This page (revision-27) was last changed on 26-Oct-2022 21:57 by Peter Young

This page was created on 07-Jun-2010 19:35 by PeterYoung

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25 05-Apr-2011 18:14 6 KB PeterYoung to previous | to last
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At line 49 changed one line
or, perhaps more reliably (especially as concerns older data), by taking the average of the extreme values given by the xpos and ypos methods.
or, perhaps more reliably (especially as concerns older data), by taking the average of the extreme values given by the xpos and ypos methods. As of early July 2010 a keyword, '/raster', has been added to the XCEN and YCEN methods. Setting this keyword gives the center of the raster at the time of the beginning of the raster (DATE_OBS), i.e. by calling
At line 51 changed one line
Note that each of these is an array of same size as the number of exposures. This is because the center of the raster moves with time due to the spacecraft jitter.
{{{IDL> xcen_raster=data->getxcen(/raster)
IDL> ycen_raster=data->getycen(/raster)}}}
At line 54 added 2 lines
Note that each of these method calls (except the last) returns an array of same size as the number of exposures. This is because the center of the raster moves with time due to spacecraft tracking and jitter.
This page (revision-27) was last changed on 26-Oct-2022 21:57 by Peter YoungTop