Cheers Al - your wish is my command! It's mounted in an old lens cap. I cut a small piece of thread off a bodgy eyepiece and glued that in a hole cut in the cap - that way I can use any filter with a 1.25" thread. I now wrap a short tube of black cardboard around the grating as a dew cap.
The photo is an old one showing previous Canon camera and it used to be mounted on an oversize tube ring around a homemade short fl refractor which was hand-guided with slo-mo knob on an EQ1. Now I'm lazy, long live the Vixen Polarie!!
Cheers -