| Date: | 2011-02-03 22:16 |
|---|---|
| Author: | Adam (adam.g.ginsburg@gmail.com) |
| tags: | googlepost, mapping, pipeline, deline |
| slug: | delining-maps |
First comment - delining has no effect on downsampled data. At least for the 0709 epoch, there were NO lines AT ALL in the data. From 0-5 Hz, it was just empty. So we don't have to worry about that... the problem only affects fully-sampled data. Then, onto map comparisons. Curiously, the noise levels don't drop after delining. They actually go up a bit. This may be because of the effects on PCA cleaning. However, flux levels in the sources go up by 0-10%. As usual, the change in flux changes from field to field without any obvious reason. Example 1: A pointing field. The source is ~2% brighter in the delined version, but otherwise the match between the two is nearly perfect.
Example 2: A bigger map, where the flux recovery is much greater when delining, but the background levels are also higher.
