| InvalidExpression | error |
| | The input expression for this spatial region was not
valid. |
| InvalidRegion | error |
| | The centre of the source or background region lies outside of the image |
| invalidArraySize | error |
| | The image is not two dimensional. |
| InvalidWCSType | error |
| | The image axes specified in the CTYPE1 and CTYPE2
keywords are not compatible. |
| invalidCoordType | error |
| | The input coordinate system is not recognised. |
| noCCDNumber | error |
| | A position has been given in RAW chip coordinates but no
CCD number has been supplied. Use ccdno=nn on the command line. |
| UnknownModeString | warning |
| | If the spectrum contains an
observing mode (in the keyword SUBMODE) which is not recognised then the
software assumes that the common PrimeFullWindow mode was in use.
corrective action: PrimeFullWindow |
| NoInstrument | warning |
| | If the INSTRUME keyword is not set in the
image header a warning is issued and the default of MOS-1 is taken.
The instrument determines the PSF used and the position of the optical-axis. |
| InvalidPosWCSInfo | warning |
| | The REFerence keywords in the image header,
e.g. REFXCRPX, REFXCRVL, REFXCDLT are incomplete. Defaults are chosen but
there is likely to be a problem later. |