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ROSAT Guest Observer Facility

What 'gotchas' exist in the spatial package?

(8/1/92)


  1. Coordinates are defined diffently between IRAF/PROS and the SASS output. A y pixel location of a source from the output must be "flipped" to correspond to the same location in IRAF.
  2. The blocking factor must be included first, before the image sub-section, as in: file.qp[bl=8][1300:1500,1400:1600]. THIS DOES MEAN that the image sub-section values refer to the BLOCKED image, and not the original .qp file.


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This file was last modified on Friday, 27-Jul-2001 14:59:30 EDT

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