Adapter for a 2" diagonal

Hi group,

I have recently bought a 2" diagonal for my SCT. It screws directly onto
the rear cell. However, I have a dual speed Crayford style focusser
attached which the diagonal will not fit. I need a 2" diameter
externally threaded tube which replaces the SCT fitting on the diagonal
and screws into the diagonal retaining the clear 2" aperture and then
slides into the focusser. Does that make sense?
I would appreciate any suppliers or where I might obtain such an item.

Thanks,
jpd
--
john p davies

"john p davies" wrote in message
...
Hi group,

I have recently bought a 2" diagonal for my SCT. It screws directly onto
the rear cell. However, I have a dual speed Crayford style focusser
attached which the diagonal will not fit. I need a 2" diameter
externally threaded tube which replaces the SCT fitting on the diagonal
and screws into the diagonal retaining the clear 2" aperture and then
slides into the focusser. Does that make sense?
I would appreciate any suppliers or where I might obtain such an item.
Unfortunately, you will never retain all the aperture with this. However
the loss is small.
Look at:
http://lumicon.telescopes.com/produc...ter-50088.html

Best Wishes