Speaker: Joel Martin, Ph.D.
Topic: A Focus on Focusing
- How your “f-ratio” affects focusing
- Why stars never really focus to a point
- How seeing affects your ability to focus
- Where do “donuts” come from?
- Why even “perfect” optics produce color fringes
- What the heck is a Bahtinov mask and how does it work?
- How to use a tri-Bahtinov mask for collimation
In addition, several winners from the Greater San Diego Science fair have received awards from SDAA. They are coming to tell us about their winning projects in a variety of Space and Astronomy based topics.
Register in advance for this meeting:
https://us02web.zoom.us/meeting/register/tZYkf-2rrTgsE9D7YsRX-mGVVgS_ovMJHX5B#/registration
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