Skywatcher 150P Dobsonian eyepiece holder. in Discussions - Scopes / Whole setups Posted September 16, 2012 Here are some photos as promised. As you can see, I hope, I've now found the adapter ring (if that's the right term!) that goes into the focuser - the one I bought from eBay seems to be smaller and no good for my telescope sadly. So, now I'm missing what fits into that adapter to hold the eyepiece in place I presume? I'm getting a bit lost again!