[evlatests] RFI sweep June 2015

[Frazer Owen]

On 7/9/15 5:59 PM, Bryan Butler wrote:
>
> but not at the higher spectral resolution of the RFI sweep.  the 
> standard continuum at L-band is 1 MHz channel widths, if memory 
> serves, and i think it's 2 MHz at S-band and above.
>
>     -bryan
In those bands, essentially all the interference is broad-band, so I 
don't see why the resolution matters.
>
> Frazer Owen wrote on 7/9/15 17:54 :
>> On 7/9/15 5:34 PM, Bryan Butler wrote:
>>>
>>> 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
>> Doesn't the same argument apply at least to L and S-band since we
>> regularly observe the entire band in most continuum observations ?
>>
>> ---Frazer
>>>
>>>
>>> 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
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>>>>
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