Grab myself a Telrad yesterday at Bintel. What a useful device it is! Save many frustration attempts finding objects in the sky and my sore back from looking into the viewfinder all the time. If you have a goto mount, this helps finding alignment stars with ease. Also, much easier to predict when the clouds are coming in on the object you are looking at.
There are 3 red circular HUD with adjustable brightness so you can blend the HUD to the foreground stars. 3 adjustable collimating screw for pinpoint accuracy.
If you haven't got one yet, I highly recommend this magic device.
http://telrad.telescopes.com/images/37744alt.jpghttp://telrad.telescopes.com/images/telradrings.jpg
http://telrad.telescopes.com/images/telradsigh_2.jpg