Filters

Explore Scientific Nebula Filter UHC - 2.0"

Explore Scientific Neutral Density Filter ND 0.9 - 1.25"

Explore Scientific Neutral Density Filter ND 0.9 - 2"

2" OIII 8nm (+/-0.4nm) H-alpha 9.5nm (+/- 0.4nm) (originally designed at 10nm, but on a measured basis, it's 9.5nm.)

ND13Lumicon Neutral Density 13 Filter will tone down the glare from the full Moon and allow more planetary detail than ever! Lumicon ND13 transmits...

A Polarizing Filter will help control the brightness of the Sun’s image when using a Lunt White Light Wedge visually. Choose either a 1.25″ or 2″ ...

Optolong L-eNhance is a dual-band pass filter which has been designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. The convenienc...

L-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is a...

Ligh pollution reduction filter Keeps natural color balance to your images Effective for use in ...

Versatile light pollution suppression Quad-bandpass design Isolates key emission lines for nebul...

The Optolong L-Synergy filter is a dual 7nm narrowband solution designed for DSLR cameras, color CMOS sensors, and CCD cameras. It supports telesc...

Extreme light pollution reduction Ultra narrow 3nm bandpasses Isolates key H-alpha and OIII emi...

Includes 1x L-Quad Enhance Filter and 1x L-Para L-Quad Enhance Filter

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

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

Optolong UHC with narrower passband provides higher contrast. Thus it is more suitable for urban environment where you suffer from severe light pol...

Optolong UV/IR Cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are ...

For visual observation

This kit contains a methane filter, an AllSky lens and a lens adapter. It's made for the QHY5III462C camera only.

Dual-bandpass filter for astrophotography Optimized for H-alpha and OIII emission lines Description The William Optics STC Ast...

Multi-bandpass filter for astrophotography 48mm thread-on design for easy attachment Description The William Optics STC Ultra ...