The brighter of the two is clearly nonstellar in our data. We do not have absolute photometric calibration for our data. This message is quotable in publications. Comments on the images procmos1.fits is the composite image formed by averaging forty-four 300 second dithered 0.9 meter telescope I band exposures. The instrument used was the T5HA 512x512 pixel CCD camera.
North is to the left, and East is at the top.
The effective exposure time varies greatly across the final mosaic, since we were offsetting the telescope quite a lot to minimize the effects of scattered light. This includes a record of what measurements have been reported on the mailing lists, etc. The first optical ID was by a team at the MDM observatory. They observed in I band, so their data is most directly comparable to ours. The Apache Point Observatory 3.5 meter telescope has reported an R band detection of the optical transient.