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Bill Gottesman Precision Sundials LLC Renaissance Focusing Sundial

Bill Gottesman Precision Sundials LLC Renaissance Focusing Sundial. A “Watch” accurate dial using Focused Light. Notable Features. Modified Equatorial Dial Scale is Expanded Uses Focused Light Adjustable for Latitude, Eot, and Daylight Savings Software assists alignment

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Bill Gottesman Precision Sundials LLC Renaissance Focusing Sundial

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  1. Bill GottesmanPrecision Sundials LLC Renaissance Focusing Sundial A “Watch” accurate dial using Focused Light

  2. Notable Features • Modified Equatorial Dial • Scale is Expanded • Uses Focused Light • Adjustable for Latitude, Eot, and Daylight Savings • Software assists alignment • C. M. Lowne in BSS Bulletin 98.1 independently reported similar idea for focusing sundial. • US Patent 6,301,793

  3. Modified Equatorial Dial • Equatorial Circle is expanded into a helix to increase its rigidity. • Readable on Equinoxes • Helix connotes the passage of time

  4. Scale is Expanded

  5. Eccentric Equatorial Pipe Dialby Kate Pond

  6. Mirror is 6 minutes wide, but image is focused to 2 minutes across, the same as the sun in the sky

  7. Focused image is crisp.

  8. Cylindrically ground mirrors keep the image in focus at all times

  9. Mirrors and Mount

  10. Mounted Mirror

  11. Set Screw Holes

  12. Single Beam Movie

  13. Adjustable for Eot, DST

  14. Adjustable wedges allow sturdy and accurate setting of latitude

  15. Wedge Graphic

  16. Wedges set for 46 degrees

  17. Software Assists Alignment

  18. Alignment Answer

  19. New Developments • Focused beam is 2 minutes of time wide. Can this be made narrower to allow a more precise reading? • Not with the beam itself, but… • By casting two beams adjacent to each other, the space between them can act as a cursor, and be made as narrow as one desires, even to just a few seconds of time.

  20. Two Mirrors Create Two Focused Images

  21. Two Mirrors

  22. Two Beam Movie

  23. Smithy Granite Machine

  24. End Sawyer Equant Schmoyer Sunquest

  25. Mirror Demon-stration

  26. Like a concave spoon, image inverts when moved away from mirror.

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