[evlatests] VLA switch to Rubidium

[Jon Romney]

But I thought this was all part of the plan.  No Y27 observations until the
VLA => NL => MK => AOC (repair) => VLA shuffle can be completed.

Jon


Ken Kellermann wrote:
> I think Barry is right.  I thought about this after the VLBA discussion this afternoon.  Y27 is used only for the most sensitive observations.  Even at C band long integrations needed for sensitivity will not be feasible, and the same probably applies to L band.  Also astrometry would be compromised.  It would be a waste of the VLA to use it for VLBI with only a Rb lo.  As I understood there will be a replacement in 2 to 3 weeks, so it would not make much sense to observe with a Rb based lo.
> 
>> -----Original Message-----
>> From: evlatests-bounces at nrao.edu [mailto:evlatests-bounces at nrao.edu] On Behalf Of
>> Barry G. Clark
>> Sent: Tuesday, April 16, 2013 10:06 PM
>> To: Terry Cotter
>> Cc: evlatests at aoc.nrao.edu
>> Subject: Re: [evlatests] VLA switch to Rubidium
>>
>> This kills VLBI Y27 at the VLA.
>>
>>> Hi All
>>>
>>> 	We are having Maser problems at the Mauna Kea VLBA site. We will be
>>> switching the VLA to Rubidium tomorrow by the end of the day. The VLA
>>> will be without a Maser until further notice. The maser at the VLA
>>> will
>>> be shipped to North Liberty and the maser at North Liberty will be
>>> shipped to Mauna Kea.
>>>
>>> Terry
>>> _______________________________________________
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>>>
>>
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