[daip] clean 3bit Ka data

[zadeh]

Hi Eric,
I may have not explained well as to what I wanted to do. I have already 
calibrated the data and have split
the single source field  that is centered on  Sgr A*. I am using Sgr A* 
to self-calibrate the file using  the
appropriate uv range. The question is whether I can self-calibrate this 
file using a spectral index for
Sgr A* over 8GHz BW? It would be nice if calib would have a parameter 
that I can include the value of the spectral index.

Thanks.
Farhad



On 4/25/14 9:19 PM, Eric Greisen wrote:
> On 4/25/2014 2:01 PM, zadeh wrote:
>> Hi Eric,
>> Hope all is well. I may be overlooking something easy but how do I 
>> include spectral index information in calib for a
>> point source that varies across the 64 IFs. I am trying to do a phase 
>> followed by an amplitude selfcal using a point source
>> model.
>> I appreciate it.
>> Farhad
>
> Do you know the flux of this source or will you be using GETJY to 
> solve for
> it after calibrating with a known calibration source (3C286 et al)? If 
> the latter
> then GETJY will use the fluxes in each IF separately and end up with 
> an SU table
> with a suitable spectrum in it.  If you then use that source as a 
> bandpass call,
> BPASS will fit a spectral index for you.  All the standard cals are 
> known complete
> with first, second and even third order spectra; index terms. Thus 
> SETJY with CALC
> will put an appropriate list of fluxes into the SU table for them (and 
> BPASS will
> recognize them, etc.)
>
> Eric Greisen
>
>
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