The Cook Memorial Telescope is now on loan to the National Air and Space Museum for use in the observatory.

There are also other instruments for viewing the hydrogen-alpha (red) and calcium-K (purple) light emitted by the chromosphere.

The observatory is located on the National Air and Space Museum's east terrace and is open to the public Wednesdays through Sundays from noon to 3 P.M. and one night a month.

She left academia after marrying Otto Haas, a Philadelphia businessman, but remained an active citizen scientist and leading member of the American Association of Variable Star Observers.

[2] In 2024 Phoebe Waterman Haas Public Observatory is undergoing a period of revitalization and transformation, it is planned to reopen in 2026.