Thanks for all your advice and comments. I have looked at the Startravel-80 az3. Refractor and it seems nice and compact. Previously I had the 90 mm f/10 refractor which I found too long and bulky to manage. The only problem I can see with the Startravel 80 is that it has a red dot finder. From my back garden near the city centre the naked eye limiting magnitude is only 3.0 to 3.5 due to light pollution , so a red dot finder would be of limited use. Also as I mentioned I did try to align the finder with the main telescope by focusing on nearby TV aerials
I needed to put masking tape on the finder so that it was a tight fit in the holder. I thought I had linked the main scope with the crosshairs in the finder during the daytime,but at night nothing seems to be aligned.
I have tried contacting local astronomical societies for help,but without any success.
Chris