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Space Telescope Imaging Spectrograph
STAN - June 2001

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| HST Spectroscopy                      STIS/GHRS/FOS |
| STScI Analysis Newsletter                June 2001  |
|                                                     |
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STIS safed due to a blown fuse in the power line 
feeding STIS


Error in "corrected times" using odelaytime with
de200.fits


+-STIS------------------------------------------------+


STIS safed due to a blown fuse in the power line
feeding STIS

As you may already have heard, the Space Telescope 
Imaging Spectrograph experienced a malfunction on 
Wednesday, May 16. The evidence available so far has 
shown that a fuse in the primary power feed to the STIS 
blew, most likely the result of a short circuit 
somewhere between the fuse and the power convertors 
within the STIS.  While we are still in the early stages 
of understanding what happened, we are hoping to fully 
restore STIS operations within the month of July.
In the meantime, we believe we have an adequate pool of 
WFPC2 programs to maintain a good observing efficiency 
with HST.



Error in "corrected times" using odelaytime with
de200.fits


The MJD in the header of de200.fits, the file which
describes the Earth's ephemeris, is off by 0.5 days.
This causes an error in the barycentric correction
to the time stamps when using "odelaytime" with the
STIS timetag data. 

We provide here the IRAF commands needed for you to
fix the de200.fits file. 


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