Welcome to the Tri-Valley Stargazers Astronomy Club's web site. There is a lot
of information here on the many activities of the Tri-Valley Stargazers
(TVS). Learn why you should join the club to get the most out of your
amateur astronomy hobby in the east San Francisco Bay Area.
The Latest News & Upcoming Events
Dr. Ken Lum will give Part two of his presentation on the evolution of the reflecting
telescope. In August he spoke about the invention of the reflecting telescope by
Sir Isaac Newton in 1668, through to the development of large aperture reflectors
in the 19th Century that were hampered by poor design. This month he will talk
about the late 19th Century resurgence of the reflector as the primary tool for
observational astronomy with the coming of the ability to apply high efficiency
reflective coatings to glass mirrors, better ways to test the accuracy of their surfaces,
and improved mechanical telescope mountings. He will discuss the history of
the people who were most responsible for this change to the dominant telescope
technologies used today.
Dr. Kenneth Lum is retired from the practice of Emergency Medicine. Since high school, he has also been an
enthusiastic amateur astronomer, having built two telescopes at the Adler Planetarium in Chicago and a large Newtonian
reflector when he reentered amateur astronomy in 1986. He pursued an interest in astronomical photography during the
1990s and continues to study the history of astronomy and astronomical instrumentation. Dr. Lum is currently
interested in ways to enhance the performance of small telescopes with the use of a photomultiplier eyepiece and
astronomical video cameras. Since 1994, he has been traveling with the Antique Telescope Society almost annually
visiting different historical astronomical observatories.
Upcoming star parties
We have planned the following star parties:
- September 24th, Tesla Winery club star party
- September 28th, Outreach at Green Elementary School in Dublin
- October 6th, Outreach at Livermore Library
- October 7th, Pleasanton RADD outreach star party at the Senior Center
- October 21-23, Antique Telescope Society annual meeting, Flagstaff AZ
- November 9th, Outreach at St. Michael School
- December 7th, Outreach at Sunset Elementary School in Livermore
for further information.
The H2O Open Houses will be open to all club members and
the public. The Tesla Winery club Parties will be open to club
members and their guests. Start and end times for the parties
will be announced later, but we usually plan to arrive at
the observing site about 30 minutes before sunset and wrap
up around midnight. Mark your calendars now!
The upcoming September 24th club star party will be the last for the year.
The theme for this party is "Binocular Highlights". Roland will be ready
to lead us through perhaps a dozen interesting targets that should keep us
busy for the night!
TVS Crystal Wine Glasses For Sale
TVS is offering elegant crystal wine glasses for sale to club
members. You don't have to drink wine to enjoy the beautiful
TVS logo-etched stemware. Use them for your favorite beverage,
or they can be used as a beautiful container for small
plants. They are the perfect gifts for loved ones or friends.
Look for them at club meetings, where they will be sold for
$10/each. Don't drink alone, buy two! Support TVS. Thanks to
who got these wonderful glasses.
TVS Logo Wear
You may have seen some TVS members wearing shirts and jackets
embroidered with the TVS logo. If you are interested in obtaining an
embroidered logo item, you can do so by ordering whatever you would like
Land's End's Corporate Sales
section and specifying TVS logo #0118948. You will need to set up an account, which will
ask for the logo number and the TVS customer number (3452021).
TVS has also set up shop at
for members to buy non-embroidered TVS logo wear. You can have the TVS
logo put on t-shirts, mugs, buttons, hats, coasters, etc. You buy
through Cafepress, and Cafepress sends TVS a portion of the proceeds.
Visit the web site to see all the TVS logo possibilities.