[daip] MF table

[Eric Greisen]

Z.-Q. Shen writes:

 > I have a simple question regarding the contents in the MF table.
 > I see that it always lists the position and source size etc in the
 > unit of mas or degrees. Whether is it possible to see the results
 > in the unit of pixels? I did notice it also provides information in
 > pixels in the last columns (with PRTAB, not MFPRT). But seems
 > it is rounded and therefore not accurate enough compared to the
 > printout of the model fitting tasks such as JMFIT. By comparing
 > the output from JMFIT (which are in pixels) with that in the
 > corresponding MF table, some difference as large as 0.033 mas
 > was found in the position of maser spots.

The values are NOT rounded but are stored with full (single-precision
float) accuracy.  PRTAB may choose a limited format for display which
could appear to be rounded.  The formatting in PRTAB is rather tricky
- I will put it on my list to see if one could offer a greater
accuracy option.

Eric Greisen