DO MIKOŁAJEK POZOSTAŁO TYLKO DNI
ZAMÓW DZIŚ A PRZESYŁKA KURIERSKA DOTRZE NA 100%
H-alpha bandwidth filter, 40 nm wide, in 1.25 "mount. FWHM 40 nm is the right choice for SLR and camera owners with a relatively small potential well, wanting to try some strength in serious deep sky astrophotography.
(measurements on the Varian Cary 100 spectrophotometer, July 2015)