Overview

Observers visiting Subaru Telescope use a work-station 'ana' for quick reduction. Some useful original tools to reduce and display COMICS data are prepared in 'ana'. Principally, login with your account given by administrator of subaru network system and ask how to use those tools to your support scientist. The main tools installed for COMICS are as follows:
1. XFC: a viewer for COMICS data.
2. 'q_' series program to reduce COMICS data.
We explain what they are and how to use them below. In 'ana', many standard tools to reduce data, such as IRAF, saoimage, IDL, and so on. You can of course use them to reduce COMICS data. However, note that some IRAF tasks cannot deal with 4-dimension image and COMICS data have four dimensions.

Viewer XFC/XFV

XFC is a viewer developed for displaying COMICS data. Though it was originally developed by K. Nakamura (NAOJ), but current version is developed using 'gtk' by H.Kataza (ISAS). Since COMICS has one detector in the imaging section and five detectors in the spectroscopic section, XFC are developed so that all of the six detector images can be shown. Current aspect of 'xfc' is shown below in Figure 1.

Figure 1. Aspect of 'xfc'.

In xfc, specify file names at the two small boxes at the upper left. 'Img' means the file name for imaging data, and 'Spc' means the file name for spectroscopic data. The file specified in the 'Img' white box is shown at the upper-left image. The rest five image section shows the file specified in the 'Spc' white box. You can also choose files from pop-up windows shown by clicking 'Img'/'Spc' button. The newest imaging and spectroscopic data will be written to files 'LATEST_I' and 'LATEST_S', respectively. If you click the 'LATEST_I' or 'LATEST_S' button, the newest data are displayed. From 'ana', run the following shell script from a window:
% xfcdw

On xfc, some buttons to reduce the displayed data are prepared. They are,

STA: do z-direction statictics for the selected region.

X: show x-direction cut for the seleceted region.

Y: show y-direction cut for the seleceted region.

Z: show z-direction cut for the seleceted region.

PSF: show the PSF fit against the selected region.

C: cancel selection of the region.

dir: show the directions on the displayed image.
You can select a rectangular region to run these programs. To select a region, click the central button of the mouse at two corners. The selected region are shown by a region enclosed by white lines. The result of STA will be shown in the upper-right section of xfc. Those of X, Y, Z, PSF are shown in the other pop-up windows. Since they are only xv window, you can save, edit, load them by usual xv commands. The result of 'dir' is shown as arrows specfying north and east direction directly on the displayed imaging data.

Figure 2. Reduction tools on xfc.

Figure 3. The result of x-cut.

Figure 4. Click 'dir' buttom to show direction on the images.

You can get the newest source of 'xfc' from http://canadia.ir.isas.ac.jp/comics/private/soft_xfc/index.html . If you found any bugs related to xfc and/or you have some ideas to improve xfc, please contact members of COMICS developping team.

"q" Series reduction program for COMICS data

The "q" series reduction programs are prepared for reduction of COMICS data. They are written in programming language 'C' and you can usually use them on your own computers. You can get the newest source of 'q_' series program from http://canadia.ir.isas.ac.jp/comics/private/soft_rbin/ . All of the program names start with 'q_'. The programs are as follows:

q_2val	Transform images into two-value images using a specified threshold value.
q_arith	Do addition, subtraction, multiplication, and division between images or between images and values.
q_badpix	Pick up bad pixels.
q_bsep	Distribute frames in the specified data into separate files by beams.
q_chgaxis	Change NAXIS value into 2, 3, or 4.
q_chopcmb	Do chop subtraction.
q_ecosum	Make real ECO mode image from COMA data.
q_fcombine	Take average, median, and stddev images from the input images.
q_head	Pick up the specified FITS header values.
q_headlst	Make tables of major useful FITS headers of the specified images.
q_list_stat	Do statistics, x-, y-, z-, w-cut in the specified region.
q_mkimg	Make images from data files of plain text.
q_noise	Measure the average and standard deviation values within the specified area.
q_photo	Make PSF fit to a selected region of the image.
q_plot_stat	Show the x-, y-, z-, w-cut in the specified region.
q_sky_nlow	Do wavelength calibration against data taken in the low-resolution spectroscopy in the N-band.
q_startrace	Trace a star position by fitting gaussians at each x.
q_subdark	Subtract dark current from the specfied data.
q_telmove	Calculate how much you should move the telscope.
q_transtable	Make table to transform the data taken in the low-resolution specttaken in the low-resolution spectroscopy in the N-band so that the wavelength and space axes align along the row and column, respectively.
q_transtable2	Make table to transform the data taken in the low-resolution specttaken in the low-resolution spectroscopy in the N-band so that the wavelength and space axes align along the row and column, respectively.
q_unittime	Divide COMQ files by the on-source integration time calculated from the FITS header values.
q_wcombine	Statistics of files with specified weight.

When you just put each command name and put return key, usage of each command is shown in Japanese. If you found any bugs related to xfc and/or you have some ideas to improve xfc, please contact members of COMICS developping team.