This is the SolarScope that my Son's school won after entering the Transit of Venus Competition. They were having some problems getting the image to focus and asked if I could have a look at it. It was an issue with the focal length. The problem was fixed by adding a rubber band to lock the position of the tube. The band can be seen in the 1st and 2nd images. It now works a treat.
Cost of the rubber band, less than a cent. A focused image of the Sun showing sharp sunspots.....Priceless!
This is a great piece of kit.
The only problem is that I now have to give it back.