Filters-Imaging

Optolong IR Pass 1.25in Filter Atmospheric seeing and distortion is much reduced at longer IR wavelengths and as such, the IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance...

Optolong IR Pass 2in Filter Atmospheric seeing and distortion is much reduced at longer IR wavelengths and as such, the IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance...

Optolong L-eNhance 1.25in Filter Designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. Isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. Good for use in heavily light...

Optolong L-eNhance 2in Filter Designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. Isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. Good for use in heavily light...

Optolong L-eNhance EOS-C Filter Designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras. Isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. Good for use in heavily light...

Optolong L-Pro 1.25in Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong L-Pro 2in Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong L-Pro EOS-C Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong L-Pro EOS-FF Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong L-Pro NIK-FF Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong L-Pro SONY-FF Filter L-Pro is a multi-bandpass filter offering better color balance by maximizing the transmission band.  A good choice for light pollution suppression.

Optolong Moon and SkyGlow 1.25in Filter Designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light. 

Optolong Moon and SkyGlow 2in Filter Designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light. 

Optolong OIII 6.5nm 1.25in Filter Designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through. which corresponds to OIII emission lines. Reduces the transmission of artificial light including mercury vapor,...

Optolong OIII 6.5nm 2in Filter Designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through. which corresponds to OIII emission lines. Reduces the transmission of artificial light including mercury vapor,...

Optolong OIII 6.5nm 31.2mm Filter