 Day 3 PM - The Lowell Observatory
by Roger Pittock
|  Hamburg Observatory
by Wintermeer
|  Penobscot Narrows Bridge
by Chris Bilodeau
|  My Observatory
by skyeyer
|  McDonald Observatory
by Ruth Moorhead
|
 Raccoon Ridge Bird Observatory
by RS PHOTO
|  Darklight Observatory Redux
by C. G. Anderson
|  Brera Observatory, Summer 2004
by Matt Lane
|  Wallaroo Observatory Stage II 2013
by strongmanmike2002
|  Robert Burnham Jr. Memorial
by Tom and Jennifer Polakis
|