[evlatests] EOP

[Jon Romney]

I don't know that they have a "user community" in the modern sense,
i.e., a big mailing list.  Once upon a time, at least, Series 7 was
just a publicly available file that we accessed automatically.  Any
notices posted in a similar manner may well not have been seen, or
accepted, by our system.

In any case, it seems to me that they should have some notification
system, and maybe they do now.  If not, perhaps we could ask for a
special arrangement in connection with our impending special deal
on observing time.

Jon


Claire Chandler wrote:
> Hi Barry,
> 
> Does the USNO notify its EOP user community when they make these format 
> changes?
> 
> Claire
> 
> On Sat, 1 Oct 2011, Barry G. Clark wrote:
> 
>> Just for the record.  About September 1, USNO slightly
>> changed the format of the Series 7 bulletin, from which
>> we get our Earth Orientation Parameters.  My program which
>> parses that got things just wrong enough that the EOP
>> were not being loaded into the database, but it wasn't
>> complaining loudly enough to be noticed.
>>
>> When EOP are loaded, I load predictions for a month in advance.
>> So October 1, 0h UT we ran out of predicts.
>>
>> I loaded a set of predicts by hand.  Monday I'll change the
>> program to handle the changed format, and to let me know if
>> it has trouble in that way again.
>>
>> The differences between the August 31 predicts for October 1
>> and the September 28 predicts for October 1 is about 10 mas
>> in all three numbers, so not a serious problem for the three
>> weeks we ran without new predicts.
>>
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