Thanks Chris

Had me scratching my head after blacking the tube inside etc.
Here's my latest incarnation. The dew shield and cover are made from a Pad Repair Fitting and 100mm pipe cap. The Repair fitting is a lovely tight fit over the front spigot, no fixing required. I cut the minor diameter section back 50mm from the angle, this allows the end of the lens housing to just protrude through into the major diameter.
Was wondering why your lens fitted neatly over the 90mm tube as mine was a bit sloppy. Found that heavy duty 90mm did the trick as it has slightly thicker walls.
I've used a plastic focuser so assembly comes in at 1Kg with the 25mm eyepiece fitted.
You've done a beaut job of yours. JJJnettie is right, it sure is nice when you look at it and think "I made that"
Cheers
Bill