| Astronomical League |
An umbrella organization of amateur astronomy clubs and societies
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Astronomical Society of Harrisburg
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Astronomical Society of Harrisburg |
Bucks-Mont Astronomical Association
|
Buck-Mont's premier Astronomical Association
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ChesMont Astronomical Society
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ChesMont Astronomical Society |
Chester County Astronomical Society
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Chester County Astronomical Society |
90 Millimeter Observatory
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Dan Acker's Personal Observatory |
Dark Horse Observatory
|
Amateur astrophotography
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Lackawanna Astronomical Society
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Lackawana's Astronomical Society |
| Pennsylvania Outdoor Lighting Council |
Help Fight Light Pollution! |
| Skies Unlimited |
Local dealer for astronomy gear and telescopes
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| Mid-East Region of the Astronomical League |
Mid East Region of the Astronomical Society |