adjust-offset allows one to make manual adjustments to a dewar offset file
| USAGE | adjust-offset file deltax deltay [deltatheta] [deltascale]
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| INPUT |
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| OUTPUT | a new version of file.dewoff is produced; the old file is moved to file.dewoff%
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| PARAMETERS | none |
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