Commands

• alias - rename a command string
• background - calculate average image background.
• box - select a box region
• cct - change colour table
• circle - select a circular region
• cl - change the number of colour levels
• close_pg_window - close the pgplot graphics window.
• contour - display iso-intensity contour levels
• grid - overlay a sky coordinate grid
• cpd - change plot device
• detect - source detection
• display - display the current image
• cey - change the equinox
• exit - quit
• extract - a spectrum and a lightcurve
• flux - Count-rate to flux conversion
• header - display the ximage header
• help - ximage help
• hotspot - show position of EXOSAT CMA hot spot
• info - text overlay
• label - write labels on the image
• levels - list intensity levels
• log - open a log file
• pixel_to_ra_dec - convert pixel to sky coordinates
• polygon - define a polygon area
• psf - estimate the point spread function
• ra_dec_to_pixel - sky to detector coordinates
• read_image - read an image or events files
• rebin - rebin the current image
• remove_sources - remove sources
• rescale - rescale the current image
• resize - change the pixels size of the current image
• restore_image - restore the saved image
• rotate - rotate the current image
• saoimage - Start the SAOIMAGE display package
• save_image - save the current image in memory
• save_levels - save current color levels
• scale - plot color scale
• script - write a command script
• show - current ximage status
• simulate - simulate an image
• skymap - overlay a starchart
• skyview - retrieve an image from skyview
• slice - draw an x or y slice of the image
• smc - minimum display color level
• smooth - gaussian image smoothing
• sosta - source statistics
• sum_images - add the saved and current images
• title - write an image title
• vignet - correct exposure map for vignetting
• write_image - write the current image to a file