[Psrfits] STT_DATE and STT_TIME

[Scott Ransom]

Hi Dick,

Ah!  I misunderstood.  Yes, that's completely fine.

Sorry (and Cheers),

Scott

On 02/25/2014 08:15 PM, Dick.Manchester at csiro.au wrote:
> Hi Scott
>
> Thanks for your response. I'm certainly not suggesting that we get rid of
> STT_IMJD, STT_SMJD and STT_OFFS, which as you say define the precise start
> time of the obs (and are the only parameters to do so). Just STT_DATE and
> STT_TIME, which as I said, haven't been in the psrheader.fits definition
> for about seven years.
>
> Does this ease your concerns?
>
> Regards
>    Dick
>
> On 26/02/14 12:10 PM, "Scott Ransom" <sransom at nrao.edu> wrote:
>
>> It probably isn't a huge issue, but in PRESTO and psrfits_utils, we
>> count the STT_* fields as the _real_ time and compare that with
>> DATE_OBS.  So if you get rid of the STT_* fields, we will have to change
>> those bits of software.
>>
>> Scott
>>
>> On 02/25/2014 07:26 PM, Dick.Manchester at csiro.au wrote:
>>> Hi all
>>>
>>> I've come across a bit of an anomaly in the psrfits files being written
>>> by the Parkes DFBs. When we first defined the psrfits format, we had
>>> STT_DATE and STT_TIME in the main header. Then in V2.8 (Feb 2007) these
>>> were removed from the definition and DATE_OBS was added for
>>> compatibility with FITS standards. Ever since then  STT_DATE and STT_OBS
>>> have not been in the header template. However, the PDFBs have continued
>>> to write these lines in the main header (as well as DATE_OBS).
>>>
>>> I propose that we cease writing STT_DATE and STT_TIME with the Parkes
>>> DFBs. They are redundant and furthermore confusing since the the time
>>> differs slightly from that in DATE_OBS.
>>>
>>> I think this is a Parkes-only issue, but if anyone feels that this is a
>>> bad move, please let me know. I'll wait a week before asking Warwick to
>>> make the changes.
>>>
>>> Regards
>>>     Dick
>>>
>>>
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>>
>> --
>> Scott M. Ransom            Address:  NRAO
>> Phone:  (434) 296-0320               520 Edgemont Rd.
>> email:  sransom at nrao.edu             Charlottesville, VA 22903 USA
>> GPG Fingerprint: 06A9 9553 78BE 16DB 407B  FFCA 9BFA B6FF FFD3 2989
>

-- 
Scott M. Ransom            Address:  NRAO
Phone:  (434) 296-0320               520 Edgemont Rd.
email:  sransom at nrao.edu             Charlottesville, VA 22903 USA
GPG Fingerprint: 06A9 9553 78BE 16DB 407B  FFCA 9BFA B6FF FFD3 2989