Skywatcher 70x700

Hi everyone,

I'm looking to purchase a Skywatcher 70x700 OTA (from the AZ2 setup) to use
as a guide scope. I am trying to find a tube ring set which will suit to
mount it.

A few quick questions in case anyone can help:
1. Can someone please tell me the outside diameter of the 70x700 OTA such
that I can find rings to suit?

2. I see the 70x500 is shown in pictures with tube rings. Would these suit
the 70x700 OTA? (are the scopes the same diameter?)

3. Can anyone recommend some rings for this scope? (from other manufacturers
even). I'm only after simple clamp style rings, not 3 point adjustable
rings.

4. Can anyone tell me how much the OTA weights? (just the tube).

Thankyou,
Roger