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China 152mm/6"inch Bird/Jones equatorial newtonian reflector telescope China 152mm/6"inch Bird/Jones equatorial newtonian reflector telescope add 152mm/6"inch equatorial Newtonian Bird/Jones reflector telescope to your favorite 152mm/6"inch equatorial Newtonian Bird/Jones reflector telescope sitemap
Home > Telescopes > Professional Instruments > Birefringence Filters > Birefringence Filters
Item No. : Birefringence Filters require sample
31.7mm/1.25" PL25mm empty
A special optical instrument, composed mainly of birefringent crystals such as calcite, quartz, and polaroids. It provides monochromatic light with a very narrow passband (in the visual range of 0.05A) for modern solar physics. We have produced 20 sets, including the most complicated one in the world (nine-channel birefringent filter). 10 sets have been exported overseas. This photo shows a 0.125A/6302A filter for Korea.
 
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