Open house is scheduled for Friday, Nov. 27th at approximately 7:30PM, after the Space Telescope Science Institute talk is over, unless a weather cancellation is posted below. Directions to the Homewood Campus can be found here.  The observatory is located on the roof of the Bloomberg building, which is #41 on this map.  Parking is available in the upper level of the lot adjacent to Bloomberg (lower level on Tuesday nights).  The lot is marked as #66 on the campus map.  The upper level is reached by driving towards Bldg. #40.  The gates on the top-level parking lot will be raised.  There is no fee for parking in the upper lot. MDSG Observatory page Space Telescope Public Talk Page