|
NEWS
February 26 , 2008
GOES-13 Testing Resumes
SXI collection resumes for testing purposes: 2008-02-26 17:37 - 2008-02-26 22:49
Images collected during this time are for test purposes only, no scientific value.
August 24, 2007
GOES-12 Testing Resumes
SXI collection resumes for testing purposes: 2007-08-24 16:10 - 2007-09-06 20:01
Images collected during this time are for test purposes only, no scientific value.
August 15, 2007 11:38 UT
GOES-13 Returns to Storage
All data collection, inlcuding SXI, has been discontinued.
July 24, 2007 18:56 UT
GOES-13 SXI Reactivated for Testing
Images collected during this time are for test purposes only, no scientific value.
May 8, 2007 13:46 UT
GOES-12 SXI Placed in Storage Mode
SXI operations discontinued due to the ERPE anomaly.
April 12 , 2007 22:53 UT
GOES-12 X-ray Postion Electronics (ERPE) Anomaly
This anomally makes it impossible to track the Sun in the north-south direction and has impacted the mission of the XRS and SXI instruments. View the for a graphic account of this anomaly's effect on SXI.
February 21, 2007 16:00 UT
GOES-12 SXI Operations Resume in TEST MODE ONLY
Images collected during this test phase have no scientific value.
February 7, 2007 20:48 UT
GOES-12 SXI Placed in Safe Mode
Due to some uncertainty about the state of the SXI instrument, it was decided to command the GOES-12 SXI to safe mode. An engineering review will determine the next course of action.
January 11 , 2007 15:20 UT
GOES-13 SXI Placed in Storage Mode
December 5 , 2006 10:18 UT
Solar Flare Damages GOES-13 SXI
The GOES-13 SXI sustained damage to several pixels while observing an X9 flare event. Read more on the page.
October 6 , 2006 15:32 UT
GOES-12 Operations Resume in TEST MODE ONLY
Images collected during this test phase have no scientific value.
September 19, 2006 15:32UT
GOES-12 Commanded to Safe Mode
Due to yesterday's light leak anomaly, GOES-12 has been placed into safe mode as a precaution.
September 18, 2006 19:35:43UT
GOES-12 light leak anomaly
A major new off-band light leak appeared in the GOES-12 SXI images starting at 2006-09-18 19:35UT. The image taken with the PTHNB analysis filter at 19:34:02UT seems fine. The image taken at 19:35:43UT shows a major new off band light leak that has persisted since its first occurance. An image taken between these two images, at 19:35:02UT, shows a severely attenuated X-ray image of the Sun. ) The failure was probably taking place during this exposure. The most likely failure mode would be one or more segments of the entrance filters failing. Perhaps at 19:35:02UT a filter was curling over on itself cutting down the X-rays.
More details will be available on
September 15, 2006
GOES-13 Deep Cornal Images - see them on the page.
July 6, 2006 15:11:18 UTC
NOAA SWPC releases GOES-13 "First Light" image.
Only browse images will be available to the
public during the Post Launch Testing period which is scheduled
to last six months.
May 23, 2006
One of the SXI raid systems will be down for upgrades on May
24th 25th.
Data older than March 2006 will be unavailable during
this time.
February 21, 2006
The SXI data flow resumes.
February 12, 2006
The SXI experienced a high voltage system anomaly on
Sunday February 12, 2006 at approximately 1104 UT and automatically
went into safe mode. At first glance the anomaly appears to
be in the same class as the previous sets of HV problems.
SXI will remain in safe mode while SWPC and SOCC staff analyze
the telemetry available and plan our response.
January 18, 2005
Joins us for the Fourth Annual
May 1-3, 2006 in Broomfield, CO.
November 23, 2005
Network Problems made it impossible to transfer SXI
data from SWPC to NGDC at around 2012 UT.
December 1, 2005 archive data flow resumes.
November 8, 2005
SXI Operational: Image quality much better due to increased
voltage.
More details are available on
October 19, 2005
SXI Testing: Image collection resumed at a reduced
voltage and resultant reduced image quality.
More details are available on
September 11, 2005
SXI Shutdown: Just before noon UT on September 11,
2005 the SXI instrument was shutdown due to an anomalous voltage
fluctuation.
More details are available on
June 13, 2005
The GOES 12 SXI instrument and performance papers have been
published in Solar Physics.
, , et al.
,
, et
al.
February 7, 2005
MartinLuther King-storm movies added to Greatest Hits page.
SXI recorded a series of X-class flares from January 15
- 20. Two special movies were generated that illustrates this
interval of high activity. SXI performs double duty by recording
solar images and energetic ions!
January 18, 2005:
New SXI Coronal Hole Product
Beginning on Dec 15, 2004, NOAA/Space Weather Prediction Center started
routine production of a coronal hole image product. This product
is created 4 times per day (01:00, 07:00, 13:00, and 19:00
UT), for the purpose of identifying coronal holes, and they
become available at approximately 08:00, 14:00, 20:00, and
02:00 UT. Each coronal hole image is created from a sum of
12 hours of images (corrected for solar rotation), spanning
the period 6 hours prior to the nominal coronal hole image
time to 6 hours after . The coronal hole image is composited
from 3-second integration, Level-1 (calibrated) images taken
through the Thin Polyimide (PTHN) filter.
The need to create this new product was driven
by the loss of the ability to use the SXI Open Filter position
and by anomalous high voltage power supply (HVPS) behavior.
The inability to use the Open Filter was caused by the failure
of at least 1 of the 6 entrance filters that normally shield
the SXI optics from visible and ultraviolet light. The HVPS
behavior has forced imaging to be conducted at a lower than
desired gain.
The SXI Coronal Hole product is now available
online. View these data in the Browse and Movie sections.
View coverage in the Summary section, and download the data
in the Search sections.
Contact
if you have questions.
For the latest information concerning SXI, check
the maintained by the Space Weather Prediction Center. |
