Back to Programs

display

display displays in ds9 either a single CCD frame  or the mosaiced image of a set of 8 CCD frames of a given IMACS exposure.

USAGE	display frame [buffer] [-h hdu_number] [-p plane]
INPUT	frame is the frame or set of frames to be displayed buffer is the number of the ds9 display buffer; default = 1. hdu_number in the input ccd file; default = 0 plane specifies which plane of a 3D frame is to be displayed; default = zero
OUTPUT	none
PARAMETERS	none

Details:

frame and buffer must be provided in the order shown above, the other parameters may follow in any order. The ds9 display is set for Zscale intensity scaling, which is usually satisfactory out of the box, however scaling can be changed if needed using the ds9 scale menu.

display looks for image files in the directory COSMOS_IMAGE_DIR. If a frame with the name frame.fits is found, it is displayed. If not found, it displays the set of 8 frames with the root name frame. If for some reason, you have both a file frame.fits and a set of files frame_cn.fits in the same directory, invoke display8 to display the set of 8.

Note that the image displayed on ds9 is not astrometrically accurate: the 8 frames are displayed adjacent to each other without the actual chip gaps.

Back to Programs