filter set today from Telescope House, (brilliant company, really good to do business with, stuff's always in stock and with you the next day. I bought a 5x Powermate from them and couldn't get on with it, and they swapped it for a 2.5x Powermate, no problem).The filters have a weird mirrored surface.
Here they are installed in the Astro Engineering 'Imagers filter wheel'... now where's Mars?!
