During a phone conversation with Televue yesterday I asked about the soon to be introduced 55mm to 67mm conversion lens for their 55mm Plossl. I was refered to Al Nagler who shared several pieces of information I had not heard. Al said that the lenses had just come in and was eager to make sure that I understood that adding the lens to the Plossl would require about 1" more outfocus than the Plossl without the add-on lens, either using the focuser or by adding an extension tube. I asked if the new lens would improve the off axis performance, specifically the field curvature, of the eyepiece. Al responded that the performance would improve but that he was unable to quantify by how much.
Following the discussion I asked when or if I could order the new lens. I was told the cost of the lens is $95 plus shipping if ordered from Televue and that I could place an order then. I bit my lip and ordered one. I will be glad to share my results with the lens once I have had a chance to try it and compare it to to my Russell 50mm. Considering the weather here in this part of Alabama at this time of year I am not sure when that might be.