[evlatests] RFI sweep June 2015

[rperley at nrao.edu]

A weak argument, in my opinion.

1) Astronomical observations in P-band are both infrequent and irregular. 
While there are some long integrations for a few projects, few people use
it for 'snapshot' observations.

2) The point of including it in a regular script is to allow an automated
reduction process (like what Emmanuel has set up for the other bands) to
(more or less) automatically do the processing.  You won't get this by
trying to utilize astronomical observing -- somebody will have to do
something special.

3) What's the cost of adding a P-band scan to the existing script?  3
minutes?  5, at a stretch?  And we do this, say, 3 times a year.  So we're
arguing about 15 minutes over a year?

I think there are weightier issues to discuss.

Rick

>
> it's not clear to me that we need to extend the RFI script to cover
> P-band.  every time we observe in P-band we get a good RFI "sweep"
> because we cover the entire usable band at good spectral resolution.
> the reason we make special observations at the other bands is because we
> never observe across the entire band at that resolution.  i suggest that
> we already have an overabundance of effective P-band "RFI sweep" data
> sitting in the archive.
>
> 	-bryan
>
>
> Huib Intema (NRAO) wrote on 7/8/15 12:59 :
>> Since P-band is a standard observing band, and in terms of RFI not much
>> worse than other low frequency bands, it would be useful to include it
>> in tests like this. This is relevant for both continuum observing as
>> (future) spectral line observing.
>>
>> -- Huib
>>
>>
>> On Jul 8, 2015 6:49 PM, Emmanuel Momjian <emomjian at nrao.edu> wrote:
>>>
>>> A RFI sweep spanning the frequency range 1-50 GHz, with a channel
>>> separation of 125 KHz, was carried out on June 18, 2015. The array was
>>> in A-configuration.
>>>
>>> We have the spectra at
>>> https://science.nrao.edu/facilities/vla/observing/RFI/jun-2015-A-configuration/june-2015-A-configuration
>>>
>>> For each receiver band, baseband based (1 GHz wide) png image files are
>>> posted. Also available is a PDF file linked from each band's page that
>>> has subband based (128 MHz wide) spectra for a more detailed view.
>>>
>>> The full assessment of this RFI sweep will be carried out in
>>> coordination with the RFI group.
>>>
>>> Emmanuel
>>> _______________________________________________
>>> evlatests mailing list
>>> evlatests at listmgr.nrao.edu
>>> https://listmgr.nrao.edu/mailman/listinfo/evlatests
>>
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