I'm actually pretty pleased with my build. I ended up getting a good amount of magnification and I can see craters on the moon in an urban area (Washington, DC). Sadly, there were several things that could've been done much better with more time. I encourage anyone interested in building a telescope to check out my process and modify it as they see fit!
Anyway, let's get started!
What you'll need:
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.
1. Exacto knife
3. Hot glue gun
Let's do it!
Step 1: Get Your Lenses Out!
Step 2: Paint It!
Step 3: Tape It!
Ultimately, I decided that I'd tape the inside of the larger pipe. It's surprisingly easy to do, too. Thread a piece of gaff tape down the pipe and affix it to the edge on opposite sides. Using the smaller pipe that you bought, flatten the tape against the inide of the PVC by sliding the small pipe down the larger one. Make sense? good. Now do that a few times to completely cover the inside.
Step 4: Cut Cut Cut
Step 5: Affix the Lenses
For the smaller lens, cut a hole into a pill bottle cap or some other plastic thing that fits nicely into the smaller diameter PVC. Hot glue your lens in the holder, and stick the holder into the telescope.