For our September meeting, Tom Heisey gave a talk on telescope optics and then let the members experiment with some optics kits. Based on the volume in the room, the members enjoyed experimenting with the kits!
I’ve updated the presentation notes based on member comments and things that came to mind during the talk. Hopefully, I explained some items better in the PDF! You’re welcome to download the two PDFs and even use them in your astronomy club, but please give me credit.

I also included a second document taking a deeper dive into ray tracing diagrams that I couldn’t cover in the presentation:
As always, I strive to be accurate. If you find errors, please let me know!
More Stories
Tonight’s Ransom Canyon Star Party is cancelled 9/19/26
Explore the Lunar Eclipse at TTU’s Astronomy Event
Tonight’s Ransom Canyon Star Party is cancelled