VizieR Online Data Catalog: Light curves of the quasar He 0435-1223 (Blackburne+, 2014)

We use eight seasons of optical R-band photometry resulting from an ongoing monitoring campaign using A Novel Double Imaging Camera (DePoy et al. 2003SPIE.4841..827D) on the Small and Moderate Aperture Research Telescope System 1.3 m telescope. The magnitudes of the four images of HE 0435 have been monitored since 2003 August in the R band (rest frame 2417 Å, with a cadence varying from one day to about a week. An automated pipeline subtracts instrumental bias and flat-fields the images in the standard way. Three to six images are obtained per epoch, and we combine them to increase the signal to noise ratio and reject cosmic rays. We measure the fluxes of the quasar images and the lens galaxy using the point spread function (PSF) fitting method described in detail by Kochanek et al. (2006ApJ...640...47K).

(1 data file).