VizieR Online Data Catalog: Westerlund 2 UBVIc photometry (Hur+, 2015)

Deep UBVI_C observations were obtained on 2009 March 28 and 2 the 8kx8k Mosaic II CCD camera (0.268arcsec/pix) of the 4m Blanco telescope at Cerro Tololo Inter-American Observatory (CTIO). We used the SDSS u filter for U-band photometry and the Harris BVI filter set for BVIC photometry. The exposure times were 7 and 150s in I, 10 and 300s in V, 20 and 300s in B, and 100 and 1200 s in u. The average seeing was ~0.9-arcsec.

For the photometry of bright stars and for the standardization of U-B, we performed additional observations with the Y4KCam CCD camera and UBVIC filter set of the 1m telescope at CTIO on 2011 March 5. The exposure times were 5 and 180s in I, 5 and 180s in V, 10 and 300s in B, and 30 and 600s in U.

(2 data files).