Next Planetarium Show / Stargazing Night:

LIGO: How to Catch a Gravitational Wave

at Ritchie Observatory is Saturday December 8, 7:30 pm.


The Laser Interferometer Gravitational-Wave Observatory (LIGO) recently detected a disturbance in the space-time continuum caused by two neutron stars crashing together. The three scientists responsible for this achievement won the 2017 Nobel Prize in Physics. What is LIGO? What does it do? What did it find? And, Why is this important?

Frank Petrie and Jim Thrash will explain how LIGO provides a tantalizing glimpse into the strange world of Einsteins general relativity, confirms a 100-year-old prediction of gravitational waves, and opens the door to the new field of gravitational-wave astrophysics.
Afterwards, we will observe clouds and/or rain. On the off-chance the sky is clear, astronomers will be on hand with telescopes. Free to members, $2.00 donation suggested for nonmembers, $5.00 for families.

Information: (206) 842-9152
Web site: http://www.bpastro.org/
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BPASTRO Kids

December 8th

Join us as we try and solve a mystery using fun scientific techniques!

All ages welcome, great for PreK-Grade 4/5 with their caregivers Battle Point Observatory | BI STEM library is open during this time! Donations help cover the cost of supplies

All ages welcome, suggested $5 donation helps to cover costs.

See the BPAstro Kids Facebook PageFB-f-Logo__blue_72

The Latest Posts

We are making parts to upgrade the Ritchie

  • We are refurbishing the Ritchie Telescope with help from BARN and the City of Bainbridge Island.
  • Preliminary CNC work for new pillow block bearing for declination axis.

    A piece to hold the dec drive gearing.

    The menu item "Steve's Pictures" is now populated.

    SUNDIAL STATUS Pictures of Sundial Construction & Installation Please donate to our Sundial Project so we can finish. Thank you.
    Deck for the Richie
    This Saturday (2/7/2015) Malcolm, Steve, Nels (l to r) & Marty were busy, knee deep in sawdust, working on the deck platform for the Richie. Once completed, the new deck will provide a single surface for observing at the telescope. A ladder will be needed but it will be much smaller and not tied to the dome. The End Result.
    The Ritchie is now a much more accessible telescope.