---
product_id: 12334989
title: "Baader Planetarium Red 610nm Long-Pass Filter, 1.25\" Eyepiece"
brand: "baader planetarium"
price: "€ 136.38"
currency: EUR
in_stock: true
reviews_count: 1
url: https://www.desertcart.gr/products/12334989-baader-planetarium-red-610nm-long-pass-filter-1-25-eyepiece
store_origin: GR
region: Greece
---

# 30 sec arc parallel polishing 98% peak transmission 7-layer hard multi-coatings Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece

**Brand:** baader planetarium
**Price:** € 136.38
**Availability:** ✅ In Stock

## Summary

> 🔴 See Red, See More: Elevate Your Planetary Observations to Pro-Level Clarity!

## Quick Answers

- **What is this?** Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece by baader planetarium
- **How much does it cost?** € 136.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/12334989-baader-planetarium-red-610nm-long-pass-filter-1-25-eyepiece)

## Best For

- baader planetarium enthusiasts

## Why This Product

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

## Key Features

- • **Ghost-Free Imaging:** Striae-free, precision-polished substrates eliminate ghost images—even in stacked setups.
- • **Compact & Compatible:** Standard 1.25" thread size fits seamlessly with your existing eyepieces for effortless upgrades.
- • **Durable Multi-Coating Armor:** 7-layer hard coatings reduce reflections to a mere 0.25%, maximizing clarity and durability.
- • **Crystal-Clear Planetary Views:** Experience unmatched contrast with 98% light transmission for razor-sharp planetary details.
- • **Optimized for Smaller Telescopes:** Unlock professional-grade detail without needing bulky equipment—perfect for the urban stargazer.

## Overview

The Baader Planetarium Red 610nm Long-Pass Filter features ultra-precise 30-second arc parallel polishing and advanced 7-layer multi-coatings, delivering 98% peak transmission and minimal reflections. Designed for 1.25" eyepieces, it enhances planetary contrast and detail, eliminating ghost images even in stacked configurations—ideal for serious amateur astronomers seeking crisp, high-contrast views.

## Description

The Baader Planetarium FCFR-1 Red Long-Pass Filter has a bandpass at 610 nm and is designed for 1.25" eyepieces. It has 98% transmission efficiency and enhances planetary details and works well with solar filters. It can be placed anywhere in the optical path without introducing astigmatism or other defects. A fine optical polish and 2 mm thick glass allows these filters to be inserted anywhere into the optical path without introducing astigmatism or other defects.For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass. The filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length.The front "crown" incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light.Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planeta

## Features

- Freedom from ghost images, even when stacked
- Striae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors
- Finest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections
- Extremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes
- Efficiency of the long-pass filter (Red) peaks at 98%

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Special Effect | Ultraviolet |
| Water Resistance Level | Not Water Resistant |
| Coating Description | Multi Coating |
| Thread Size | 1.25 Inches |
| Item Dimensions L x W | 1.25"L x 1.25"W |
| Enclosure Material | Glass |

## Product Details

- **Brand:** Baader Planetarium
- **Material:** Glass
- **Photo Filter Thread Size:** 1.25 Inches
- **Coating Description:** Multi Coating
- **Photo Filter Effect Type:** Ultraviolet
- **Water Resistance Level:** Not Water Resistant
- **Product Dimensions:** 1.25"L x 1.25"W

## Images

![Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece - Image 1](https://m.media-amazon.com/images/I/61ErlgBLzRL.jpg)
![Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece - Image 2](https://m.media-amazon.com/images/I/61UuRt773DL.jpg)
![Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece - Image 3](https://m.media-amazon.com/images/I/71Zi8sIsuGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Inexpensive, quality deep red filter
*by N***R on October 27, 2014*

Works as expected. Cuts out all light below around 610nm, only passing red and IR through to the sensor. Great for isolating bright features on Uranus and Neptune.

## Frequently Bought Together

- Baader Planetarium Red 610nm Long-Pass Filter, 1.25" Eyepiece
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- Astromania Anti Vibration Pads for Telescope Mount & Camera Tripod, Vibration Suppression Pads Telescope Accessory for NexStar 8SE, Telescope Stabilizer for Astronomy As Companion for Photo Adapter

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**Shop now:** [https://www.desertcart.gr/products/12334989-baader-planetarium-red-610nm-long-pass-filter-1-25-eyepiece](https://www.desertcart.gr/products/12334989-baader-planetarium-red-610nm-long-pass-filter-1-25-eyepiece)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-06*