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

Welcome to LVAAS, Anonymous
Saturday, April 20 2019 @ 12:24 PM EDT

General Meeting Notice

 LVAAS General Meeting: Open to the Public

Sunday, April 14 at 7 p.m.

Stellar Fingerprints: An Introduction to Spectroscopy
Spectroscopy is the study of the amount of light from a star as a function of wavelength. As light passes through the star, atoms in the photosphere absorb photons of certain wavelengths, producing spectral features like Balmer lines. In this talk, I will introduce the basics of spectroscopy and explore physical processes that impact the shapes of spectral features. I will also describe my research of measuring the physical parameters of massive stars, like effective temperature, surface gravity, and rotational velocity, by fitting model spectra to observed spectra.




Richard Hanes, Lehigh University

Richard Hanes is a fifth year physics graduate student at Lehigh University studying spectroscopic parameters of massive stars with his advisor, Professor Ginny McSwain. Richard received his Bachelor’s degree in Astronomy and Astrophysics from the Pennsylvania State University in 2014 and his Master’s degree in Physics from Lehigh University in 2016. He has presented his research at several conferences and meetings, including the 229th AAS meeting in Grapevine, Texas.


Star Party

* * * Star Party * * *

LVAAS Star Party Saturday, April 13

6:00 p.m. - Planetarium Show for younger kids
7:00 p.m. - Lecture by David Moll, "So You Want To Buy A Telescope"
8:00 p.m. - Planetarium Show

Arrive early! Seating is first-come, first-serve.

LVAAS Headquarters
620 B East Rock Road
Allentown, PA 18103-7525


Click Here for Dave Moll's slides about buying your first telescope!

Telescopes will be open if the skies are clear!

Open to the public. Donations accepted.



LVAAS South Mountain HQ Construction Video

 The Construction of LVAAS HQ

YouTube video!

This fascinating 33-minute film has a history that is almost as long and convoluted as LVAAS itself, and its colorful facilities and people. Originally shot on black and white film by Walter W. Leight, it was later transferred to videotape by Dan's Camera City, and narrated by Paul Shenkle, Bill McHugh, and George Maurer. From there it found its way (in 3 versions) onto a DVD possessed by LVAAS Programs Director and club historian, Sandra Mesics. Now, we have taken the longest, unedited version (the one without any music) and uploaded it to Youtube, which has enhanced it to make it more enjoyable than ever.

Featuring many of the founding personalities of LVAAS, this film reveals the very bones of our organization as well as our headquarters building. Enjoy a rarely-seen view into the beginnings of LVAAS!


—    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

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