Deep Lens Survey : Real-time Transient trans179 |
Time-series of a transient event. The left column represents
a sequence of images including transient trans179. The sequence
increases in time down the page. The highlighted row indicates the
object was discovered in this image. Each mosaic shows the template
image, the image with the transient, and a difference of the two. It
is possible we do not have a difference image (i.e. the template
observation), in which case we display a single observation. Each
component of the mosaic is 200 pixels (50''), and East is up and North
to the right.
The second column gives the UT date and time (and MJD) of
observation start for the images containing the transient, filter
used, and an estimate of the magnitude of the transient in this
filter, determined from the SExtractor MAG_BEST parameter and a
zero-point comparison using the USNO catalogue. While the magnitude
zero-points are accurate to only 0.1 in R and B, and 0.5 in V and z,
these magnitudes are relative to nearby stars and thus the variations
with time are more accurate. Transients also include the RA and DEC
(J2000) of each object in each observation, to 0.5'' accuracy.
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