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Working Notes
Working Notes

on astronomy, electronics, music—and whatever else I’m up to.

  • Astronomy
    • Astrophotography
    • Observatory Log
    • Guides, Tips and Notes
  • Bread Baking
    • Kitchen Experiments
    • Recipes
  • Electronics
    • Experiments
    • Concepts
    • Tools
  • Essays
  • Music
    • Guitar Notes
    • Practicing
  • Notebook
Working Notes
Working Notes

on astronomy, electronics, music—and whatever else I’m up to.

  • Guides, Tips and Notes, Observatory Log

Rethinking the Messier Marathon

Every spring, the approach of the Messier Marathon brings a familiar surge of excitement. During the new moon in March it is possible to see all 110 Messier objects in one night. It’s one of the great traditions in amateur astronomy—a shared…

  • Hans
  • April 2, 2026
  • Guides, Tips and Notes

Constructing the Observatory

When my wife Lynn and I decided to retire we wanted to downsize and move out of the home in Danville, California that we lived in for 29 years.  We wanted to move to a place that is less crowded…

  • Hans
  • April 2, 2026
  • Guides, Tips and Notes

Keeping a Log of Visual Observations in Astronomy

Maintaining a log or notes of visual observations of the night sky is a rewarding practice for amateur astronomers and casual stargazers alike. Whether observing with the naked eye, binoculars, or a telescope, a systematic approach to recording observations can…

  • Hans
  • April 2, 2026
  • Astronomy
    • Astrophotography
    • Observatory Log
    • Guides, Tips and Notes
  • Bread Baking
    • Kitchen Experiments
    • Recipes
  • Electronics
    • Experiments
    • Concepts
    • Tools
  • Essays
  • Music
    • Guitar Notes
    • Practicing
  • Notebook

I’m a retired engineer and teacher with long-standing interests in astronomy, electronics, music, and craft. I operate Ranchita Canyon Observatory and enjoy exploring ideas through experiments and observation.

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