{"id":991,"date":"2025-04-17T16:40:15","date_gmt":"2025-04-17T16:40:15","guid":{"rendered":"https:\/\/gonewithsolarwind.com\/?page_id=991"},"modified":"2025-04-18T16:48:02","modified_gmt":"2025-04-18T16:48:02","slug":"magnetograms-from-the-haleakala-stokes-polarimeter","status":"publish","type":"page","link":"https:\/\/gonewithsolarwind.com\/index.php\/magnetograms-from-the-haleakala-stokes-polarimeter\/","title":{"rendered":"Magnetograms from the Haleakala Stokes Polarimeter"},"content":{"rendered":"\n

Data type:<\/strong> dataset<\/p>\n\n\n\n

Publication date:<\/strong> 18 April 2025<\/p>\n\n\n\n

DOI:<\/strong> 10.25668\/nyp9-p503<\/a><\/p>\n\n\n\n

Abstract:<\/strong> This dataset contains the observations of vector magnetic fields of active regions taken with the Haleakala Stokes Polarimeter (HSP) from 1988-2000. The instrument is described in Mickey, D. L.: 1985, \u201cThe Haleakala Stokes Polarimeter<\/strong>\u201d, Solar Physics, 97<\/strong>, no. 2, pp. 223\u2013238, DOI: 10.1007\/BF00165987<\/a>.<\/p>\n\n\n\n

Description of data:<\/strong> This data set of Haleakala Stokes Polarimeter vector magnetograms was reduced by Dr. Alexei A. Pevtsov (apevtsov@nso.edu). The azimuth ambiguity resolution was done in the “automatic” regime, so some disambiguation could not be optimal. At least one magnetogram in this data set has incorrect magnetic polarities. “JZ” in the directory names indicates that the data were disambiguated, and the vertical component of electric current density was computed. Magnetograms with the same NOAA active region number are stored in the same directory (JZ_NOAA). With respect to NOAA AR No., in a few cases, FITS headers may be incorrect as some regions have been misidentified by the observer. The data set should include all HSP observations taken before 25 Sep 2000 although a few magnetograms might still be missing.<\/p>\n\n\n\n

JZ_NOAA – magnetograms for numbered active regions (NOAA active region number)
JZ_NONE – magnetic flux that is associated with a non-numbered region
JZ_EFR – emerging flux
JZ_ELIM – E-limb
JZ_WLIM – West limb
JZ_NPOL – N-pole
JZ_SPOL – S-pole
JZ_FILA – filament<\/p>\n\n\n\n

Files in each folder are in the Flexible Image Transport System (FITS) format with the following filenames: the first letter is “J” indicating that the azimuths were disambiguated, and electric currents were computed. The next 6 digits correspond to Year, Month, and Day. The last four digits correspond to UT hour and minutes, when the observations were taken.<\/p>\n\n\n\n

HSP regular observations began around the launch of Yohkoh satellite. This period has two major gaps: June 6, 1996 – July 10, 1997 – due to HSP instrumental problems, Dec. 29, 1999 – March 6, 2000 – due to lack of observers.<\/p>\n\n\n\n

(Note from 02\/28\/2001, AAP)<\/p>\n\n\n\n

(Note from 5 January 2018, AAP):
This data corresponds to one of three copies of DVDs created by A.A. Pevtsov at the end of 2000. In December 2017, copying DVD to disk failed for one fits file. With the exception of this file, all data from the DVD had been recovered.<\/p>\n\n\n\n

This work is licensed under a Creative Commons Attribution 4.0 License<\/a>.<\/p>\n\n\n\n

Recommended citation<\/strong>: Pevtsov, A.A.: 2025, \u201cMagnetograms from the Haleakala Stokes Polarimeter\u201d, WIM Research & Education, DOI: 10.25668\/nyp9-p503<\/a><\/p>\n\n\n\n

Access to data: HSP<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Data type: dataset Publication date: 18 April 2025 DOI: 10.25668\/nyp9-p503 Abstract: This dataset contains the observations of vector magnetic fields of active regions taken with the Haleakala Stokes Polarimeter (HSP) from 1988-2000. The instrument is described in Mickey, D. L.: 1985, \u201cThe Haleakala Stokes Polarimeter\u201d, Solar Physics, 97, no. 2, pp. 223\u2013238, DOI: 10.1007\/BF00165987. Description … <\/p>\n

Continue reading “Magnetograms from the Haleakala Stokes Polarimeter”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/pages\/991"}],"collection":[{"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/comments?post=991"}],"version-history":[{"count":13,"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/pages\/991\/revisions"}],"predecessor-version":[{"id":1066,"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/pages\/991\/revisions\/1066"}],"wp:attachment":[{"href":"https:\/\/gonewithsolarwind.com\/index.php\/wp-json\/wp\/v2\/media?parent=991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}