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 . CRPIX1, Reference pixel for array axis-1 [first pixel is: ]  . CRPIX1, Reference pixel for array axis-1 [original CRPIX1 - x_offset (lower left corner of the bounding box) ]
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 . CRPIX2, Reference pixel for array axis-2 [first pixel is: ]  . CRPIX2, Reference pixel for array axis-2 [ original CRPIX2 - y_offset (lower left corner of the bounding box)]

Patches_Found Data Series

Feature identification software will identify a small number of solar active region patches using a line-of-sight magnetogram and an intensity image. This data series contains information for each time step during the SDO mission. It provides geometric mapping info and a bitmap image, pointers to the image data, and a number of keywords computed for the patch.

# SERIES INFO

  • DATANAME = Patches_Found
  • Retention = 20
  • Archive = 1
  • Primekeys = T_REC, PNUM

# PRIME KEY INFO

  • T_REC, TIME, Slotted
  • T_REC_STEP = 12MIN
  • T_REC_EPOCH = 1976.12.31_23:59:45.000_UTC

  • PNUM, INT - One entry for each active region identified at this time step

# GEOMETRY KEYWORDS - PIXEL Info for Bounding Box

  • IMAGEX0, INT [x-pixel of center of bounding box]
  • IMAGEY0, INT [y-pixel of center of bounding box]
  • # Half widths of the bounding box in X and Y directions
  • HWIDTH1, INT [Half width of the bounding box, in X-direction, in pixels]
  • HWIDTH2, INT [Half width of the bounding box, in Y-direction, in pixels]

# COORDINATE KEYWORDS

  • CROTA2, link,"CROTA2",sourcerec
  • CTYPE1 = "HPLN_TAN"
  • CRPIX1, Reference pixel for array axis-1 [original CRPIX1 - x_offset (lower left corner of the bounding box) ]
  • CRVAL1, The x-coordinate of the reference pixel, in arcsec
  • CUNIT1, "arc sec"
  • CDELT1, The detector plate scale at the reference pixel [0.5 arcsec/pixel]
  • CTYPE2, "HPLT_TAN"
  • CRPIX2, Reference pixel for array axis-2 [ original CRPIX2 - y_offset (lower left corner of the bounding box)]
  • CRVAL2, The y-coordinate of the reference pixel, in arcsec
  • CUNIT2, "arc sec"
  • CDELT2, The detector plate scale at the reference pixel [0.5 arcsec/pixel]

# OTHER KEYWORDS FOR PATCH

  • PATCHQUAL, NT

  • B0, link, "B0", sourcerec - note - HPLT_TAN - fix?

  • ARP_AREA, DOUBLE [Area of the active region]
  • I_MIN, FLOAT [Minimum intensity in the patch]
  • # OTHER INFO
  • DATE, TIME, [date and time the record was last updated, in ISO format]
  • COMMENTS, STRING [Description of the data]

# SEGMENT INFO

  • data:arp_map, int, vardims, 2, 0, 0, fitz, 0.0, 1.0,"BITMAP of ACTIVE REGION"

#LINK INFO

  • link: sourcerec, "HMI.Blos", dynamic
  • link: sourceint, "HMI.Ic", dynamic

JsocWiki: PatchesFound (last edited 2013-05-01 04:35:25 by localhost)