Suggested future work

The procedure described in the previous section to make an image-plane model of a moderately resolved source such that $V^{Cor}_{ij}/V^{model}_{ij} \sim 1.0$ can be used to increase the effective uv-range of a number of calibraters in the VLA Calibrater list. The procedure can be summarized as:

1. Flag the data for dead/bad antennas and RFI (if any).

2. Set the uv-range to that given in the VLA Calibrater list.

3. Select a set of antennas, all of which satisfy at least one amplitude closure relation within the prescribed uv-range.

4. Self-calibrate this data using the uv-range. This will provide the complex antenna based gains ($g_i^\circ$) for primary phase calibration for most of the antennas included in this uv-range.

5. Calibrate the data using $g_i^\circ$, and make a deconvolved image ($I^M$) of the source using all the baselines which were calibrated in the previous step.

6. Decide the set of antennas to be used in the next step and the uv-range increment $\Delta B$ (see Section 3.3.1).

7. Use $I^M$ as the model image and increase the uv-range by $\Delta B$. Goto step 3.

8. Iterate till the uv-range includes the entire array and the uv-plot is constant for the entire uv-range ( $V_{ij}^{Cor}/V_{ij}^{model} \sim 1.0$).