The website to check all information is www.uacnj.org. According to the website, public programs are through October. The current upcoming event is this Saturday 9/29 Northern Lights.
You don't need to arrange anything in advance, just come on by. The grounds, lecture and club telescopes are open to the public from 8:00 to 10:30 every Saturday evening from April through the end of October.
Check the website. You can just go, but they are generally only there Saturday during the summer.
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