Hey Guys, many thanks for your swift responses. I thought a cable release would be out of the question and using the HLD-3 adding that much weight to a telescope would not be sensible. Your idea of using a small mirror, Dave, might be a possibility. Will set the scope up and fit the camera to see what clearance I have. shouldn't be too difficult to site on the scope body.
Thanks again Guys, really impressed with the responses.
BigAl