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Clear Aperture: 127mm
Use the Quark on any F/4-F/9 refractor for even more aperture
many older astronomers are unable to see the lower wavelength and miss out on all the fun
The DayStar Filters "Solar System" filter wheel allows you to view the Sun through up to four different filters with just the touch of a button
The Daystar Quark Prominence model is optimized for prominence viewing
Daystar ERF 130mm with 160mm Cap - E-160N130 Dew Shields By Make_Meade Clear Aperture: 127mm130mm ERF Glass, Cell & 160mm ID Cap For Refractors DayStar Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for light
US$ 19.99
US$ 31.76