RE: Notes on Disk Set 19

[Tom Droege <tdroege@veriomail.com>]

Rob, Mike, and all,

Rob, I think that I never got around to using your latest version.  The 
version I am using is dated 4-16-01 5.08PM.

OK, I just looked, and it is my error.   At least I compute the file 
label.  This is done in my subroutine "TimeStuff".  It is not clear why the 
two entries are different.  I think someone who understands this should 
look at my code and fix it.  There is now good reason to just number the 
files V1, V2, ... I1, I2, ... for each run.

This would be greatly appreciated.  From time to time someone asks what 
they can do to help.  Well, look at this code and find why I am off by one 
day.  It is a question of which entry is off by a day.  This for the time 
series data to be useful later.

I could easily be a day off or an hour off or what not.

I am counting on those that write the final operating code to get this 
stuff right.  I have just put something together so that I can test taking 
data.

Mike, if you understand this, you might look at the code and see what is 
wrong.  Qbx and the code that took the data is in the DS191 
directory.  "QBX model" will bring up the code in an easy form to 
examine.  The data was actually taken with flat.bat.

Tom Droege



At 06:16 PM 10/15/01 -0600, you wrote:

>Hey Tom,
>
>My current version of downfits takes file names on the command line.  It
>does not create file names itself.  I thought that all version had done
>this, but I may be wrong.  Can you tell me what you are passing as the
>command line to downfits?
>
>There was/is a problem with CFITSIO DLL's, in that the DATE-OBS time was off
>by 1 hour (I'm sure related to DST garbage), but that was since removed, and
>the DATE-OBS is grabbed from the plate files...
>
>I think Michael is using a Linux compiled version of downfits.  If so, can
>you (Michael), go into the tom.cpp file and uncomment the fits_write_date
>function call to determine if this is a Windows only thing?
>
>Later,
>Rob
>
> > -----Original Message-----
> > From: Tom Droege [mailto:tdroege@veriomail.com]
> > Sent: Monday, October 15, 2001 5:45 PM
> > To: Michael Sallman; tass@listserv.wwa.com
> > Subject: Re: Notes on Disk Set 19
> >
> >
> > Michael and all,
> >
> > The DATE-OBS should be the correct one.  The file name is
> > generated by
> > Rob's call to cfitsio which seems to give the wrong file
> > date.  No one has
> > yet tracked this down.  There was some discussion on the list.
> >
> > Kepp plugging away.
> >
> > Tom
> >
> > At 04:40 PM 10/14/01 -0500, you wrote:
> > >Stupendous Man wrote:
> > > >
> > > >   I'm running through the data in Disk Set 19, and thought I'd
> > > > share a few discoveries with others.
> > > >
> > >
> > >I have also been trying to run the data set through
> > Michael's pipeline.
> > >
> > >I notice that there is a 1 day discrepancy between the name of each
> > >image file and the date/time in the FITS header for that image.
> > >As an example, image hira2157552.fits has in its header:
> > >
> > >DATE-OBS= '2001-09-06T01:14:44' / UT date-time of exposure start
> > >
> > >which converts to JD 24522158.552 (so filename would be
> > >hira2158552.fits).
> > >
> > >Sorry if this has already been addressed, I don't recall seeing it
> > >mentioned before.
> > >
> > >Will keep plugging away at the data as time allows.
> > >
> > >Mike
> >
> >