Does anyone know a supplier who can sell direct vision spectroscopic prisms otherwise known as Amici prisms.I'm looking for a source of 5 prism or 3 prism versions? Thanks Nick Nick Martin, Bonnyton House, By Ayr, Ayrshire KA6 7EW ,Scotland, UK. Latitude 55 24'56" Longitude 4 26' 00". To stop receiving all 'netastrocatalog' lists, use the Web form at: http://www.visualdeepsky.org/subscribe.html