IMWCS DSS: Fit WCS Using Reference Stars from a DSS Image

$ imwcs -v -i 100 -c i17h.dss.fits.stars i17h.fits
i17h.fits:
RA= 5:47:56.500 DEC=-25:15:01.90 W=251 H=239 ArcSecs/Pixel=1.15515
Catalog i17h.dss.fits.stars : 25 / 26 / 25 found
using all 25 reference stars
i17h.dss.fits.stars:
    1.0000  5:47:58.607 -25:12:55.88  0.00  100.9  228.1
    2.0000  5:47:50.522 -25:14:22.51  0.06  195.4  153.5
    3.0000  5:47:53.997 -25:15:01.38  0.36  154.8  119.9
    4.0000  5:47:46.429 -25:15:18.17  0.41  243.3  105.5
    5.0000  5:47:52.001 -25:15:36.11  0.52  178.1   90.0
    6.0000  5:48:00.642 -25:13:02.68  0.59   77.0  222.3
    7.0000  5:47:52.479 -25:16:56.13  0.65  172.5   21.0
    8.0000  5:47:50.409 -25:16:28.10  0.78  196.7   45.2
    9.0000  5:48:03.220 -25:13:24.94  0.79   46.9  203.1
   10.0000  5:47:58.646 -25:15:45.38  0.87  100.4   82.0
   11.0000  5:48:05.325 -25:16:23.70  0.98   22.3   49.0
   12.0000  5:47:58.643 -25:14:19.19  1.17  100.4  156.3
   13.0000  5:47:58.052 -25:14:40.84  1.19  107.3  137.7
   14.0000  5:47:55.692 -25:14:11.65  1.21  135.0  162.8
   15.0000  5:48:00.874 -25:13:48.63  1.38   74.3  182.7
   16.0000  5:47:49.342 -25:13:14.75  1.40  209.2  211.9
   17.0000  5:48:02.699 -25:14:36.45  1.58   53.0  141.4
   18.0000  5:47:50.736 -25:14:00.49  1.78  192.9  172.4
   19.0000  5:48:04.903 -25:14:59.10  1.79   27.2  121.9
   20.0000  5:47:56.320 -25:16:41.41  1.88  127.6   33.7
   21.0000  5:48:03.271 -25:15:33.30  1.97   46.3   92.4
   22.0000  5:48:06.261 -25:13:42.73  2.07   11.3  187.7
   23.0000  5:48:01.318 -25:16:54.33  2.29   69.2   22.6
   24.0000  5:48:02.642 -25:14:01.79  2.45   53.7  171.3
   25.0000  5:47:49.058 -25:16:45.73  2.72  212.5   30.0
using all 25 image stars
Im:  108.3   61.0  17171.5 7773
Im:  108.0  210.8  11505.7 9646
Im:  204.9  134.3   8862.1 3865
Im:  143.2  143.9   1499.7 788
Im:  187.0   69.8   1475.2 822
Im:   84.1  204.8   1271.0 546
Im:   33.9  102.1   1102.1 759
Im:  163.7  100.9    972.7 702
Im:   29.0   27.5    922.4 689
Im:  115.2  118.5    891.3 260
Im:   81.2  164.0    805.7 442
Im:  151.9  120.3    772.0 319
Im:  222.9    8.9    737.8 466
Im:  218.5  136.1    633.4 401
Im:  136.1   12.2    523.1 237
Im:  207.1   24.9    382.0 207
Im:  202.0  154.2    341.7 154
Im:  128.9  100.9    276.6 243
Im:  231.9  170.0    273.3 278
Im:   53.2  184.8    259.6 137
Im:  108.0  137.0    250.8 152
Im:   69.3  105.8    240.9 108
Im:   60.1  152.0    222.2 136
Im:  138.9  201.9    188.6 178
Im:   17.1  168.8    149.0 100
0:  5:47:57.183 -25:14:39.50 rot=0.265 del=-1.1379 -1.1379 y=2.44437
1:  5:47:57.183 -25:14:39.50 rot=0.265 del=-1.1379 -1.1379 y=2.44437
2:  5:47:57.183 -25:14:39.50 rot=0.265 del=-1.1379 -1.1379 y=2.44437
3:  5:47:57.183 -25:14:39.50 rot=0.265 del=-1.1379 -1.1379 y=2.44437
4:  5:47:57.183 -25:14:39.50 rot=0.265 del=-1.1379 -1.1379 y=2.44437
iter=305
 cra=  5:47:57.183 cdec= -25:14:39.50 rot= 0.2651 del=-1.1379 -1.1379
 1: X: g  5:47:49.058 s'  5:47:49.014 e: -0.6554
    Y: g: -25:16:45.73 s': -25:16:45.38 e:   0.35 r=  0.74
 2: X: g  5:47:58.607 s'  5:47:58.653 e: 0.6947
    Y: g: -25:12:55.88 s': -25:12:55.58 e:   0.30 r=  0.76
 3: X: g  5:47:50.522 s'  5:47:50.526 e: 0.0633
    Y: g: -25:14:22.51 s': -25:14:22.71 e:  -0.20 r=  0.21
 4: X: g  5:47:53.997 s'  5:47:53.983 e: -0.2057
    Y: g: -25:15:01.38 s': -25:15:00.64 e:   0.74 r=  0.77
 5: X: g  5:47:52.001 s'  5:47:52.021 e: 0.2968
    Y: g: -25:15:36.11 s': -25:15:35.99 e:   0.12 r=  0.32
 6: X: g  5:48:00.642 s'  5:48:00.657 e: 0.2234
    Y: g: -25:13:02.68 s': -25:13:02.43 e:   0.25 r=  0.33
 7: X: g  5:47:50.409 s'  5:47:50.340 e: -1.0331
    Y: g: -25:16:28.10 s': -25:16:27.09 e:   1.01 r=  1.45
 8: X: g  5:48:03.220 s'  5:48:03.242 e: 0.3358
    Y: g: -25:13:24.94 s': -25:13:25.16 e:  -0.22 r=  0.40
 9: X: g  5:47:58.646 s'  5:47:58.624 e: -0.3332
    Y: g: -25:15:45.38 s': -25:15:46.09 e:  -0.71 r=  0.78
10: X: g  5:48:05.325 s'  5:48:05.278 e: -0.7002
    Y: g: -25:16:23.70 s': -25:16:24.14 e:  -0.44 r=  0.82
11: X: g  5:47:58.643 s'  5:47:58.654 e: 0.1578
    Y: g: -25:14:19.19 s': -25:14:19.54 e:  -0.35 r=  0.38
12: X: g  5:47:58.052 s'  5:47:58.049 e: -0.0452
    Y: g: -25:14:40.84 s': -25:14:40.68 e:   0.16 r=  0.17
13: X: g  5:47:55.692 s'  5:47:55.699 e: 0.1124
    Y: g: -25:14:11.65 s': -25:14:11.73 e:  -0.08 r=  0.14
14: X: g  5:48:00.874 s'  5:48:00.900 e: 0.3842
    Y: g: -25:13:48.63 s': -25:13:48.88 e:  -0.25 r=  0.46
15: X: g  5:47:50.736 s'  5:47:50.771 e: 0.5216
    Y: g: -25:14:00.49 s': -25:14:00.01 e:   0.48 r=  0.71
16: X: g  5:48:04.903 s'  5:48:04.867 e: -0.5413
    Y: g: -25:14:59.10 s': -25:14:59.34 e:  -0.24 r=  0.59
17: X: g  5:47:56.320 s'  5:47:56.291 e: -0.4293
    Y: g: -25:16:41.41 s': -25:16:41.60 e:  -0.19 r=  0.47
18: X: g  5:48:06.261 s'  5:48:06.277 e: 0.2366
    Y: g: -25:13:42.73 s': -25:13:43.40 e:  -0.67 r=  0.71
19: X: g  5:48:02.642 s'  5:48:02.668 e: 0.3967
    Y: g: -25:14:01.79 s': -25:14:02.50 e:  -0.71 r=  0.81
19 bin hits
Rotation:  0.265123 degrees  Arcsec/pixel: -1.137909 1.137909
New center:  5:47:57.183  -25:14:39.50 (FK5)
New center:  5:45:54.897  -25:15:36.67 (FK4)
Matches in i17h.dss.fits.stars:
   1.0000  5:47:58.607 -25:12:55.88  0.00 108.0  210.8   9646  0.37  0.70
   2.0000  5:47:50.522 -25:14:22.51  0.06 204.9  134.3   3865  0.54  0.20
   3.0000  5:47:53.997 -25:15:01.38  0.36 163.7  100.9    702  0.48  0.76
   5.0000  5:47:52.001 -25:15:36.11  0.52 187.0   69.8    822  0.50  0.29
   6.0000  5:48:00.642 -25:13:02.68  0.59  84.1  204.8    546  0.46  0.32
   8.0000  5:47:50.409 -25:16:28.10  0.78 207.1   24.9    207  0.64  1.38
   9.0000  5:48:03.220 -25:13:24.94  0.79  53.2  184.8    137  0.14  0.38
  10.0000  5:47:58.646 -25:15:45.38  0.87 108.3   61.0   7773  0.54  0.77
  11.0000  5:48:05.325 -25:16:23.70  0.98  29.0   27.5    689  0.15  0.77
  12.0000  5:47:58.643 -25:14:19.19  1.17 108.0  137.0    152  0.23  0.37
  13.0000  5:47:58.052 -25:14:40.84  1.19 115.2  118.5    260  0.19  0.17
  14.0000  5:47:55.692 -25:14:11.65  1.21 143.2  143.9    788  0.15  0.13
  15.0000  5:48:00.874 -25:13:48.63  1.38  81.2  164.0    442  0.10  0.43
  18.0000  5:47:50.736 -25:14:00.49  1.78 202.0  154.2    154  0.26  0.68
  19.0000  5:48:04.903 -25:14:59.10  1.79  33.9  102.1    759  0.41  0.55
  20.0000  5:47:56.320 -25:16:41.41  1.88 136.1   12.2    237  0.26  0.43
  22.0000  5:48:06.261 -25:13:42.73  2.07  17.1  168.8    100  0.10  0.70
  24.0000  5:48:02.642 -25:14:01.79  2.45  60.1  152.0    136  0.36  0.79
  25.0000  5:47:49.058 -25:16:45.73  2.72 222.9    8.9    466  0.14  0.69
Mean dx= 0.00  dy= 0.00  dxy= 0.32  sep= 0.55
Writing i17hw.fit