VizieR Online Data Catalog: SweetSpot DR1: 74 SNe Ia in 36 nights on WIYN+WHIRC (Weyant+, 2018)

The WIYN Observatory hosts a 3.5 m telescope at Kitt Peak National Observatory (KPNO). The Ritchey-Chretien designed telescope has two Nasmyth ports, each of which can house one of five instruments currently available, including WHIRC. WHIRC is a NIR (0.9-2.5 μm) imager with a 3.3' field of view and a 0.1"/pixel scale. The instrument features a 2048x2048 Raytheon Virgo HgCdTe detector. WHIRC is equipped with JHK_s broadband filters and 10 narrowband filters-for this work, we only utilize the broadband filters. The SweetSpot data presented in this work represent the first half of the 3 yr survey plus the original pilot data from Weyant et al. (2014ApJ...784..105W). Specifically, we publish data from the 2011B, 2012A, 2012B, 2013A, and 2013B semesters. We were awarded 37 effective WIYN nights over 39 distinct calendar nights (there were 4 half nights). We obtained usable on-sky data during 29.5 effective nights across 36 distinct calendar nights (we accounted usable time in half-night chunks). We selected SNe Ia for follow-up based on the IAU Central Bureau for Astronomical Telegrams (CBET) and the Astronomers Telegram. To meet our program goals, the criteria for selection were (1) spectroscopically confirmed as Type Ia; (2) at a phase near B-band maximum; and (3) in our preferred redshift range of 0.02<z<0.08.

(5 data files).