Current MMT, Bok, & Catalina Telescope Schedules

2019B Schedules:

Please note that during 2019B, observations at the Bok and Kuiper telescopes can be interrupted on short notice if LIGO/Virgo detects a gravitational wave event. The same is true for the Steward Observatory allocation of nights at the MMT. Observers are asked to be alert for this possibility and to cooperate fully with the observing requests made by the relevant scientific collaborations should this opportunity arise.

To apply for TBS (To Be Scheduled) nights on the Steward Observatory 90", 61", and 60" telescopes, or UAO TBS nights on the MMT, email a request and brief (1 page or less) scientific justification to Paul Smith, Steward Observatory, University of Arizona, Tucson, AZ 85721 ( 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.

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

Other Telescope Schedules: