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

Presenter: Claudia Alexander
Rosetta: Wild Bounce at Comet Churyumov-Gerasimenko

Friday, February 20, 2015
Doors open at 7:00 p.m.
Show & Tell and Talk start at 7:30 p,m.

Unitarian Universalist Church
1893 N. Vasco Rd., Livermore

Next Board Meeting

Monday, February 23, 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

February's meeting

For February we will be presenting a video of a recent SETI Institute talk. It was given by Claudia Alexander in December of last year at the SETI Institute, about a month after the landing of Philae on Comet CG. It is part of their Tuesday noontime consortium series. The intention is to try something different, and expose TVS folks to the availability of the SETI talks, whether in person or on YouTube. The presentation will last 45 minutes.

Rosetta is the third cornerstone mission of the European Space Agency's (ESA) Horizon 2000 Programme. It's goals are to examine some of the original material of the solar system with a comprehensive evaluation of the minearologic, isotopic, and organic constituents of a comet; understand how the body works as a machine to absorb and re-radiate energy from the sun; and understand more about the origins of the solar system.

This talk will explain the science background of some of the mysteries of comets including pros and cons about why we think comets might have brought Earth's water, concepts regarding missing nitrogen in the outer solar system, and material the comet is made of (CAIs & IDPs). The talk will include early images of the comet's activity, then discuss the 60 hours of time spent on the comet's surface, and finally present an overview of initial findings.

What's Up for February

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

Dues are overdue!

If you haven't paid your dues yet, please do so. You can do that on line by going to our membership web page.

TVS membership is open to anyone with an interest in astronomy. Amateurs and professionals are equally welcome; skilled amateurs comprise the majority of the membership. You do not have to own a telescope in order to be a member. The term of membership is one calendar year - January through December.

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.