delivered anti-dew presentation

Delivered my presentation on avoiding dew (or frost) on the telescope or camera at the RASC Toronto Centre members night at the David Dunlap Observatory. In an effort to go paperless, I showed my presentation without providing a handout. But I put all the notes online for reference purposes. I also made a PDF document version available. And, for the first time, at the end of the presentation, I showed an embedded QR code...