{"id":587,"date":"2016-02-11T10:17:26","date_gmt":"2016-02-11T16:17:26","guid":{"rendered":"http:\/\/www.ssec.wisc.edu\/aeri\/?page_id=587"},"modified":"2020-10-21T00:53:21","modified_gmt":"2020-10-21T00:53:21","slug":"fov-mapping","status":"publish","type":"page","link":"https:\/\/www.ssec.wisc.edu\/aeri\/kb\/procedures\/calibration-verification\/fov-mapping\/","title":{"rendered":"FOV Mapping"},"content":{"rendered":"
\n
\n
\n

Power ON instrument<\/p>\n

Place the FOV mapping grid onto the test aperture (ABB, HBB, zenith)<\/p>\n

    \n
  • Remove BB or zenith port<\/li>\n
  • Attach FOV mapping grid using 4 screws<\/li>\n<\/ul>\n

    FOV_Mapping_AERI.xls<\/p>\n

      \n
    • (ssec\/projects\/AERI\/field guide)<\/li>\n
    • rename to FOV_Mapping_SN1NN_YYMMDD<\/li>\n
    • make tabs for each port<\/li>\n<\/ul>\n

      FOV mapping<\/p>\n

        \n
      • Set scan speed to 16 cm\/s<\/span><\/li>\n
      • Record spectrum amplitude at 4000 cm-1\n
          \n
        • XLim = 3980-4020<\/li>\n
        • YLim:  Use ‘max’ reading at the center gridpoint to set y scale\n
            \n
          • The y grid spacing defaults to 0.25 most of the time, which makes it hard to read values<\/li>\n
          • Setting the y scale to have 7 grid boxes forces decimal spacing (0.1), making it easier to read<\/li>\n
          • Recommend using YLim = -0.1-0.7, then switch to 0.7-1.4 as needed for higher values<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
          • Use the pen light tool to illuminate one hole at a time in the mapping grid<\/li>\n
          • For each column on the mapping grid\n
              \n
            • Make a background reading<\/li>\n
            • Make a ‘max’ reading at the center gridpoint<\/li>\n
            • Record the spectrum amplitude at each gridpoint, going down vertically<\/li>\n<\/ul>\n<\/li>\n
            • Repeat for each column<\/li>\n
            • Repeat for each view port (ABB, HBB, zenith)<\/li>\n
            • Return scan speed to 1 cm\/s<\/span><\/li>\n
            • Note: ABB and UW use mapping grids with different hole spacings – be sure to use the correct analysis spreadsheet<\/span><\/li>\n<\/ul>\n

              Acceptance:<\/p>\n

                \n
              • The LOS of the FTS shall be aligned with respect to the rotation axis of the scene selection mirror such that the intensity of a white light source is < 1% at the outer extent of the LOS Characterization jig at each optical head entry port (zenith, HBB, ABB)<\/li>\n
              • Note: BB aperture is 2.7″<\/li>\n<\/ul>\n

                Tuning:<\/p>\n

                  \n
                • SSEC template:  1 gridpoint = 2 deg scene mirror rotation<\/li>\n
                • SSEC template:  1 gridpoint = 4 full turns of rear kinematic mount screw<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                  Power ON instrument Place the FOV mapping grid onto the test aperture (ABB, HBB, zenith) Remove BB or zenith port Attach FOV mapping grid using 4 screws FOV_Mapping_AERI.xls (ssec\/projects\/AERI\/field guide) rename to FOV_Mapping_SN1NN_YYMMDD make tabs for each port FOV mapping Set scan speed to 16 cm\/s Record spectrum amplitude at 4000 cm-1 XLim = 3980-4020 […]<\/p>\n","protected":false},"author":14,"featured_media":0,"parent":324,"menu_order":4311,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-587","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/comments?post=587"}],"version-history":[{"count":2,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/587\/revisions"}],"predecessor-version":[{"id":1956,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/587\/revisions\/1956"}],"up":[{"embeddable":true,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/324"}],"wp:attachment":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/media?parent=587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}