Current MMT, Bok, & Catalina Telescope Schedules


Due to the COVID-19 pandemic, all telescopes are subject to schedule changes on very short notice.

2022A: Schedules

To apply for TBS (To Be Scheduled) nights on the Steward Observatory 90", 61", and 60" 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 (i.e., identify the certified observer who will be at the telescope for the observations). 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: