UNICO M250-2103 40X/0.65 DIN Achromat Objective for M250 Series Microscope, NA 0.65 Condenser, Retractable Front Lens

so hi microbe hunter here bad news bad news for me at least I am a little bit frustrated I just want to show you what I've done over here is this is a phase contrast condenser and a phase contrast an objective and they work together quite well and I've been using them for some time now I was not fully happy with the image quality so I decided well I'm gonna upgrade a little bit and I want to get myself a new objective here also that it could fit everything here on this larger microscope that happy consoles the things here were on the other microscope and I wanted to kind of switch it over so this one over here so I said okay I'm going to upgrade this so what I've done is is i if you have basically bought myself a new phase contrast objective secondhand ebay and the problem is those two things are not compatible anymore okay so that is really frustrating this means that I now have to eit