Oldfort

Stick a www. in front of stickwithusltd, and it seems to work, although it doesn't link to a specific product.

It seems much better now (12.15). Thanks

What I have found is that the jaws on some vixen style clamps are too deep (eg on the Baader clamp) so that the ridge on the top of the redcat bar gets in the way, and cause the bar to ride up a bit. But other clamps, eg the standard clamp on a skywatcher AZ-eq5 or the ADM dual vixen/losmandy clamp, are a bit shallower and don't have any problem. The redcat bar is also about 1.5 - 2mm narrower than another vixen dovetail bar that I have.

It's still there, and open to members of the Flamsteed Astronomy Society (and maybe other). There are viewing nights from October to March (I think). I don't think it is used for research these days.

Yes, that's the one I have used. It weighs next to nothing.

For visual use, straight through, I have found a 15mm spacer works great. This is with a televue 32mm plossl, or 19mm panoptic. Inevitably, the skies have been obscured since I got all the bits.