Alabama
Chandler Mountain Observatory
University of Alabama Observatory
Alberta
University of Alberta Observatory
Rothney Astrophysical Observatory
Arkansas
ATU Observatory
Arizona
Biosphere 2 Observatory
Flandrau Observatory
Kitt Peak Observatory
Lowell Observatory
Mt. Graham Observatory
Multiple Mirror Telescope Observatory
National Undergraduate Research Observatory
National Solar Observatory
Steward Observatory
Whipple Observatory
WIYN Observatory
Baja California
Astronmico Nacional Observatory
British Columbia
Climenhaga Observatory
Dominion astrophysical Observatory
Gordon MacMillan Southam Observatory
Prince George Astronomical Society Observatory
University of British Columbia Observatory
California
Big Bear Observatory
Brackett Observatory
Chabot Observatory
CSUS Observatory
Robert Ferguson Observatory
Foothill College Observatory
Fremont Peak Observatory
Garvey Park Observatory
Griffith Observatory
Group 70 Observatory
Henry Grieb Observatory
Lick Observatory
MIRA Observatory
Mt. Laguna Observatory
Mt. Wilson Observatory
OCA Observatory
Palomar Observatory
Ricard Observatory
San Francisco State Observatory
Sonoma State University Observatory Observatory
TDS Observatory
Westmont College Carroll Observatory
Wilcox Solar Observatory
Colorado
Chamberlin Observatory
Colorado College Observatory
Mt. Evans Observatory
Sommers-Bausch Observatory Observatory
USAF Academy Observatory
Connecticut
Olin Observatory
Stamford Museum Observatory
Van Vleck Observatory
WCSU Observatory
Delaware
Mt Cuba Observatory
Florida
Fox Observatory
CFAS/UCF Robinson Observatory
Georgia
Bradley Observatory
Fernbank Observatory
Hard Labor Creek Observatory
West Georgia College Observatory
Hawaii
Air Force Maui Optical Station Observatory
Bishop Museum Observatory
Gemini 8m Observatory
Keasa Observatory
Keck Observatory
LCC Observatory
Lure/Mees Observatory
Manua Kea Observatory
Faulkes Observatory
Mauna Loa Solar Observatory
Illinois
Northmoor Observatory
Ryerson Astronomical Society's Observatory
UIUC Observatory
Iowa
Ashton Observatory
Palisades Dows Observatory
McFarland Park Observatory
McCollum Observatory
Indiana
James Irving Holcomb Observatory
John C. Hook Memorial Observatory
Kirkwood Observatory
McKim Observatory
Valparaiso Observatory
West Lafayette Observatory
Kansas
Crane Observatory
Lake Afton Observatory
Powell Observatory
Clyde W. Tombaugh Observatory
Kentucky
Moore Observatory
Roberts Observatory
WKU Astrophysical Observatory
Louisiana
Highland Road Park Observatory
Maine
Jordon Observatory
Starfield Observatory
Maryland
Crosby Ramsey Observatory
Hubble Space Telescope Observatory
University of Maryland Observatory
Massachusetts
Amherst Observatory
Coit Observatory
Gilliland Observatory
Harvard - Smithsonian Center for Astrophysics Observatory
Hopkins Observatory
Loomis-Michael Observatory
Oak Ridge Observatory
Whately Observatory
Whitin Observatory
UMass Dartmouth Observatory
Wheaton college Observatory
Michigan
Angell Hall Observatory
Brooks Astronomical Observatory
Calvin Observatory
Detroit Observatory
Joseph H. Rogers Observatory
MSU Observatory
Peach Mountain Observatory
Sherzer Observatory
James C. Veen Observatory
Minnesota
Goodsell Observatory
MAS Observatory
University of Minnesota campus Observatory
College of St. Catherine Observatory
Standeford Observatory
Missouri
Laws Observatory
University of Missouri-St. Louis Observatory
Washington University Observatory
Mississippi
Howell Observatory
Nebraska
Behlen Observatory
Hyde Observatory
Seven Hills Observatory
Nevada
Las Vegas - Student Observatory
New Hampshire
UNH Observatory
New Jersey
William Miller Sperry Observatory
NJAA Observatory
Serin Observatory
New Mexico
Apache Point Observatory
Frank T. Etscorn Campus Observatory
General Nathan Twining Observatory
NF/ Observatory
Sacramento Peak Observatory
UNM Campus Observatory
New York
Columbia University Observatory
Eileen Collins Observatory
Custer Institute Observatory
Darling Hill Observatory
Fuertes Observatory
Kopernik Observatory
Martz Observatory
Mees Observatory
Stony Brook Observatory
RIT Observatory
Stull Observatory
North Carolina
Dark Sky Observatory
Lucile Miller Observatory
Morehead Observatory
Three College Observatory
Nova Soctia
Burke-Gaffney Observatory
Ohio
Apollo Observatory
Brooks Observatory
Bowling Green State University Observatory
Cincinnati Observatory
Perkins Observatory
Ritter Observatory
Warner and Swasey Observatory
Warren Rupp Observatory
Ontario
David Dunlap Observatory
Hume Cronyn Observatory
Queen's University Observatory
University of Guelph Observatory
UW Observatory
York University Observatory
Oregon
James H. Karle Observatory
Pine Mtn. Observatory
Pennsylvania
Allegheny Observatory
Bucknell Observatory
Flower and Cook Observatory
Grundy Observatory
Keystone Observatory
South Mountain Observatory
Villanova Observatory
Québec
Laval Observatory
Liquid Mirror Home Page Observatory
Mont Mégantic Observatory
Rhode Island
Brown University Observatory
Saskatchewan
University of Regina Observatory
South Carolina
Roper Mountain Science Center Observatory
Melton Observatory
Tennessee
Dyer Observatory
ETSU Observatory
Texas
George Observatory
Preston F. Gott Skyview Observatory
Stephen F. Austin State University Observatory
Texas A&M teaching Observatory
McDonald Observatory
Utah
Ott Planetarium Observatory
University of Utah Observatory
West Mountain Observatory
Vermont
McGregor Observatory
Virgina
Blacksburg sidewalk Observatory
Keeble Observatory
McCormick Observatory
Stokesville Observatory
William & Mary Observatory
Washington
Goldendale Observatory
Edwin E. Ritchie Observatory
Jewett Observatory
Pettinger-Guiley Observatory
UW campus Observatory
Washington D.C.
U.S. Naval Observatory
Wisconsin
Washburn Observatory
Hobbs Observatory
UWRF Observatory
Yerkes Observatory
Wyoming
Red Buttes Observatory
