Massachusetts Observatories Aldrich Astronomical Observatory Observatory for Aldrich Astronomical Society Astronight Observatory Private Observatory Ayer Observatory Observatory for Milton Academy B.M.C. Durfee High School Observatory Observatory for B.M.C. Durfee High School Blackstar Observatory Private Observatory Cahall Observatory Observatory for Thayer Academy Cat's Paw Observatory Private Observatory Clay Center Observatory Observatory for the Clay Center for Science and Technology David Cole Observatory Observatory for Barnstable High School Dixon Observatory Observatory for Berkshire School Driftway Observatory Private Observatory Edward Knight Observatory Observatory for the Amateur Telescope Makers of Boston Edwalda Observatory Private Observatory George R. Wallace, Jr. Astrophysical Observatory Observatory for the Massachusetts Institute of Technology Gilliland Observatory Observatory for the Museum of Science Harvard College Observatory Observatory for Harvard University Haystack Observatory Observatory for the Massachusetts Institute of Technology Hopkins Observatory Observatory for Williams College Insight Observatory Commercial Observatory John Payson Williston Observatory Observatory for Mount Holyoke College Judsan B. Coit Observatory Observatory for Boston University Loines Observatory Observatory for the Maria Mitchell Association Middlesex School Observatory Observatory for Middlesex School North Ashburnham Astronomical Observatory Private Observatory Oak Ridge Observatory Observatory for the Harvard-Smithsonian Center for Astrophysics Old Observatory Observatory for Wheaton College Orchard Hill Observatory Observatory for the University of Massachusetts Amherst Richard Schueller Observatory Observatory for the University of Massachusetts Lowell Rockbottom Observatory Observatory for the Skylight Astronomical Society, Inc. Smithsonian Astrophysical Observatory Observatory for the Harvard and Smithsonian Center for Astrophysics Springfield Science Museum Observatory Observatory for the Springfield Science Museum Starhoo Observatory Private Observatory Vestal Street Observatory Observatory for the Maria Mitchell Association Werner Schmidt Observatory Observatory for Cape Cod Astronomy Wheaton College Observatory Observatory for Wheaton College Whitin Observatory Observatory for Wellesley College Wilder Observatory Observatory for Amherst College
