View source for Talk:Solar and Heliospheric Observatory

{{Talkheader}}
{{WikiProject banner shell|class=B|
{{WikiProject Europe|ESA=yes|ESA-importance=high|importance=mid}}
{{WikiProject Astronomy|importance=Mid}}
{{WikiProject Spaceflight|importance=Mid}}
{{WikiProject Weather |importance=Low |space-weather-task-force=yes}}
}}
{{Broken anchors|links=
* <nowiki>[[Sun#Magnetic field|magnetic fields]]</nowiki> Anchor [[Sun#Magnetic field]] links to a specific web page: [[Magnetic field]]. The anchor (#Magnetic field) has been [[Special:Diff/1089388389|deleted by other users]] before. <!-- {"title":"Magnetic field","appear":{"revid":139292860,"parentid":139292827,"timestamp":"2007-06-19T21:26:11Z","removed_section_titles":[],"added_section_titles":["Overview","Life cycle","Structure","Core","Radiation zone","Convection zone","Photosphere","Atmosphere","Solar cycles","Sunspots and the sunspot cycle","Possible long term cycle","Theoretical problems","Solar neutrino problem","Coronal heating problem","Faint young Sun problem","Magnetic field","History of solar observation","Early understanding of the Sun","Development of modern scientific understanding","Solar space missions","Sun observation and eye damage","See also","References","External links","CITEREFKerr1986","CITEREFFalk1977","CITEREFBonanno2002","CITEREF1997","CITEREFSackmann1993","CITEREFGodier2000","CITEREFLewis1983","CITEREFPlait1997","CITEREFGibson1973","CITEREFShu1991","CITEREF2005","CITEREFLean1992","CITEREFEhrlich2007","CITEREF2007","CITEREFHaxton1995","CITEREFSchlattl2001","CITEREFAlfvén1947","CITEREFSturrock1981","CITEREFParker1988","CITEREFKasting1986","CITEREFThomson1862","CITEREFLockyer1890","CITEREFDarden1998","CITEREFBethe1938","CITEREFBethe1939","CITEREF1957","CITEREFSt. Cyr1998","CITEREFMarsh1982","CITEREFEspenak","why the sun is yellow"]},"disappear":{"revid":1089388389,"parentid":1089387569,"timestamp":"2022-05-23T14:08:00Z","removed_section_titles":["Magnetic field","Variation in activity","Long-term change","CITEREFEhrlich2007","CITEREFClark2007"],"added_section_titles":["Sunspot","Solar activity"]}} -->
}}

== SOHO Copyright Notice ==
[http://sohowww.nascom.nasa.gov/data/summary/copyright.html SOHO Copyright Notice:] The use of SOHO images or data for public education efforts and non-commercial purposes is strongly encouraged and requires no expressed authorization. It is requested, however, that any such use properly attributes the source of the images or data as: "Courtesy of SOHO/[instrument] consortium. SOHO is a project of international cooperation between ESA and NASA." Where [instrument] stands for the name of the instrument that acquired the data (i.e. SOHO/EIT, SOHO/LASCO, etc).

Another, shorter, version of the notice: "SOHO (ESA & NASA)" is also acceptable. 

[[User:JamesDay|JamesDay]] 09:43, 27 Oct 2003 (UTC)

{{fixed}} Would a picture of the satellite itself do better than one of the pictures it took?  Or maybe in addition?  --  [[User:Zandperl|zandperl]]
:It's most interesting because of the sun, so those seem to deserve priority, but I would like to see a picture of the satellite as well. [[User:JamesDay|JamesDay]] 15:53, 29 Oct 2003 (UTC)

::Added a better picture of SOHO. To answer the questions above:
(1) you need both a picture of the vehicle and a picture of the science. Well, not ''need'', but what's the point of an article without a picture of the vehicle. [[User:RockinRob|Rob]] 06:58, 10 March 2006 (UTC)

{{fixed}} It would be great if someone could include a paragraph or two mentioning the efforts that went into the recovery of the SOHO after its tracking system went kaput:  http://sohowww.nascom.nasa.gov/operations/Recovery/recovery_diary.html  --[[User:Hooperbloob|Hooperbloob]] 20:54, 8 Jan 2005 (UTC)

:I worked on SOHO from 1996-1999. I could write something about the 1998 anomaly. I've been carrying around info about it for years, maybe this is why. But to describe it adequately would require a separate article IMO. Opinions? [[User:RockinRob|Rob]] 05:23, 10 March 2006 (UTC)

:On second thought, I could be brief. I'll write a brief description up. [[User:RockinRob|Rob]] 02:39, 11 March 2006 (UTC) Please see Prototype Text below. Comments welcome. [[User:RockinRob|Rob]] 18:48, 11 March 2006 (UTC)

I corrected the Instruments and added a Scientific Objectives section. I also move the 'see also' links to their own section, but I think they could be trashed. I'd like to break the overview of into a smaller overiew, and incoroprate some of the information into a Spacecraft Subsystems section. I'll verify dates and mission phases later. But what I really need to do is stop being late to work because I stay up at night editing articles on Wikipedia. [[User:RockinRob|Rob]] 06:23, 10 March 2006 (UTC)

Any other requests? [[User:RockinRob|Rob]] 07:09, 10 March 2006 (UTC)

Spelled out SOHO but can't get it to center above the new picture. A little help? [[User:RockinRob|Rob]] 07:13, 10 March 2006 (UTC)

Move Sci Objectives above Instruments. That's the order in the SOHO Users Manual. [[User:RockinRob|Rob]] 12:05, 10 March 2006 (UTC)

Added links for Instruments, said they are mounted on the Payload Module.[[User:RockinRob|Rob]] 02:38, 11 March 2006 (UTC)

== Loss of SOHO Prototype Text ==
The SOHO [http://umbra.nascom.nasa.gov/soho/SOHO_final_report.html Mission Interruption] sequence of [http://sohowww.nascom.nasa.gov/operations/Recovery/recovery_diary.html events] began on 24 June 1998, while the SOHO Team was conducting a series of spacecraft [[gyroscope]] calibrations and maneuvers. Operations proceeded until 23:16 UTC when SOHO lost lock on the Sun, and entered an emergency [[attitude control]] mode called Emergency Sun Reacquisition ([[ESR]]). The SOHO Team attempted to recover the observatory, but SOHO entered the emergency mode again on June 25 02:35 UTC. Recovery efforts continued, but SOHO entered the emergency mode for the last time at 04:38 UTC. All contact with SOHO was lost, and the [http://umbra.nascom.nasa.gov/soho/prelim_and_background_rept.html mission interruption] had begun. SOHO was no longer pointing at the Sun, spinning, and losing electrical power.

Expert [[ESA]] personnel were immediately dispatched from [[Europe]] to the [[United States]] to direct operations. Days passed without contact from SOHO. On [[July 23]], the [[Arecibo Observatory]] and [[DSN]] antennas were used to locate SOHO with [[radar]], and to determine its location and [[attitude]]. SOHO was close to its predicted position, oriented with its side versus the usual front [[Optical Surface Reflector]] panel pointing toward the Sun, and was rotating at one [[Revolutions per minute|RPM]]. Once SOHO was located, plans for contacting SOHO were formed. On [[3 August]] a [[Carrier_wave|carrier]] was detected from SOHO, the first signal since [[June 25]]. After days of charging the [[Battery (electricity)|battery]], a successful attempt was made to [[modulation|modulate]] the carrier and downlink [[telemetry]] on [[August 8]]. After instrument temperatures were downlinked on [[August 9]], [[data analysis]] was performed, and planning for the SOHO recovery began in earnest.

The [http://sohowww.nascom.nasa.gov/operations/Recovery/recovery_team.html SOHO Recovery Team] began by allocating the limited electrical power. After this, SOHO's anomalous orientation in space was determined. Thawing the frozen [[hydrazine]] fuel tank using SOHO's [[thermal control]] heaters began on [[August 12]]. Thawing pipes and the [[thruster]]s was next, and SOHO was re-oriented towards the Sun on [[September 16]]. After nearly a week of spacecraft bus recovery activities and an orbital correction maneuver, the SOHO spacecraft (bus) returned to normal mode on [[September 25]] at 19:52 UTC. Recovery of the instruments began on [[October 5]] with SUMER, and ended on October 24, 1998 with CELIAS.

Only one [[gyroscope| gyro]] remained operational after this recovery, and on [[December 21]] that gyro failed. Attitude control was accomplished with manual thruster firings that consumed 7kg of fuel weekly, while [[ESA]] developed a new [[gyroless operations]] mode that was successfully implemented on February 1, 1999.

=== Additional References ===
*{{cite web | title=SOHO's Recovery - An Unprecedented Success Story | url=http://www.esa.int/esapub/bulletin/bullet97/vandenbu.pdf | accessdate=March 11, 2006 }} -PDF
*{{cite web | title=SOHO Mission Interruption Preliminary Status and Background Report - July 15, 1998 | url=http://umbra.nascom.nasa.gov/soho/prelim_and_background_rept.html | accessdate=March 11, 2006 }} 
*{{cite web | title=SOHO Mission Interruption Joint NASA/ESA Investigation Board Final Report - August 31, 1998 | url=http://umbra.nascom.nasa.gov/soho/SOHO_final_report.html | accessdate=March 11, 2006 }}
*{{cite web | title=SOHO Recovery Team | url=http://sohowww.nascom.nasa.gov/operations/Recovery/recovery_team.html | accessdate=March 11, 2006 }} Image

Added the rough draft above here first instead of in article. Edits, comments welcome. I tried to have once sentence per IMHO significant event. Based mainly on An Unprecedented Success Story and my memory of the events. [[User:RockinRob|Rob]] 20:34, 11 March 2006 (UTC)

you just copied the article. thats kind of irrelavent.  Billycheezit[[Special:Contributions/129.44.25.158|129.44.25.158]] ([[User talk:129.44.25.158|talk]]) 20:10, 1 May 2008 (UTC)

== Launch vehicle ==

Do you know what launch vehicle did SOHO took on? Thanks. [[User:Bigtop|<span style="color:blue;">Big</span>]][[User talk:Bigtop|'''<span style="color:gray;">top</span>''']] 23:14, 28 August 2006 (UTC)

== pictures ==

Could we get some better pictures/diagrams...[[User:Smallman12q|Smallman12q]] ([[User talk:Smallman12q|talk]]) 23:30, 15 February 2010 (UTC)

== External links modified ==

Hello fellow Wikipedians,

I have just modified 2 external links on [[Solar and Heliospheric Observatory]]. Please take a moment to review [https://en.wikipedia.org/w/index.php?diff=prev&oldid=781568554 my edit]. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit [[User:Cyberpower678/FaQs#InternetArchiveBot|this simple FaQ]] for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20060210015827/http://www.srl.utu.fi/projects/erne/index_english.html to http://www.srl.utu.fi/projects/erne/index_english.html
*Added archive https://web.archive.org/web/20060615104607/http://www.mps.mpg.de/en/projekte/soho/sumer/ to http://www.mps.mpg.de/en/projekte/soho/sumer/

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

{{sourcecheck|checked=false|needhelp=}}

Cheers.—[[User:InternetArchiveBot|'''<span style="color:darkgrey;font-family:monospace">InternetArchiveBot</span>''']] <span style="color:green;font-family:Rockwell">([[User talk:InternetArchiveBot|Report bug]])</span> 00:43, 22 May 2017 (UTC)

== External links modified ==

Hello fellow Wikipedians,

I have just modified 2 external links on [[Solar and Heliospheric Observatory]]. Please take a moment to review [[special:diff/809776212|my edit]]. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit [[User:Cyberpower678/FaQs#InternetArchiveBot|this simple FaQ]] for additional information. I made the following changes:
*Added {{tlx|dead link}} tag to http://spdext.estec.esa.nl/content/news/index.cfm?aid=1&cid=1&oid=32426
*Added archive https://web.archive.org/web/19991009161459/http://golfwww.medoc-ias.u-psud.fr/ to http://golfwww.medoc-ias.u-psud.fr/
*Added archive https://web.archive.org/web/20051021222238/http://europa.ieec.fcr.es/libpoint/papers/roberts.pdf to http://europa.ieec.fcr.es/libpoint/papers/roberts.pdf

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

{{sourcecheck|checked=false|needhelp=}}

Cheers.—[[User:InternetArchiveBot|'''<span style="color:darkgrey;font-family:monospace">InternetArchiveBot</span>''']] <span style="color:green;font-family:Rockwell">([[User talk:InternetArchiveBot|Report bug]])</span> 09:27, 11 November 2017 (UTC)

== A Commons file used on this page has been nominated for speedy deletion ==
The following Wikimedia Commons file used on this page has been nominated for speedy deletion:
* [[commons:File:SoHO EIT 304 20161101 131938.jpg|SoHO EIT 304 20161101 131938.jpg]]<!-- COMMONSBOT: speedy | 2018-08-14T13:07:09.752884 | SoHO EIT 304 20161101 131938.jpg -->
You can see the reason for deletion at the file description page linked above. —[[User:Community Tech bot|Community Tech bot]] ([[User talk:Community Tech bot|talk]]) 13:07, 14 August 2018 (UTC)
: I looked at this and te removal was correct. SOHO images are copyright as they are an ESA product meaning they don't have the same public domain license that we normally see from NASA produced images and text. See http://www.esa.int/spaceinimages/ESA_Multimedia/Copyright_Notice_Images for ESA's license which is not compatible with Wikipedia Commons though it appears we can upload and use images on Wikipedia. [[:Category:European Space Agency images]] shows how to tag ESA images that are uploaded to Wikipedia.

: Unfortunately, I don't know how to get specific old SOHO images such as ''SOHO EIT 304 20161101 131938.jpg,''.  The edit that removed the image is [https://en.wikipedia.org/w/index.php?title=Solar_and_Heliospheric_Observatory&type=revision&diff=854909739&oldid=853335032 this one] where we can see the caption was "Raw image at 304Å from the [[Extreme ultraviolet Imaging Telescope|EIT]], constructed from data recorded on November 11, 2016."  The image uploaded was similar to what's available at https://sohowww.nascom.nasa.gov/data/realtime/eit_304/ but at November 11, 2016 there were several prominent sunspots and solar flares meaning the picture was more interesting than what's typically available from the EIT at 304Å. --[[User:Marc Kupper|Marc Kupper]]&#124;[[User talk:Marc Kupper|talk]] 02:26, 27 September 2018 (UTC)

== SMMQP9166@0VVPX ==

QQQ [[Special:Contributions/103.113.194.6|103.113.194.6]] ([[User talk:103.113.194.6|talk]]) 15:47, 16 April 2022 (UTC)