Just in response to a helpful suggestion - yes - I have heard of the new Vixen SLV range of eyepieces - I didn't bother mentioning them as I didn't think anyone would have one for sale as they are so new. I am simply after
any Vixen 4mm eyepiece - I am not fussy about which particular model but I don't need a widefield as I want to keep the eyepiece small for portability
