VizieR Online Data Catalog: The High Cadence Transit Survey (HiTS) (Martinez-Palomera+, 2018)

The High Cadence Transient Survey (HiTS) was designed to find and study the early phases of supernova events using the DECam imager at the 4m Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO). In this work, we analyze data from all of the 2013, 2014, and 2015 observational campaigns.

In 2013, we observed 120deg² in 40 fields during four consecutive nights, using an exposure time of 173s four times per night with a cadence of 2hr in the u band. In 2014, we observed 120deg² in 40 fields during five consecutive nights, using an exposure time of 160s four times per night with a cadence of 2hr in the g band. In 2015, we observed 150deg² in 50 fields (with an overlap of 14 fields with 2014) during six consecutive nights, using an exposure time of 86s five times per night with a cadence of 1.6hr, mostly in the g band but also including r- and i-band observations.

In 2014 and 2015, we also had imaging follow-up observations after the main run following an approximately logarithmic spacing in time. For more details of the survey, see Forster et al. (2016ApJ...832..155F).

In total, we obtained 1980107 detected sources in the u band for 2013 and 5389028 sources in the g band for 2014. For the 2015 observations, we obtained 5117233 sources in the g band, 5884126 in the r band, and 4572003 in the i band. Due to the overlap of 14 fields between the 2014 and 2015 observation campaigns, 1190008 sources have been cross-matched using a radius of 0.5" between both catalogs. The number of single-epoch detections for all three campaigns is about 100 million.

(5 data files).