Pratt closet across from Pratt Conference Room. See The Star Report , current night sky information, to plan your evening. Permission to use the telescope is given after you have completed a brief introductory lesson on how to use the facility. After you have been certified, your instructor will fill out a short half-page form which he will give to Pam Casey in the HCO Business Office. You must sign out your desired telescope time in advance of your use on a list outside of office C-24 and pick up keys to the telescope's dome before 5 PM on the day of your observations.
Keys are to be returned the next business day.
C-26 for more information. It boasts a lovely mahogany veneer, brass fixtures, a revolving observing chair mount, and an Alvan Clark finder telescope. The dome itself is 14 tons of copper sheets, and the telescope's granite pier rises from 26 feet in the bedrock up through the third floor of the Sears Tower. See the Public Affairs publication for more information about the Great Refractor . There will be extensive scaffolding and work done on the telescope this spring and summer, so access will be very limited.