Astrodon Photometrics Sloan and J/C filters big hit at AAVSO/SAS

Based upon excellent test results by AAVSO (see UVBRI or Sloan web pages), the new 100% coated filters were of great interest at the recent meeting of AAVSO/SAS at Big Bear Lake, CA.  For example the 100% coated B filters showed an 84% improvement over the classical B filter made from colored glass.  The UV filter with its 95% transmission can now be useful for measurements.