Tombaugh Spark Notes → https://docs.google.com/document/d/1GmpHzn4atzucNMDDViSyLKdCr1Pnl_Evps9-FeqhfKk/edit
Verbose notes on Tombaugh can be found here (NOTE - these might be slightly outdated, but they are generally correct) → https://astro.nmsu.edu/organizations/agso/observatory-outreach.html