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. Lance Sims
The James Webb Telescope - A Glimpse of Things To Come

Friday, May 19, 2017
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, May 22, 2017, 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

May's meeting

In 2018, an Ariane 5 rocket will blast off from Earth and begin a long, 1 million mile journey to the second Sun-Earth Lagrange Point. Its cargo will be arguably one of the most expensive and precious instruments NASA has ever made: the James Webb Space Telescope (JWST). As the successor to the Hubble Space Telescope, JWST will peer deeper into the universe than ever before. It will unlock secrets that we haven't even begun to imagine. In this short talk, Dr. Lance Sims will give an overview of the astounding engineering challenges behind JWST and describe some of the scientific questions it will try to answer. He will also try to convey that all of his previous statements depend on mission success, which is by no means guaranteed.

Lance Simms is a physicist/engineer at Lawrence Livermore National Laboratory. He received a B.S. in Physics from University of California: Santa Barbara in 2003 and a Ph.D. in Applied Physics from Stanford in 2009. His Ph.D. work focused on the application of Hybrid CMOS imagers in astronomy. Nowadays, he loves working with whatever detectors he can get his hands on (infrared, visible, X-ray, you name it), and he currently characterizes and programs imagers for optical payloads on small satellites.

H2O Open House

Our next open house is scheduled for Saturday, May 20th at the club's dark sky site, Hidden Hill Observatory, aka H2O.

Anyone can come to our open houses, not just club members; but you cannot go there without an escort. We will meet at the corner of Mines and Tesla Roads at 6:30 PM, then caravan to the site on a drive that takes about 50 minutes. The admission is $3/car; please bring the exact amount. There is no gas on the way, so be sure to gas up before leaving. The site is essentially in the wilderness, so there is no electricity and water, and there are only a couple of pit toilets. Cell-phone reception is iffy at best. While there is a picnic table there, you really should bring your own chair. If you need to see what you are doing, bring a red LED flashlight, not a white-light flashlight. And use masking tape over your car door and interior lights, or pull the fuse. If you don't have a scope, you can always find someone who is willing to let you look through theirs. And don't forget to bring your binoculars. Expect to stay until about midnight and get back to Livermore at around 1:00 AM.

Upcoming star parties

The following star parties hsvr been scheduled: Please contact for further information.

The theme for the next Tesla meeing is Messier objects. 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. Each Tesla star party will have a theme, including topics like a tour of the constellations, planets and asteroids, or binocular highlights.

TVS Crystal Wine Glasses For Sale

wine glass 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 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.