The procedure accepts a date range over which to plot the temperatures. The scirpt does a series of error checking, and after dark subtraction updates the image header to display the time, date and filename of the dark file. One can also input a magnitude limit. It checks for the existence of the flat field file and whether it has been normalized. After flatfielding it updates the history of the header with the date, time and name of the flatfield file used flatfield - a script to flatfield Near Infrared data using sky images.
Users can input the time step within which to consider using the sky frames.
The script also can take an option to only use sky images with the same polarization as the object image if one is doing polarimetry houdb - a script to take the files ngc2000.dat found on the Astronomical Data Center website and parse it to only include certain fields, correcting for the fact that in the original file some fields are missing. The script produces a conveniently formatted output file. This was written for HOU . This script is useful for combining many exposures of the same part of the sky or for combining mosaiced images into one larger image. The procedure outputs the measured FWHM of each star, its ellipticity and the name of each image.