linear artifacts in image stacks

[kpat.jhu]

Most linear artifacts should not survive to the stack stage: satellite trails should be removed by MAGIC while star glints are masked earlier. Yet some of these streak like artifacts do survive, and have similar positions in the different bands. They tend to be faint. They may be more prevalent in skycells close to the field edge, but they are also seen in skycells away from the edge. Example of these artifacts can be found at ​http://ps1sc.ifa.hawaii.edu/PS1wiki/index.php/Stack_Anomalies#Streaks

Here are positions of some of these in the MD06 skycells

#scell bands x y RA Dec comment

081 irg 5583 4175 186.933111 47.332772 edge cell
079 zi 5879 687 185.970516 47.151152 not edge
075 z 3847 2035 183.842383 47.224309 not edge
057 i 5183 879 186.870371 46.484028 edge cell
057 i 5207 671 186.871904 46.472448 edge cell
053 g 3259 3719 184.778268 46.656823 not edge