Checklist: – Please read. All visitors are expected to be aware of these requirements. Important Notes for LDT Users and Visitors – These Instrument Manual(s) give the latest instrument news and details of using the instruments. Calendars: – The only official listing of science programs and Telescope Operators. Lists observing programs, moon fraction, requested instrument setup, etc. Make sure that the filters and/or gratings you want to use are what are listed here. If not, get in touch with LDT Science Observing Schedule LDT staff at least a week before your observing night. – Google Calendar repeater of the LDT Science Observing Schedule. LDT Monthly Observer/Operator Calendar Sun/Moon Rise/Set Calendars: – From L. Wasserman to guide observing preparation. 2019, 2020, 2021, 2022, 2023 – If you are a first time observer to LDT, or you are using a new instrument, First-Time User Support contact LDT staff. – Make a reservation if you plan to use Lowell housing for in-person observing runs. Space is limited. Lodging Reservations – Review the connection information for remote observations Remote Observing – Email your operator(s) ( Contact your first night TO(s) ldtoperator at lowell dot edu) 3-4 days before your observing night. Include: Who will be observing When and how they plan to arrive (physically or virtually); Confirmation of (or updates to) the instrument setup requirements (this includes order-blocking filters for DeVeny); Whether you need time for twilight calibrations; What other observing plans the TO needs to be aware of; Any unusual observing setup needs. Target Lists / Pattern Data / Ephemerides – Prepare your target lists, pattern data files, and ephemerides before your observing night.