A 41-cm (16-inch) Boller and Chivens Cassegrain reflector originally housed at the Harvard-Smithsonian Oak Ridge Observatory in Massachusetts is available for public use at the National Air and Space Museum's Public Observatory Project on the National Mall in Washington, DC.
The facilities include a 24-inch Boller and Chivens reflector with a CCD and retrofitted with a DFM control system, a 12" Fitz/Clark refractor, a 6" Alvan Clark refractor, a Hale Spectrohelioscope, and six Meade 8" SCTs.