Question

If we want to make a refracting telescope which components do we need

Answer 1

1. Two lenses of different magnification. I got one out of a handheld magnifying glass (the smaller in size lens) and from a scientific equipment shop. Make sure the larger diameter one also has larger magnification power.  

2. Two lengths of PVC pipe. I used a meter of 3" diameter pvc and a half meter of 2" pvc (I think). The smaller diameter PVC fit nicely inside the larger one, and, with a little finessing, the lenses fit in each. Make sure each length of PVC is a bit greater than the focal length of the lens.

3. Gaffers Tape. Gaff, Gaft, whatever. It's that wonderful black tape that's super easy to tear, doesn't leave marks, and isn't very shiny.

4. Flat black spray paint.  

Tools:

1. Exacto knife

2. Dremmel  

3. Hot glue gun