The offices of the Observatories of the Carnegie Institution for Science are located at 813 Santa Barbara Street, Pasadena.
A common choice for transportation is to employ a shared-ride van between LAX and the airport. You can make reservations for one of the two operators:and . Both offer similar quality service for roughly $30 each way. Taxi service is roughly $90 each way. Uber and Lyft are are now permitted to pick up and drop off at LAX and will cost around $60, depending on demand.
A less expensive option is to take the FlyAway shuttle service between LAX and Union Station. From Union Station, one can then take the Metro Gold Line to the Lake Ave. station, which is a short walk from the Observatories. Total one-way cost is $11. Detailed instructions can be found here.
Maps and/or driving directions are available for the following itineraries (Note that the links connect to a map service provider):
The Observatory phone and fax numbers are (626) 577-1122 and (626) 795-8136 respectively.