Glow:** Blocks harsh light pollution for crisp nebula views
- • **Infrared Emission Boost:** Enhances emission nebulae and deep sky objects in IR spectrum
- • **Multi-Coated Brilliance:** Hardened coatings deliver razor-sharp, high-contrast images
- • **Universal Compatibility:** Fits all 1.25" digital imagers with standard threading
- • **Precision Narrowband Pass:** Filters only wavelengths >650nm for pure H-Alpha imaging

## Overview

The Astromania 1.25" Narrowband H-Alpha Night Sky Filter is a premium optical accessory designed to dramatically reduce light pollution by blocking artificial mercury and sodium vapor lights. With over 90% transmittance above 650nm and advanced multi-coatings, it enhances contrast and sharpness for deep sky imaging of H-II regions and emission nebulae. Compatible with all standard 1.25" digital imagers, this filter empowers urban astronomers to capture stunning, high-contrast celestial photos despite city light interference.

## Description

The Night Sky Hydrogen-Alpha Filters are narrowband filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 90% or above. This convenient filter only allows wavelengths above 650nm through, which means it blocks a large part of the scattered light and also blocks the light from artificial mercury and sodium-vapour lamps. The filter is used as an extreme anti light-pollution filter, and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared. The 1.25" Night Sky Hydrogen-Alpha Filter, threads into the nose-piece of industry-standard 1.25" Digital Imagers. The Astromania H-Alpha cut-off filter enhances the contrast between object and sky, allowing you to take good quality images even under urban skies.

## Features

- A filter with incredible light pollution cut off characteristics
- The new H-Alpha passfilter enables high-contrast deep sky images of H-II regions
- The H-Alpha filter shares the same outstanding features as all the other Astromania imaging filters
- Unmatched optical quality and high efficiency hardened multicoatings result in the sharpest and highest contrast images possible
- The filter is used as an extreme anti light-pollution filter and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared

## Product Details

- **Brand:** Astromania
- **Material:** Optical Glass
- **Photo Filter Thread Size:** 3.2 Centimetres
- **Coating Description:** Multi Coating
- **Photo Filter Effect Type:** Infrared

## Images

![Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm - Image 1](https://m.media-amazon.com/images/I/716cZ0ahUOL.jpg)
![Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm - Image 2](https://m.media-amazon.com/images/I/71jRCKCP5EL.jpg)
![Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm - Image 3](https://m.media-amazon.com/images/I/81YdUAK+1HL.jpg)
![Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm - Image 4](https://m.media-amazon.com/images/I/81I4s7LmJtL.jpg)
![Astromania 1.25" Narrowband H-Alpha Night Sky Filter - Black, Multi Coated Optical Glass, H-Alpha Effect, 31.75mm - Image 5](https://m.media-amazon.com/images/I/81--mk7md-L.jpg)

## Customer Reviews

### ⭐⭐⭐ 







  
  
    Check thickness
  

*by R***. on Reviewed in the United States on 18 August 2021*

The filter frame  is too thick to fit into a Blue Fireball filter holder, limiting the ease of use in my system.

## Frequently Bought Together

- Astromania 1.25" H-Alpha Night Sky Filter
- Astromania 1.25" O-III Filter - Enhances Contrast During Visual Observation of Gaseous and Planetary Nebulae in All Sky Conditions, The Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects
- Astromania 1.25" UHC (Ultra High Contrast) Filter - Superb Views of The Orion, Lagoon, Swan and Other Extended Nebulae

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**Shop now:** [https://www.desertcart.hu/products/453135424-astromania-1-25-narrowband-h-alpha-night-sky-filter-black](https://www.desertcart.hu/products/453135424-astromania-1-25-narrowband-h-alpha-night-sky-filter-black)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-17*