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adjust-offset

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adjust-offset

adjust-offset allows one to make manual adjustments to a dewar offset file


USAGEadjust-offset file deltax deltay [deltatheta] [deltascale]
INPUT
file.dewoff is the name of an existing dewar offset file
deltax is the x offset to be applied, in pixels
deltay is the y offset to be applied, in pixels
deltatheta is the angle offset to be applied, in degrees
deltascale is the factor by which the scale should be multiplied
OUTPUTa new version of file.dewoff is produced; the old file is moved to file.dewoff%
PARAMETERSnone


Details:

Sometimes manual adjustments work better than those computed automatically. adjust-offset allows one to, for example, overlay predicted positions of apertures or spectral lines on an image and apply x, y, and theta adjustment to improve the fit. At present, this is the only way to align the IFU, or longslits.


Notes:

  • deltatheta and deltascale are optional, but deltatheta must be specified if deltascale is.
  • deltax, deltay, and deltatheta are additive factors, 0 => no change;
  • deltascale is a multiplicative factor, 1 => no change


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