Current MMT, Bok, & Kuiper Telescope Schedules

Schedules for 2023B:

Important Note: A Target-of-Opportunity program will be active all semester on all three telescopes involving a large fraction of the Steward Observatory research community. If you are contacted while observing by the collaboration requesting timely observations of a potential visible counterpart to a gravitational wave event, please consider making the observations and thereby joining the collaboration and its efforts to study merger events.

To apply for TBS (To Be Scheduled) nights on the Steward Observatory 90" and 61" telescopes, email a request and brief (1 page or less) scientific justification to Paul Smith, Steward Observatory, University of Arizona ( at least 21 days prior to the start of the TBS block of nights. Only observers who are currently certified to use the equipment requested will be considered for TBS time. Please identify the certified observer who will be at the telescope for the observations in your request. To avoid confusion and the possibility of your request being lost or forgotten, please try to submit your request no earlier that 2 weeks before the deadline.

UAO TBS time on the MMT is typically assigned after a special call for proposals made by the Steward Observatory TAC.

To apply for TBS nights on the VATT, contact Richard Boyle (

Other Telescope Schedules: