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
Over the years, the interplay between nuclear physics, computational astrophysics, and
observational astronomy has been critical to our understanding of the cosmos. Nuclear data and
astrophysical models continue to provide key input to help explain and guide astronomical
observations. Once recent example involves the search for the first generation of stars in the
galaxy, which is predicted to have a rather unique chemical abundance signature compared to later
generations of stars whose composition has been enriched with heavy metals. The predicted
chemical abundance patterns depend sensitively on available nuclear data among other factors. One
important nuclear reaction is the fusion of two carbon nuclei into a magnesium nucleus and a free
neutron. In the past, many astrophysical models simply ignored this reaction because the
available rate estimates were so uncertain. Now, however, a precise measurment of this reaction
at astrophysical conditions has finally been provided using a laboratory accelerator. With the
new measurement, it is found that this reaction is critical to the production of elements with odd
atomic numbers (e.g. sodium, Z=11) in the first stars while also important to heavy-element
synthesis in later stellar generations.
Brian Bucher grew up in northwest Indiana and received his bachelor's degree in physics from
Valparaiso University. He went on to study nuclear astrophysics at the University of Notre Dame
where he received his PhD in 2014 before coming to Lawrence Livermore National Lab as a
postdoctoral research associate. In his free time, he enjoys reading, cooking, and playing video
games with his four young boys.
Dues are due!
It is coming to that time of year when dues are due. While you are at it you might want
to update your memberhsip information too, which you can do by visiting our
After you fill out that form you will be directed to our
to complete the process. This would be a good time for you to add a little contribution
to the club!
Jack Marling Awards
The Jack Marling Award is the award given by the Tri-Valley
Stargazers to a member for their outstanding contributions
to the club over long periods of time. The award includes
honorary free life-time membership in the club. The award
is not given on a regular basis, but can be given at any time
when the board of directors becomes aware of a sufficiently
New awards have now been given to Alane Alchorn and Alan Gorski,
who have given many years of service, tirelessly leading and
participating in nearly every function of the club. Previous
recipients of the award are Don Machholtz, Rich and Barbara Green,
Rich Combs, and Debbie Dyke.
Upcoming star parties
We have planned the following star parties:
for further information.
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.