LVAAS - THE LEHIGH VALLEY AMATEUR ASTRONOMICAL SOCIETY: Promoting, Facilitating and Teaching Astronomy Since 1957

Welcome to LVAAS, Anonymous
Saturday, October 22 2016 @ 01:15 AM EDT



General Meeting at South Mountain
Sunday, November 13, 7 p.m.

The Mysterious Case of Boyajian's Star (nee Tabby's Star)
Featuring Joshua Pepper, Professor of Physics, Lehigh University

The NASA Kepler satellite has made thousands of major new discoveries in the science of variable stars, exoplanets, and other fields, but maybe none of them is more mysterious, intriguing, or tantalizing than the single object called Boyajian's Star (nee Tabby's Star).  This is an otherwise typical star, slightly hotter and larger than the Sun, but which shows unprecedented changes in its brightness, over many different timescales.  Dozens of explanations have been proposed for this phenomenon, ranging from pedestrian to exotic.  I will describe the behavior of this star, explain why it is so unusual, and review the various explanations that have been proposed.  I will use this case to explain how the scientific community grapples with unexpected and unusual discoveries.  




—    LVAAS    —

THE LEHIGH VALLEY AMATEUR ASTRONOMICAL SOCIETY -- 620B East Rock Road -- Allentown, PA 18103 -- 610-797-3476 --


Founded in 1957, the Lehigh Valley Amateur Astronomical Society (LVAAS) is one of the oldest continuously-operating amateur astronomy organizations in the U.S. The mission of LVAAS is to promote the study of Astronomy and to maintain a meeting space, observatories, and a planetarium.

LVAAS operates two astronomy sites: The South Mountain site in Salisbury Township is the headquarters of the Society. It has a planetarium with a Spitz A3P projector, a 21 foot dome, meeting space, the Red Shift store, library, workshop space, and three observatories. The Pulpit Rock site near Hamburg is LVAAS's members-only dark sky site. At 1600 feet above sea level, the site features five observatories and a pad for member's scopes.

Members who receive training on the scopes may obtain keys to the observatories. LVAAS also maintains a rental "fleet" of telescopes that members may rent at low cost. Members also receive access to The Observer, our online newsletter, as well as reduced subscription prices to Sky and Telescope and Astronomy Magazine. If you want to learn more about astronomy and LVAAS, please join us at our next public star party.


South Mountain Clear Sky Chart  image

Pulpit Rock Clear Sky Chart         image

My Account

Lost your password?

Redshift Store

Order LVAAS Merchandise Online

Current Moon Phase



Older Stories

Friday 29-May

Upcoming Events

Site Events

Saturday 22-Oct
Sunday 30-Oct
Friday 04-Nov -
Sunday 06-Nov
Friday 04-Nov
Saturday 05-Nov
Monday 07-Nov

What's New


No new stories

Comments last 2 days

No new comments

Trackbacks last 2 days

No new trackbacks

Links last 2 weeks

No new links

Media Gallery last 7 days

DokuWiki last 14 days

No new items

Random Image

The Helix Nebula
Browse Album

Who's Online

Guest Users: 3

2254 Pages Viewed
256 Unique Visits

Reg Users
Registered Users: 3