LVAAS General Meeting

Sunday June 11, 7 p.m. at LVAAS South Mountain Grady Planetarium 

and on Zoom. 


"Optics: Bringing Photons to your Retina Since 1610"


Joe Zitarelli

Joe will begin with a brief review of the anatomy and physiology of the human eye. He will then go into various devices used in Astronomy and how their optics vary. He will then transition into a discussion of light transmission and how optics and conditions affect what we see and image.

Joe's interest in Astronomy began in High School where there was a planetarium and a 20" Newtonian Reflector.  Joe further developed this interest in College obtaining a BS in Physics from Penn State University.  He then went on to get his MD at Hahnemann University (now Drexel University) followed by doing a 5 year General Surgery Residency.  Joe has been a practicing General Surgeon since 1988.  After College, Joe's interest in Physics and Astrophysics continued as he tried to follow the Sciences as they developed and made further discoveries.  In 2018 Joe learned of LVAAS and became a member to further his knowledge of Astronomy.



Prospective new members who wish to attend the meeting should email



—    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.

Click here for weather at LVAAS locations.