Filters

Opotlong L-Ultimate Introduction

It’s about a 3nm dual band designed to drastically reduce the effect of light pollution, the 3nm isolates the nebulae’s emissions into H-Alpha (red) and OIII (green-b

1. Introduction

L1 Dual -Combo Set includes：1* L-Quad Enhance Filter & 1* L-Para

L-Quad Enhance Filter：Quad bandpass broadband filter ,  This filter provides better color balance while improving re

1.  Optolong LRGB Introduction

Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectru

1.  Optolong LRGB Introduction

Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectru

1.  Moon & Skyglow Introduction

Optolong Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artifici

1.  Neutral Density Filters Introduction

Neutral Density (ND) filters are designed to reduce transmission evenly acorss a portion of a specific spectrum. ND filters are typically defined by their Opt

1.  Optolong Night Sky H-Alpha Introduction

Night Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95% or above transmission at wavelengths longer th

Nikon Z Full Frame ILDC Clip-in Filters

1.  L-Pro Filter Introduction
In suburban areas with weak light pollution, the color balance is good. The design of multi-band pass ensures excellent colo

Optolong Improved OIII6.5nm Narrowband Introduction

Optolong improved extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelen

1.  Optolong OIII Introduction

Optolong narrowband OIII filter is designed for nebula observation allowing 18nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII

1. Photometric Filters 

“Historically our Solid-State Photometers used custom filters designed to transform well to the Johnson photometry standards with our detectors.”

UBVRI filters are not for as

1. Photometric Filters 

“Historically our Solid-State Photometers used custom filters designed to transform well to the Johnson photometry standards with our detectors.”

UBVRI filters are not for as