| 323 | So we can compare these results with the other methods of imaging, we make some rough measurements of flux of each source. |
| 324 | According to NED, SUMSS J054003-663939 has a flux of 1.27 mJy at 843 MHz, and SUMSS J054125-664307 has a flux of 0.94 mJy |
| 325 | at 843 MHz. |
| 326 | |
| 327 | We get our fluxes using kvis, by taking the sum of the flux in 9 pixels (3x3) centred on the brightest pixel of each source. |
| 328 | This should be approximately 1 beam, so we can normalise the flux in the images. The table below shows how the flux of the |
| 329 | sources varies with frequency. Note that at a frequency of 5692 MHz the sources are right on the edge of the image, so |
| 330 | no measurements are done at frequencies higher than this. |
| 331 | |
| 332 | || Central Freq (MHz) || J054003-663939 || J054125-664307 || |
| 333 | || 4540 || 1.0 +- 0.2 || n/a || |
| 334 | || 4668 || 1.0 +- 0.2 || 1.0 +- 0.2 || |
| 335 | || 4796 || 1.1 +- 0.3 || 1.0 +- 0.3 || |
| 336 | || 4924 || 1.1 +- 0.4 || 0.8 +- 0.4 || |
| 337 | || 5052 || n/a || 1.3 +- 0.3 || |
| 338 | || 5180 || 1.0 +- 0.4 || n/a || |
| 339 | || 5308 || 1.2 +- 0.4 || 1.2 +- 0.4 || |
| 340 | || 5436 || 1.6 +- 0.3 || 1.2 +- 0.3 || |
| 341 | || 5692 || 1.2 +- 0.4 || 0.9 +- 0.4 || |
| 342 | |
| 343 | The sources don't appear to vary in flux much with frequency, at least within the errors of measurement. That would |
| 344 | suggest that using mfclean instead of clean might not produce a different result. |