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.


Next Public Meeting

Speaker: Dr. Julia Vogel
Unraveling the High-Energy Universe with NuSTAR and Peering at the "Dark Side" of the Cosmos

Friday, April 17, 2015
Doors open at 7:00 p.m.
Show & Tell starts at 7:30 pm
Talk follows

Unitarian Universalist Church
1893 N. Vasco Rd., Livermore

Next Board Meeting

Monday, April 20, 2015, 7:30 p.m.
Round Table Pizza
1024 E. Stanley Blvd, Livermore

Members are always welcome at board meetings. Pizza is optional.

The Latest News & Upcoming Events

April's meeting

The Nuclear Spectroscopic Telescope Array (NuSTAR) is a NASA small explorer mission and was launched in June 2012. Its primary mission goal is to bring the high-energy Universe into focus. It studies the cosmos at its extremes by observing exploding stars, hidden black holes and other exotic objects in an entirely new light. In addition, NuSTAR is also looking at a closer and more familiar star (our Sun) to understand its high-energy emission better and search for dark matter particles, which are expected to make up about 25% of all matter in the universe while "normal" matter as we know it contributes a mere 5%. Together with ground-based experiments, such as the CERN Axion Solar Telescope (CAST), NuSTAR will shed some light on the "dark side" of the Universe.

Dr. Julia Vogel is a staff scientist in the X-ray Science and Technology group of the Physics Department at Lawrence Livermore National Laboratory (LLNL). She works on solar axion dark matter searches (CAST, IAXO) and hard x-ray astronomy using focusing multilayer-coated x-ray optics (NuSTAR). She received her Ph.D. from the Albert-Ludwigs University of Freiburg, Germany, in 2009 in experimental astroparticle physics. Her primary research interests include the search for dark matter using novel, low-background detectors in combination with X-ray optics (CAST, IAXO experiments). Currently her work focuses on the application of advanced multilayer techniques in astrophysics. As a member of the NuSTAR instrument and science team, Julia studies neutron stars with very high magnetic fields (called magnetars) using this state-of-the-art NASA Small Explorer mission. NuSTAR is also scheduled for solar observations and Julia will work on using these data to search for axions combining her astroparticle research work with x-ray astronomy instrumentation and analysis.

Upcoming star parties

We have tentatively planned the following star parties: Please contact for further information.

What's Up for February

Roland gave February's What's Up presentation. You can see it here

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 through 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 Cafepress 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.