We present the DECam Ecliptic Exploration Project (DEEP) survey strategy including observing cadence for orbit determination, exposure times, field pointings and filter choices. The overall goal of the survey is to discover and characterize the orbits of a few thousand Trans-Neptunian Objects (TNOs) using the Dark Energy Camera (DECam) on the Cerro Tololo Inter-American Observatory (CTIO) Blanco 4 meter telescope. The experiment is designed to collect a very deep series of exposures totaling a few hours on sky for each of several 2.7 square degree DECam fields-of-view to achieve a magnitude of about 26.2 using a wide VR filter which encompasses both the V and R bandpasses. In the first year, several nights were combined to achieve a sky area of about 34 square degrees. In subsequent years, the fields have been re-visited to allow TNOs to be tracked for orbit determination. When complete, DEEP will be the largest survey of the outer solar system ever undertaken in terms of newly discovered object numbers, and the most prolific at producing multi-year orbital information for the population of minor planets beyond Neptune at 30 au.
@article{arxiv.2310.19864,
title = {The DECam Ecliptic Exploration Project (DEEP) II. Observational Strategy and Design},
author = {Chadwick A. Trujillo and Cesar Fuentes and David W. Gerdes and Larissa Markwardt and Scott S. Sheppard and Ryder Strauss and Colin Orion Chandler and William J. Oldroyd and David E. Trilling and Hsing Wen Lin and Fred C. Adams and Pedro H. Bernardinelli and Matthew J. Holman and Mario Juric and Andrew McNeill and Michael Mommert and Kevin J. Napier and Matthew J. Payne and Darin Ragozzine and Andrew S. Rivkin and Hilke Schlichting and Hayden Smotherman},
journal= {arXiv preprint arXiv:2310.19864},
year = {2023}
}