Harvard-Smithsonian Center for Astrophysics (CfA)
60 Garden Street
Cambridge, MA 02138
617-495-7461

Public observing every3^rd Thursday except June, July, August. Lecture followed by rooftop observing (weather permitting). 
http://www.cfa.harvard.edu/events/public_events.html
 

Amateur Telescope Makers of Boston (ATMoB)
978-692-8708

Meetings in Phillips Auditorium at CfA every 2^nd Thursday except August. Clubhouse in Westford, MA open most Saturday nights (weather permitting).
http://www.atmob.org/index.php
 

MIT Kavli Institute for Astrophysics and Space Research 
77 Massachusetts Avenue, 37-287 
Cambridge, MA 02139 
Telephone: (617) 253-7501 
Fax: (617) 253-0861
http://space.mit.edu/
 

Boston Museum of Science
1 Science Park
Boston, MA 02114
617-723-2500
http://www.mos.org

Stargazing at Guilliland Observatory (on garage roof) Friday nights 8:30 PM – 10:00 PM.
617-589-0264
http://www.mos.org/events_activities/social_events&d=1212

Hayden Planetarium
617-589-0264
http://www.mos.org/exhibits_shows/planetarium
 

Clay Center
Dexter Southfield School
20 Newton Street
Brookline, MA 02445
617-454-2718

Public telescope nights most Tuesdays. 
http://www.claycenter.org
 

Boston University
Astronomy Department
725 Commonwealth Avenue, 5th Floor
Boston, MA
617-353-2630

Public Open Night at Coit Observatory most Wednesdays. 
http://www.bu.edu/astronomy/opennight.html
 

Sky & Telescope Magazine
90 Sherman Street
Cambridge, MA 02140-3264
866-644-1377
http://www.skyandtelescope.com
 

Gloucester Area Astronomy Club
Meets 8:00 PM every second Friday at St. Paul Lutheran Church in Lanesville, MA
http://www.gaac.us/
 

North Shore Astronomy Club
Meets 1st Friday of month at Groveland, MA (near Haverhill, MA)
http://www.nsaac.org/default.htm
 

Aldrich Astronomical Society
Meets 2nd and 4th Saturday in Paxton, MA (near Worcester, MA)
http://www.aldrichastro.org/
 

South Shore Astronomical Society
Meets 1st Wednesday of month, observing 2 Saturdays per month (near New Moon) in Norwell, MA
http://www.ssastros.org/
 

Cape Cod Astronomical Society
Meets 1st Thursday in South Yarmouth, MA
http://www.ccas.ws/
 

Martha's Vineyard Astronomy Club
Vineyard Haven, MA
http://mvaac.fishspace.net/mvaac.htm