Optolong

OPT carries a large range of Telescope Filters manufactured by Optolong, who has successfully developed more than 20 popular astronomical filters. Filters such as the Five bands bandpass filter L-Pro have gained popularity among astrophotographers and amateur astronomers alike.

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OPT carries a large range of Telescope Filters manufactured by Optolong, who has successfully developed more than 20 popular astronomical filters. Filters such as the Five bands bandpass filter L-Pro have gained popularity among astrophotographers and amateur astronomers alike.

Optolong also manufactures others filters such as UHC, H-Beta, O-III, H-Alpha, SII, LRGB, Night Sky H-Alpha which provide high precision wavelength, high transmittance, deep cutoff, good surface finish and no pinhole.