Hi Grant,
Suggest you look at http://webcaddy.com.au/astro/adapter.htm
Item "F2-VFR-T" might fit your needs at a good price, Im using one which works well in both the SCT and the ED80, bit of Coma at F5 which I can live with.
Hi grant
I use an 18cm focal length acromatic lens in my lx90 and it works fine . seems to achieve about .6 reduction . i can send you some pics of the moon showing with and without if your interested
philip
Hi grant and phil,
I used an achromatic lens from an old spectroscope telescope, its about 2.5 cm in daimeter witha focal length of about 18cm. I force fitted it into a rubber eye cup from a binocular microscope and trimmed the rubber to make it cylindrical. it is a push in fit into the visual back of the lx90 before you attach the screw on adapter that takes the star diagonal. I got the idea from an amateur from a yahoo group who stated in one of his astrophotos that he used a homemade focal reducer. on contacting him he said he used the achromatic objectives from binoculars. So i experimented with a variety of lenses and found the one above to work. Im sure it could be refined but my "Heath Robinson " focal reducer works for me.Have attached some photos. one of the moon without and one with the focal reducer. Also a photo of m42 with lpi and focal reducer.
philip