INSTRUCTIONS FOR MAKING COLOR IMAGE

1. Correct the badpix with a mask. Note that fixpix looks at the
stupid header keywords: LTV1 and LTV2. These should be removed from
the headers of the images and the masks if you are going to run
fixpix.

 hedit obj*.imh ltv* del+

Here is the badpix mask for 0.9m (Tek2K_3 ):
14 14 507 666
24 24 464 692
24 25 492 520
36 36 451 680
36 37 480 520
51 51 520 666
64 64 575 672
70 70 650 670
307 307 440 1024
937 937 180 270

2. Get at least 2 images, preferably >3 in BVI. Cut out the area near
the galaxy, say the 800 pix near the galaxy:

 yalocen r*.fits
 filecalc junk.dat "$1-400;$1+399;$2-400;$2+399" form="[%d:%d,%d:%d] "

3. Copy all files to *.fits
 cpfits s*.imh del+

4. Run 

 $SNSEARCH/imregister_new.pl r001.fits r002.fits -out s002.fits -force

to get aligned images.

You may have to set the threshold differently, like thresh=20 or 40

For some reason, one of the images did not work. So I measured a star 
r479    707.80  302.42 <== reference image
obj482  709.18  301.14 

 imshift obj482.imh r482 xs=-1.38 ys=1.28

5. Bring the skies to zero using "getsky.cl".  This first outputs
temp.cl which brings the sky to 0. This also brings the interpolated
part of the image to a very negative value. So you also have to run
"temp1.cl" to correct for the interpolation.

6. Combine the image 

If you have lots of images, just scale on the galaxy.

 imdel temp
 imcomb c*.fits temp comb=ave reject=avsig scale=mean \\
 stat=[385:415,385:415] nhig=1 nlo=1 hth=20000
 displ temp 1

or if you have two images, get rid of the cr's. You can check the
noisemodel using stsdas.hst.wfpc program noisem.

 imdel test1.imh,test1.pl
 imcomb @inb temp comb=av reject=crr gai=2.1 rd=4.5 sn=0.2 pl=temp gro=1
 displ temp.imh 1
 displ test.pl 2


7. Finally run 

t1.cl:
del test.rgb
rgbsun regi regv regb test.rgb \\
rz1=-5. \\
gz1=-5. \\
bz1=-5. \\
rz2=200. \\
gz2=110. \\
bz2=70. log-
!xv test.rgb

Output the file to tif, or whatever. The log plot looked nice, but
there was too much noise that appeared as color speckels.

The file then can be edited in PhotoShop to make it look nicer.