tag:blogger.com,1999:blog-63695941389805829942024-02-07T14:04:54.778-05:00SDO is GOThis is the Solar Dynamics Observatory Mission blog. It will consist of mission status, news, and event updates.Kevinhttp://www.blogger.com/profile/16479620366654056823noreply@blogger.comBlogger774125tag:blogger.com,1999:blog-6369594138980582994.post-40529832957689597352024-02-05T14:33:00.000-05:002024-02-05T14:33:41.128-05:0009 April 2024 Lunar Transit (08 April for North America)On April 8, 2024, a large swath of North America will enjoy a Total Solar Eclipse from Mazatlán up through Texas to Maine and the Maritime Provinces of Canada. Although those along the path of totality will enjoy a beautiful view of the solar corona, SDO will only see a short, almost glancing transit of the Moon across the Sun long after the TSE ends. The SDO transit starts at 03:29 UTC on 9 Feb 2024 (10:29 pm EDT on 8 Feb 2024), 7 hours after the TSE ends on the ground.
<P>
Here is a movie from the SDO Flight Dynamics Team showing the transit.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dwelvl0043_MDrIuN9NSieIGbM6MVv01tIfbUSH6iuah1c-Z9VlJEhBiDHO4tFAV1OMaf0tnN8BSyn3F-wlWg' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<P>
The transit will only cover 5% of the solar disk.
<P>
If you live in Mexico, USA, or Eastern Canada, please go watch the Total Solar Eclispe. They are a wonderful way to see the Sun in a different light.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-82044182294359791142024-01-24T14:14:00.002-05:002024-01-24T14:14:59.067-05:00Station Keeping maneuver #28 todaySDO will execute Station Keeping maneuver #28 today from 2315-2400 UTC (6:15-7:00 pm ET). During a maneuver SDO science data may be missing or blurred. These maneuvers are needed to maintain SDO's assigned position as it passes through the geostationary orbit belt.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-12415865001629815412023-06-08T15:58:00.000-04:002023-06-08T15:58:05.868-04:0018 Jun 2023 Lunar TransitBetween 0557--0612 UTC (01:57--02:12 ET) on 18 Jun 2023, SDO is experience a brief lunar transit. The Moon will cover about 3% of the Sun, but because it will pass over the top diode SDO will leave science mode during the transit.
<P>
Here is the Flight Ops Team movie of the transit
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dxUebP-JVDsRz6nVR3s_lTElyCfzUqwM4d5d_HW9yeUCzjqDg6d90gsKSDfQX41G9UfEEeT4HN4NrqCPhsFhw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<P>
I hope everyone is enjoying SDO's view of the Sun as we near the maximum of Solar Cycle 25!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-16644278432959377662023-06-08T15:51:00.004-04:002023-06-08T15:51:31.016-04:0020 May 2023 Lunar Transit and the Long-term Predicts for the 3rd Quarter of 2023The 2023-094 FDS Quarterly (Long-Set) Predicts have been delivered. They include events through 05 Nov 2023. The highlights are:
<UL>
<LI>
20 May 2023, 0222--0306 UTC (22:22--23:06 ET) - LunTran_2023140_3dc_82pshdw
<LI>
18 Jun 2023, 0557--0612 UTC (01:57--02:12 ET) - LunTran_2023169_1dc_3pshdw
<LI>
21 Jun 2023, TBD - Tentative date for Momentum Management Maneuver #47
<LI>
04 Jul 2023, 1148 UTC (07:48 ET) - Handover Season Starts with First Handover (-Z HGA Active Prior)
<LI>
20 Jul 2023, 0725 UTC (03:25 ET) - Eclipse Season Starts
<LI>
26 Jul 2023, TBD - Tentative Date for Station Keeping Maneuver #27
<LI>
04 Aug 2023, 1913--1919 UTC (15:13--1519 ET) - Solar RFI
<LI>
05 Aug 2023, 1910--1918 UTC (15:10--1518 ET) - Solar RFI
<LI>
06 Aug 2023, 1909--1916 UTC (15:09--15:19 ET) - Solar RFI
<LI>
15 Aug 2023, 0248 UTC (22:48 ET) - Handover Season Ends with Completion of Last Handover (+Z HGA Active After)
<LI>
16 Aug 2023, 0659 UTC (02:59 ET) - Eclipse Season Ends
<LI>
05 Nov 2023, 0200 ET - Daylight Saving Time Ends, GSFC Local Time now UTC-5:00
</UL>
(All dates and times in parentheses are GSFC Local time.)
<P>
Here is a movie of the predicted 20 May 2023 lunar transit:
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dzF6GCczKxjNsIWoeIistwBr3UI__lSmny6u0n-tBJe0b71as1Uw5SzI9dCxlyrRCbrIaHsyFuVQVWlkumfNw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
And here is what a daily movie shows for that date:
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='320' src='https://www.blogger.com/video.g?token=AD6v5dyls2Nnoi_21II9dMYEbPVXwILdgNnvjHf1UeqSjB7pDIrX4Fb4_nEkKv6VCBtih8vvny4UgXyB2ogkUubbbw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-59964816726699358292023-05-02T17:30:00.001-04:002023-05-02T17:31:06.705-04:00EVE Calibration Rocket, May 3, 2023, Streaming on NASA TVAll is Go for the launch of the SDO EVE calibration rocket (NASA #36.389) on May 3. The EVE Team has approvals from NASA, WSMR (White Sands Missile Range, where the flight will occur), and the Navy (who run the launch pad) for a launch window of 18:10-18:40 UTC (2:30 PM - 2:40 PM ET). The weather forecast for White Sands, NM, is also looking good.
<P>
<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgq9mSq7gXJpyv_CXdpILQfyDBXI3bXUZZa1t78hDcqqxYx9cb5ynw5YmlJ5wrKQ51ykVfIpdKqH2hT0QD4TZPmANHtCT-SAya-Wl_ENXk5XTqEp7v_a127yrjrVAekiIBCmB6aHqaQracGr2qbZ9ULEVA2MZGsiQSLZI926S8a_N1TQadptI_Ffb-ew/s720/4W5W002911.jpg" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" height="400" data-original-height="720" data-original-width="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgq9mSq7gXJpyv_CXdpILQfyDBXI3bXUZZa1t78hDcqqxYx9cb5ynw5YmlJ5wrKQ51ykVfIpdKqH2hT0QD4TZPmANHtCT-SAya-Wl_ENXk5XTqEp7v_a127yrjrVAekiIBCmB6aHqaQracGr2qbZ9ULEVA2MZGsiQSLZI926S8a_N1TQadptI_Ffb-ew/s400/4W5W002911.jpg"/></a></div>
The EVE sounding rocket used to calibrate the SDO EVE instrument launches from the White Sands Missile Range in New Mexico in 2015. (Image courtesy LASP.)
<P>
NASA TV will stream the launch starting at 11:45 AM MDT (1:45 pm ET) at the link
<a href="https://video.ibm.com/channel/nasa-tv-wallops" target="_blank">https://video.ibm.com/channel/nasa-tv-wallops</a>.
<P>
Enjoy!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-61892731662090395322023-04-26T10:02:00.000-04:002023-04-26T10:02:17.368-04:00Calibration Activities Today 1700-2030 UTCThe SDO Team will power cycle Inertial Reference Unit #2 (IRU-2) today. These cold starts are used to maintain the IRUs and ensure their longevity. The spacecraft will execute a series of off-point maneuvers after the power cycle. These will be done in all three axes, so images will appear to move left to right, nod up and down, and roll to and fro. Once the testing and calibrations are over SDO will return to routine science data collection.
<P>
During the calibration activity science data may be missing, blurred, or shifted.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-44161918083337972112023-03-22T10:09:00.004-04:002023-03-22T10:09:47.368-04:00Website Status Update - Data Outage<span style="caret-color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14.6667px; text-size-adjust: auto;">Power is out at the Stanford data site due to the current atmospheric river. Power is being restored to the university and the JSOC should be back in operations soon. The data is stored at the SDO ground station and will be available once power is restored.</span><!--Make sure you label your posts with key words.-->Kevinhttp://www.blogger.com/profile/16479620366654056823noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-84069935475354677252023-02-12T15:05:00.004-05:002023-02-12T15:06:47.971-05:00Happy Launch Anniversary to SDO!SDO was launched into orbit 13 years ago yesterday, at 10:23 am ET on 11 Feb 2010. Thirteen years and millions of observations later, SDO is still producing excellent solar data. It is hard to pick out a favorite sequence of SDO data. But the Sun did provide us with a nice filament eruption a few days ago as an early anniversary present. If you look in the northern polar regions of this combined AIA 211 Å (red), 193 Å (green), and 171 Å (blue) video, you can see the dark filament rising up and breaking apart. It appears to include one of the magnetic vortices we saw in the last Solar Cycle.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dwDwZbChwWi6yI5H9qEf0purHUAv-ieAtMWSxb5Qa5oUWSaN6Lc0iv9NBuQEcyAC5zqaojh9S1sadPUwg42CA' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<P>
These polar filaments are a key part of removing the previous cycle's magnetic field from the poles of the Sun. As Solar Cycle 25 field erupts near the equator, some of it moves towards the poles where it meets the last remaining magnetic field of Solar Cycle 24. The fields tend to have opposite directions and they form a filament where they meet. This filament will circle the pole. Some of the oddity in this movie is seeing the plasma move around the pole in both directions.
<P>
The Sun will continue to surprise us, in SDO's 13th year and probably for many years to come.
<P>
I would like to thank the people who built and launched SDO, it has been an amazing observatory. I congratulate the people who run SDO on keeping this fantastic tool on station and performing great!
<P>
SDO is GO!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-53168259542112751172023-01-05T14:54:00.000-05:002023-01-05T14:54:38.533-05:00Perihelion Interrupts Instrument CalibrationsSDO executed the EVE FOV and HMI/AIA Flatfield instrument calibration maneuvers yesterday, 04 Jan 2023, at 1415 UTC (9:15 am ET) and 1730 UTC (12:30 pm ET), respectively. During these maneuvers, at 1617 UTC (11:17 am ET) the Earth reached perihelion, the point in its orbit when it is closest to the Sun. Here is a picture comparing AIA 1600 images at 1649 UTC (10:49 am ET, right) and 04 Jul 2022, 0711 UTC (03:11 am ET, during DST, on left) when the Earth is farthest from the Sun.
<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEguElbG9ykjQiUS__ZLLftrrz8I5GtamYZsZlJFCcp7nslTLNmFMHDlN9NoWY23emC2bTYJV1GHjmG8rIBvazczeWQVbYCFMGU4it7-EoFsMdEKoUQ9Gl48goRJKOfXqc-v4s32d1JmYKWVc8Swjbb3iGoPUjL08eYNSuIAm3sbykW6E0ia13YtUqHbMg/s3063/Peri_apo_1600.png" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="1604" data-original-width="3063" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEguElbG9ykjQiUS__ZLLftrrz8I5GtamYZsZlJFCcp7nslTLNmFMHDlN9NoWY23emC2bTYJV1GHjmG8rIBvazczeWQVbYCFMGU4it7-EoFsMdEKoUQ9Gl48goRJKOfXqc-v4s32d1JmYKWVc8Swjbb3iGoPUjL08eYNSuIAm3sbykW6E0ia13YtUqHbMg/s400/Peri_apo_1600.png"/></a></div>
<P>
The blues lines are drawn to touch the poles of the Sun in the image from last July. You can see that the Sun appears to be a bit larger near perihelion than at apohelion. The SDO telescopes cannot change the size of their images and HMI in particular had to allow for this change in apparent size when designing the optics.
<P>
Happy Perihelion 2023!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-57060075473611476012023-01-03T13:11:00.003-05:002023-01-03T13:11:38.101-05:00Data Outage is Being FixedWe apologize for the lack of SDO data over the long weekend. A major software update was done last week and the system was released to production too early. The issues are being fixed, partial connectivity has been restored, and full service should be restored soon.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-83061877222381526752022-10-05T10:38:00.002-04:002022-10-05T10:38:28.262-04:00Fall 2022 Calibration Maneuvers BeginToday SDO will execute the EVE Field of View (at 1315 UTC, 9:15 am ET) and the HMI/AIA Flatfield (at 1630 UTC, 12:30 pm ET) calibration maneuvers. During these maneuvers SDO science data may be missing or blurred.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-56915264016462777692022-08-25T11:25:00.002-04:002022-08-25T11:25:51.888-04:00Comet Off-Point Test TodayAlthough a comet hasn't been seen in the SDO field of view since 2012, we are always waiting for the next comet to appear. Today we will run our comet off-point test to make sure we are ready for the rapid response that is necessary. Starting at 1800 UTC (2:00 pm ET) SDO will point up and to the left of the Sun's center for 15 minutes. We will then return to solar-center pointing and hold in inertial mode for 15 minutes, allowing the attitude control engineers to run further tests. By 1850 UTC (2:50 pm ET) SDO will return to normal science mode.
<p>
This test assures that the SDO Team will be able to point SDO at an incoming comet with a 24-48 hour notice from the Sungrazer Comet Watchers.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-34975178027631984922022-08-04T12:09:00.004-04:002022-08-04T12:10:43.213-04:00Major Outage -- The fiber optic link between White Sands Ground Station and the JSOC is down<p>Major Outage -- <span style="caret-color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14.6667px; text-size-adjust: auto;">The fiber optic link between White Sands Ground Station and the JSOC in California is down. Repairs are underway.</span></p><p>Time Down: 08/03/2022 14:57 CT (08/03/2022 19:57 GMT)<br />Time Reported: 08/03/2022 15:10 CT (08/03/2022 20:10 GMT)</p><p>Reason for outage:<br />WSC/STA Links 1000/1001 down 03/1957:08Z. Carrier notified and they are experiencing an outage on an OC-192 between Sacramento and Burbank, Ca. The technicians in Sacramento have identified/found a bad timing and control module with no spares in inventory. They will ordered one from the vendor and expect it's arrival sometime today. (SR)<br /><br />Outage Impact: SDO data</p><div><span style="background-color: black; caret-color: rgb(255, 255, 255); color: white; font-family: Calibri; font-weight: 700; text-align: center; text-size-adjust: auto;"><span style="text-size-adjust: auto;"></span></span></div>Kevinhttp://www.blogger.com/profile/16479620366654056823noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-65104644974729811982022-07-28T10:36:00.000-04:002022-07-28T10:36:28.457-04:00SDO Timeline Through February 2023Here are the highlights of the SDO FDS Quarterly (Long Set) Predicts:
<UL>
<LI>
2022/206 @ 0716 UTC (07/25 @ 03:16 am ET) - July-August 2022 Eclipse Season Starts
</LI>
<LI>
2022/208 @ 2240 UTC (07/27 @ 6:40 pm ET) - Station Keeping Manuever #25
</LI>
<LI>
2022/231 @ 0709 UTC (08/19 @ 3:09 am ET) - Eclipse Season Ends
</LI>
<LI>
2022/310 @ 2:00 am ET (11/06) - Daylight Savings Time Ends - GSFC Local Time now UTC -5:00
</LI>
<LI>
2022/341 @ TBD (12/07 @ TBD) - Momemtum Management Maneuver #45 (Tentative Date)
</LI>
<LI>
2023/020 @ 0722 UTC (01/20/2023 @ 2:22 am ET) - January-February 2023 Eclipse Season Starts
</LI>
<LI>
2023/021 @ 0440 UTC (01/20/2023 @ 11:40 am ET) - Handover Season Starts with First Handover
</LI>
<LI>
2023/032 @ TBD (02/01/2023 @ TBD) - Station Keeping Maneuver #26 (Tentative Date)
</LI>
<LI>
2023/044 @ 0722 UTC (02/13/2023 @ 2:22 am ET) - Eclipse Season Ends
</UL>
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-44761521428507859242022-07-27T15:10:00.004-04:002022-07-27T15:10:54.303-04:00Station Keeping maneuver #25 is TodaySDO will execute Station Keeping maneuver #25 today from 2220-2300 UTC (6:20-7:00 pm ET). During a maneuver SDO science data may be missing or blurred. These maneuvers are needed to maintain SDO's assigned position as it passes through the geostationary orbit belt.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-20785538593447687402022-07-05T18:04:00.002-04:002022-07-05T18:04:19.699-04:00July 2022 Instrument Calibration ManeuversThe July 2022 Instrument Calibration maneuvers are starting. During an instrument calibration maneuver SDO science data may be missing, blurry, or misaligned.
<UL>
<LI>
06 Jul 2022: EVE FOV and HMI/AIA Flatfield Calibrations (EVE FOV @ 1315 UTC (9:15-11:50 am ET); HMI/AIA Flatfield @ 1630-1910 UTC (12:30-3:10 pm ET))
</LI>
<LI>
20 Jul 2022: EVE Cruciform, 1400–1852 UTC (10:00 am - 2:52 pm ET)
</LI>
</UL>
The next HMI Roll maneuver has not yet been scheduled.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-55129174053956098742022-06-28T15:38:00.000-04:002022-06-28T15:38:26.817-04:00JSOC Power has been RestoredPower has been restored to Stanford University and all of the components of the JSOC have been turned on. Near-realtime data has been flowing for a day. The science data pipeline will beginning serving data as soon as possible.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-76257280260685238872022-06-28T13:38:00.000-04:002022-06-28T13:38:29.484-04:00Lunar Transit on June 29, 2022Tomorrow, June 29, 2022, the Moon will transit the Sun between 0519 and 0554 UTC (01:19 and 1:54 am ET). At its peak the Moon will cover about 67% of the Sun. SDO science data will be unavailable during the transit.
<P>
Here's a movie of the transit from the SDO Flight Operations Team.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dwWJiWfMxhlTGTmTOw_U5DmNuMaeWrlAjJuHAIRcPvR3-B4OvUUSpVOFC6SG332I8thKAd0zxYKCYYhfN1ulQ' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<p>
This transit occurs while SDO is in the midnight sector of its orbit. That means the motions of the Moon and SDO combine to make this a short transit, lasting about 35 minutes.
<P>
Enjoy!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-11940952165447401232022-06-23T11:58:00.002-04:002022-06-23T11:58:11.620-04:00Momentum Management Maneuver (Delta-H) #44 YesterdaySDO executed Momentum Management Maneuver (Delta-H) #44 yesterday. Between 1945 UTC (3:30 pm ET) and 2015 UTC (4:15 pm) on 22-Jun-2022 SDO science data may be missing or blurred.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-31350297601719569032022-06-23T09:57:00.000-04:002022-06-23T09:57:26.237-04:00Power Still Out at StanfordThe power is still out at the Stanford University building that houses the AIA/HMI JSOC. AIA and HMI data will be unavailable until power is restored. This outage is apparently due to a wildfire near Palo Alo, CA, that brought down the main power lines into the area. The downlinked data is being stored at SDO's White Sands ground station. Once power is restored that data will be transmitted to the JSOC and made available for study.<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWDY3YAaRKOBM_rKe1_l7AFu4omXOwynnE6e--9_HJWpp448JSfcl2UUEpfBaGKO2vLB33dtFkUEN8UYntXpqbfZf0nQPy0c2gJdPl6pqRC5n6eYTWOXP4i-A7jRSogElhnqMYSh3eDeEU_Ld6zzy1_bT4wqZFWqOlYeWNYwdP_4M7O3G70SUO_1_CAg/s789/Images_Unavailable.png" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="751" data-original-width="789" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWDY3YAaRKOBM_rKe1_l7AFu4omXOwynnE6e--9_HJWpp448JSfcl2UUEpfBaGKO2vLB33dtFkUEN8UYntXpqbfZf0nQPy0c2gJdPl6pqRC5n6eYTWOXP4i-A7jRSogElhnqMYSh3eDeEU_Ld6zzy1_bT4wqZFWqOlYeWNYwdP_4M7O3G70SUO_1_CAg/s400/Images_Unavailable.png"/></a></div>
EVE data is still available at the <a href="https://lasp.colorado.edu/eve/data_access/">EVE SOC</a>.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-2866792317921642162022-06-22T09:40:00.003-04:002022-06-22T09:40:59.664-04:00Data Outage<span style="caret-color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14.6667px; text-size-adjust: auto;">HMI and AIA data are temporarily unavailable. A widespread power outage has closed the Stanford campus that hosts the SDO Data Center.</span><!--Make sure you label your posts with key words.-->Kevinhttp://www.blogger.com/profile/16479620366654056823noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-8147559576473445012022-05-11T13:05:00.001-04:002022-05-13T11:53:21.313-04:00HMI as a Hi-Speed Coronagraph (updated)The time in the header of the HMI movie turns out to be off by 3 hours (the movie runs from 1320-1342 UTC). Once I heard that, it was back to Helioviewer (<a href="https://www.Helioviewer.org">https://www.Helioviewer.org</a>, which now redirects to a GSFC website) to produce an AIA 221 Å movie. I selected the area around the flare and made a movie that covers between 1300 and 1400 UTC. Now there is good agreement in the presence and shape of the filament, even the change from upright oval to a more horizontal appearance. You can compare the movies yourself to see how well the HMI filament tracks the AIA 221 Å filament. The post-flare arcade is much easier to see in this movie.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dy1H9dJIT2ShXYyKUpgVIUdZ3lXGNHus2W_ln8BKO3MUwpNdQtQh5ShAJo3li0KaCGurCsDS8tQxYvncKITpA' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<P>
I also looked at the AIA 1600 Å passband and see a beautiful filament at 13:23:50 UTC. The filament is bright because it reflects light from the Sun towards SDO and emits its own light. Use Helioviewer to create your own movie of this passband to see the rest of the flare and filament liftoff.
<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmF43mvimEuVmgM892WT-A2lhc6nJstACINDlF7KUWhWxr4ljo01iNG0zCrXdvtrxr6IQ6gAXCrnmgWnatrxOL_nXE8dblwIPUKF2dF-EHfk4jBkIP5yrN8tJc137W-hJCMySUSL7RwdEWUKeFpMt8Znd2yQ-X3RrrYC3zXPBZPXlCs2mKDEQkNnY8AA/s1530/2022_05_03_13_24_00_AIA_1600.png" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="879" data-original-width="1530" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmF43mvimEuVmgM892WT-A2lhc6nJstACINDlF7KUWhWxr4ljo01iNG0zCrXdvtrxr6IQ6gAXCrnmgWnatrxOL_nXE8dblwIPUKF2dF-EHfk4jBkIP5yrN8tJc137W-hJCMySUSL7RwdEWUKeFpMt8Znd2yQ-X3RrrYC3zXPBZPXlCs2mKDEQkNnY8AA/s400/2022_05_03_13_24_00_AIA_1600.png"/></a></div>
<P>
Solar Cycle 25 is getting interesting!
<P>
A magnetic complex, destined to become Active Region 3006, was rotating into view on May 3, 2022, when it was the site of an X1.1 flare at 1309 UTC. Three hours later HMI observed a filament liftoff.
<P>
Junwei Zhao used all of the HMI frames to produce this movie of a filament liftoff and other evolution of the solar atmopshere above the nascent AR 3006.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dzlE5sLO0JEkJLbQLhuxwZQjXOv-BoFB9Rs3KPkBGdwX1c6UgifHGddOPGy_mqT0oiTUPaIU8pWjg1dJ6FpXw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
This movie was made by using all of HMI’s 6 line-position intensities — not just the continuum images. Thus, this movie has an amazing 7.5-sec cadence, showing many more details than a 45-sec cadence movie. Because the data is from above the limb, Fe I 6173 is no longer an absorption line, we mostly see how it scatters light from the solar surface towards SDO. (The same is true when you look at filaments in H<i>α</i>. The filaments are dark against the disk but are seen as bright prominences above the limb.) In this movie the on-disk signal is completely saturated so that the off-limb signal is more easily seen. This movie is also showing a reverse image of the off-limb pixels. The dark material would be bright in the original images. The images are 150" squares. The Sun is 1904" across on May 3, so the area seen in the movie is only 0.6% of the Sun's area.
<P>
The movie clearly shows material being ejected from the Sun. Some material falls back towards the surface, but then stopped falling and was held there for a few minutes before the light faded away.
<P>
Another interesting thing is that a post-flare arcade formed right beside the limb. Although it is small and remains close to the limb, it was undoubtedly there for a few minutes.
<P>
This is the fourth off-limb flare captured by the HMI. The first three resulted in quite a few publications in studying the polarization of the off-limb flare loops, the emission mechanisms of the off-limb white flares, and studies coupling the white-light and UV/EUV/X-ray observations. This high-cadence movie shows that we still haven't figured out all of the ways SDO data can be used to study the Sun.
<P>
<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsIIWVOjC6gysFM-z7P2Lbqd7fMGnRsDpHNKJhoh4DdulvdyI7KYaIgogyBHM6tetv4y849rjsagwjMrtgn8_7XnGla1stioH9m6gJGgz_-bGlwPiRtltXg_f73pKptAPEZonF30KZ-OL6NnqYhx1a1kNd0ktG0AWMzmulqxTCYn5Fo3BLVLweYKAsSw/s1530/2022_05_03_16_19_25_AIA_304.png" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="320" data-original-height="879" data-original-width="1530" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsIIWVOjC6gysFM-z7P2Lbqd7fMGnRsDpHNKJhoh4DdulvdyI7KYaIgogyBHM6tetv4y849rjsagwjMrtgn8_7XnGla1stioH9m6gJGgz_-bGlwPiRtltXg_f73pKptAPEZonF30KZ-OL6NnqYhx1a1kNd0ktG0AWMzmulqxTCYn5Fo3BLVLweYKAsSw/s320/2022_05_03_16_19_25_AIA_304.png"/></a></div>
<del>You are right if you are thinking HMI was lucky. Here is an AIA 304 image of the same region from 1619 UTC of May 3, 2022. The large number of coronal loops makes it very difficult to track the filament seen in the HMI movie.</del>The AIA 304 Å images at the corrected times are saturated and need more analysis to see the filament.
<P>
Thanks to Todd Hoeksema, Sushant Mahajan, and Junwei Zhao, all members of the HMI Team at Stanford, for discovering and providing the movies of this limb flare and filament liftoff.
<P>
I hope you enjoy this movie.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-60451694171932531512022-04-07T11:01:00.001-04:002022-04-14T09:44:37.765-04:00April Calibration ManeuversSDO will execute several calibration maneuvers during April.
<UL>
<LI>
April 13, 2022: EVE Field of View (1415-1700 UTC, 10:15 am - 1:00 pm ET) and HMI/AIA Flatfield maneuvers (1730-2010 UTC, 1:30-4:10 pm ET)
<LI>
April 20, 2022: HMI Roll Maneuver (1400-2040 UTC, 10:00 am - 4:40 pm ET)
<LI>
April 27, 2022: EVE Cruciform (1300-1755 UTC, 9:00 am - 1:55 pm ET)
</UL>
Science data may be blurry or missing during each calibration maneuver.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-28291843873691205842022-04-06T15:06:00.000-04:002022-04-06T15:06:09.960-04:00Momentum Management Maneuver (Delta-H) #43 TodaySDO will execute Momentum Management Maneuver (Delta-H) #43 today. Between 1830 UTC (2:30 pm ET) and 1915 UTC (3:15 pm) SDO science data may be missing or blurred.
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.comtag:blogger.com,1999:blog-6369594138980582994.post-17724862244255110162022-03-31T17:42:00.000-04:002022-03-31T17:42:10.192-04:00An X1.3 Flare and a Cool View of Plasma Leaving the SunOn March 30, 2022, active region 12975 was the site of an X1.3 flare. Here is the daily movie in AIA 171 from that day. AR 12975 is in the upper right quadrant to the right of the far more impressive looking coronal loops above AR 12976.
<div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='400' height='322' src='https://www.blogger.com/video.g?token=AD6v5dxWiLTXqx5PTKAvLZHz0Zck54n3wIL_ocqv4qwn7a7AHFTPZwdBY324tjglOTBry3UG4kx_0R5yR3kGWF8sPQ' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<p>
During the day we adjusted the fine guidance telescope, which causes the images to bounce a little bit. The flare starts at 17:26 UTC and ends at 17:46 UTC. What I found cool about this flare was the lass of plasma just south of the flare site. Here are two stills from the movie.
<div class="separator" style="clear: both;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBNEIRxA2Tz0hYCxLcxSOPfiXQ7mR95fHI43BsAosup1xQxIz0Ht-5bHwHY_PovbRJRK5fYqNlirXu4a3-iWRrTtuo5vifhxaenjiMzjMlnOgjUoy3d536Bfi6WXw9uTsV4nO-OZ5_Em3ZLByRA5frDUzcFY-KRtzyWH-bZzFYfYUaoWfoj4Rx2ZmQ2Q/s998/Presentation1.png" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="400" data-original-height="513" data-original-width="998" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBNEIRxA2Tz0hYCxLcxSOPfiXQ7mR95fHI43BsAosup1xQxIz0Ht-5bHwHY_PovbRJRK5fYqNlirXu4a3-iWRrTtuo5vifhxaenjiMzjMlnOgjUoy3d536Bfi6WXw9uTsV4nO-OZ5_Em3ZLByRA5frDUzcFY-KRtzyWH-bZzFYfYUaoWfoj4Rx2ZmQ2Q/s400/Presentation1.png"/></a></div>
On the left the arrow points at some haze in the AIA 171 image. In the right image the arrow points at about the same place (there is a bright streak just to the right to get you oriented), but the image is less hazy where plasma has left the Sun.
<P>
The material that left the Sun isn't all that close to the flare. But you can see in the movie that the haze goes away just after the flare. Look at the movie a few times and you will see the haze disappear.
<P>
There is also an excellent coronal cavity display at about 4 o'clock on the limb. These cavities are usually much slower in their evolution.
<P>
It is already a great Solar Cycle!
<!-- Make sure you label your posts with key words. -->Dean Pesnellhttp://www.blogger.com/profile/04074830032431506636noreply@blogger.com