| Directive | Examples | Description |
|---|---|---|
| -gray | messier051.fits 1% 99% log | Input FITS file for grayscale image |
| -red | jband.fits -2s max gaussian-log | Input FITS file for red band of color image |
| -green | hband.fits -2s max gaussian-log | Input FITS file for green band of color image |
| -blue | kband.fits -2s max gaussian-log | Input FITS file for blue band of color image |
| -out/png | messier051.png | Output PNG image |
| -jpeg | messier051.jpg | Output JPEG image |
| -ct | 4 | Color table ID for grayscale image (see documentation) |
| -t | 1 | Color "enhancement" parameter for color images (see documentation) |
| -nowcs | Do not check input FITS files for matching WCS information | |
| -s | status.txt | Output completion message to status file (used by workflow managers) |
| -d | Turn on debugging output (large and really only for developer use) | |
| -csys | Galactic | Coordinate system to be used for marker/label placement |
| -color | green ffa080 | Set current color (used for grid/marks/labels) |
| -symbol | 30p box 2.5s 5 starred 36. | Set current symbol size and shape (use "none" to turn of symbols for multi-labelling) |
| -grid | Equ J2000 | Draw an coordinate grid overlay in the current color |
| -mark | 80.89386 -69.7561 | Place the current symbol at this location |
| -label | 202.4 47.2 "M 51" | Place the label text given at this location |
| -catalog | sdss.tbl | Process a table and draw symbols and/or place labels (uses columns ra,dec or lat,lon) |
| -imginfo | irac.tbl | Process a table and draw image outlines (uses columns ra1, dec1, ... ra4, dec4) |
| -colorcol | color | Column to use for symbol/image outline color |
| -scalecol | vmag 14. mag | Column to use for relative symbol scaling and scaling rules |
| -sizecol | galsize | Column with symbol sizes (not usually used with the scale column) |
| -shapecol | objtype | Column with symbol shapes |
| -labelcol | name | Column with text for location labels |
Note: Some of the examples use file names (e.g., jband.fits) and some
use table column name (e.g., galsize).
These will be different for your data.