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Optolong OIII Filter 6,5nm 2" (50.8mm)
US$ 200.49Extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Optolong SII Filter 6.5nm 2" (50.8mm)
US$ 200.49Extra narrowband SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Optolong Kit L-RGB 2" (50.8mm)
US$ 293.16The LRGB filter kit is designed for maximum contrast and with extremely high gradients for a clear differentiation of light colors
The L-Pro CCD filter improves the contrast of deep-sky objects and reduces the sky background.
Optolong Kit LRGB 36mm
US$ 239.70The LRGB filter kit is designed for maximum contrast and with extremely high gradients for a clear differentiation of light colors
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