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The Palomar Transient Factory (PTF) is an optical wide-field variabilitysurvey carried out using a camera with a 7.8 square degree field of viewmounted on the 48-in Oschin Schmidt telescope at Palomar Observatory. One ofthe key goals of this survey is to conduct high-cadence monitoring of the skyin order to detect optical transient sources shortly after they occur. Here, wedescribe the real-time capabilities of the PTF and our related rapidmultiwavelength follow-up programs, extending from the radio to the gamma-raybands. We present as a case study observations of the optical transientPTF10vdl (SN 2010id), revealed to be a very young core-collapse (Type II-P)supernova having a remarkably low luminosity. Our results demonstrate that thePTF now provides for optical transients the real-time discovery andrapid-response follow-up capabilities previously reserved only for high-energytransients like gamma-ray bursts.

astrophysical journal/the astrophysical journal

Real-Time Detection and Rapid Multiwavelength Follow-up Observations of  a Highly Subluminous Type II-P Supernova from the Palomar Transient Factory  Survey