Anúncio inactivo - foram encontrados anúncios semelhantes em Fotografia em Porto Judeu.
Skywatcher OIII filter 1,25”
The O-III narrowband filter is specially designed for the observation of diffuse and planetary nebulae.
The O-III narrow band-pass filter isolates just the two doubly ionized oxygen lines (496 and 501nm) emitted by diffuse, planetary and extremely faint nebulae.
O-III filters are best suited to telescopes with 8" or larger apertures and can produce near-photographic views of the Veil, Ring, Dumbbell, Orion and many other nebulae.
Effective under even heavily light-polluted skies!
Como novo na caixa pouco uso