IMMATCH Using the HST GSC

The verbose mode
$ > immatch -vc gsc -i 5000 testx90mwg.fits
gives more information about how the fit is going:
IMMATCH 2.5, 8 December 1998, Doug Mink, SAO
Matching catalog to FITS image file testx90mwg.fits
GSCREAD:    0 /    1:     0 /     0  /  3097 sources, region 2580.0001
GSCREAD:    0 /    1:     0 /   100  /  3097 sources, region 2580.0061
GSCREAD:    0 /    1:     0 /   200  /  3097 sources, region 2580.0125
GSCREAD:    0 /    1:     0 /   300  /  3097 sources, region 2580.0189
GSCREAD:    0 /    1:     0 /   400  /  3097 sources, region 2580.0250
GSCREAD:    0 /    1:     0 /   500  /  3097 sources, region 2580.0312
GSCREAD:    0 /    1:     0 /   600  /  3097 sources, region 2580.0371
GSCREAD:    0 /    1:     0 /   700  /  3097 sources, region 2580.0434
GSCREAD:    0 /    1:     0 /   800  /  3097 sources, region 2580.0495
GSCREAD:    0 /    1:     0 /   900  /  3097 sources, region 2580.0561
GSCREAD:    0 /    1:     0 /  1000  /  3097 sources, region 2580.0625
GSCREAD:    0 /    1:     0 /  1100  /  3097 sources, region 2580.0690
GSCREAD:    0 /    1:     0 /  1200  /  3097 sources, region 2580.0756
GSCREAD:    0 /    1:     0 /  1300  /  3097 sources, region 2580.0822
GSCREAD:    0 /    1:     0 /  1400  /  3097 sources, region 2580.0885
GSCREAD:    0 /    1:     0 /  1500  /  3097 sources, region 2580.0947
GSCREAD:    0 /    1:     0 /  1600  /  3097 sources, region 2580.1009
GSCREAD:    0 /    1:     0 /  1700  /  3097 sources, region 2580.1075
GSCREAD:    0 /    1:     0 /  1800  /  3097 sources, region 2580.1143
GSCREAD:    0 /    1:     2 /  1900  /  3097 sources, region 2580.1243
GSCREAD:    0 /    1:     2 /  2000  /  3097 sources, region 2580.1343
GSCREAD:    0 /    1:     3 /  2100  /  3097 sources, region 2580.1443
GSCREAD:    0 /    1:     4 /  2200  /  3097 sources, region 2580.1543
GSCREAD:    0 /    1:     5 /  2300  /  3097 sources, region 2580.1643
GSCREAD:    0 /    1:     7 /  2400  /  3097 sources, region 2580.1743
GSCREAD:    0 /    1:     8 /  2500  /  3097 sources, region 2580.1842
GSCREAD:    0 /    1:    10 /  2600  /  3097 sources, region 2580.1942
GSCREAD:    0 /    1:    11 /  2700  /  3097 sources, region 2580.2042
GSCREAD:    0 /    1:    11 /  2800  /  3097 sources, region 2580.2142
GSCREAD:    0 /    1:    12 /  2900  /  3097 sources, region 2580.2242
GSCREAD:    0 /    1:    13 /  3000  /  3097 sources, region 2580.2342
GSCREAD:    1 /    1:    13 /  3098  /  3097 sources from region 2580    
GSCREAD: 1 region: 13 / 3098 found
 1: (529 33) -> (528.502  33.492)  32342.0 ->   101758.2  2 -> 2    
 2: (230 196) -> (229.755 196.121)  14863.0 ->    34583.6  2 -> 2    
 3: (867 236) -> (866.525 236.374)   5132.0 ->    13175.8  2 -> 2    
 4: (900 396) -> (899.684 396.124)  17609.0 ->    39752.0  2 -> 2    
 5: (948 476) -> (947.870 475.791)  32496.0 ->    64678.8  2 -> 2    
 6: (986 507) -> (986.036 507.215)   9859.0 ->    28483.2  2 -> 2    
 7: (589 527) -> (588.850 526.586)  15763.0 ->    25958.9  2 -> 2    
 8: (284 621) -> (283.508 620.503)  32111.0 ->    51179.8  2 -> 2    
 9: (817 653) -> (817.041 653.369)  16566.0 ->    54077.0  2 -> 2    
 10: (661 661) -> (661.274 661.022)  32061.0 ->   113744.0  2 -> 2    
 11: (19 667) -> ( 18.544 666.628)   9349.0 ->    14587.1  2 -> 2    
 12: (737 763) -> (737.100 763.463)  32145.0 ->   132652.0  2 -> 2    
 13: (607 773) -> (606.972 773.048)   9847.0 ->    23895.1  2 -> 2    
 14: (209 861) -> (209.417 861.295)  29360.0 ->   114094.6  2 -> 2    
 15: (30 922) -> ( 30.226 921.724)  13624.0 ->    33853.8  2 -> 2    
 16: (961 978) -> (960.506 978.386)  32694.0 ->    70186.9  2 -> 2    
testx90mwg.fits:
IMWCS = IMWCS 1.0, 28 June 1996, Doug Mink SAO
CTYPE1 = RA---TAN
CRVAL1 = 243.98700000
CRPIX1 = 512.00000000
CTYPE2 = DEC--TAN
CRVAL2 = 31.41850000
CRPIX2 = 512.00000000
CDELT1 = -0.00017921
CROTA1 = -0.073
CDELT2 = 0.00017921
CROTA2 = 0.000
Reference pixel (512.00,512.00) 16:15:56.880 +31:25:06.60 J2000
Search at 16:15:56.880 +31:25:06.60 J2000 +- 00:00:25.779 +00:05:29.99
Image width=1024 height=1024, 0.644515 arcsec/pixel
using all 13 reference stars
gsc:
 2580.1696 16:15:49.339 +31:26:42.40 13.38  661.8  660.3
 2580.1207 16:15:45.511 +31:27:48.64 13.50  737.8  762.9
 2580.1403 16:15:34.330 +31:30:06.66 13.59  959.6  976.7
 2580.2291 16:16:08.345 +31:26:15.76 13.81  284.7  619.5
 2580.1629 16:15:55.896 +31:19:58.40 13.91  530.9   34.3
 2580.1158 16:16:12.139 +31:28:54.01 13.99  209.9  865.0
 2580.1710 16:15:56.083 +31:24:24.44 14.13  527.7  446.6
 2580.1798 16:15:34.867 +31:24:43.45 14.16  948.8  475.7
 2580.2147 16:16:21.072 +31:29:28.82 14.47   32.9  919.3
 2580.1909 16:15:37.282 +31:23:51.97 14.76  900.8  396.0
 2580.1943 16:15:41.477 +31:26:37.54 14.84  817.7  652.7
 2580.1485 16:15:52.958 +31:25:15.56 14.88  589.8  525.8
 2580.1878 16:16:10.956 +31:21:42.41 14.92  232.1  195.9
# Arcsec/Pixel: -0.645145 0.645145  Rotation: -0.072730 degrees
# Optical axis: 16:15:56.880  +31:25:06.60 J2000 at (512.00,512.00)
# Optical axis: 16:13:59.776  +31:32:29.78 B1950 at (512.00,512.00)
# 12 matches between gsc and testx90mwg.fits:
 2580.1629 16:15:55.896 +31:19:58.40 13.91  528.5   33.5  -2.15   0.50   1.65
 2580.1878 16:16:10.956 +31:21:42.41 14.92  229.8  196.1  -2.11  -0.12   1.54
 2580.1909 16:15:37.282 +31:23:51.97 14.76  899.7  396.1  -0.99  -0.10   0.73
 2580.1798 16:15:34.867 +31:24:43.45 14.16  947.9  475.8  -0.78  -0.03   0.57
 2580.1485 16:15:52.958 +31:25:15.56 14.88  588.8  526.6  -0.87  -0.51   0.81
 2580.2291 16:16:08.345 +31:26:15.76 13.81  283.5  620.5  -1.06  -0.63   0.99
 2580.1943 16:15:41.477 +31:26:37.54 14.84  817.0  653.4  -0.60  -0.46   0.64
 2580.1696 16:15:49.339 +31:26:42.40 13.38  661.3  661.0  -0.44  -0.45   0.55
 2580.1207 16:15:45.511 +31:27:48.64 13.50  737.1  763.5  -0.61  -0.35   0.56
 2580.1158 16:16:12.139 +31:28:54.01 13.99  209.4  861.3  -0.41   2.37   2.39
 2580.2147 16:16:21.072 +31:29:28.82 14.47   30.2  921.7  -2.36  -1.57   2.32
 2580.1403 16:15:34.330 +31:30:06.66 13.59  960.5  978.4   0.78  -1.07   1.21
# Mean  dx= 1.0915/1.4499  dy= -0.3127/1.4632  dxy= 1.8041
# Mean dra= -0.9669/1.2849  ddec= -0.2007/0.9435 sep= 1.1639

[immatch] [immatch Guide Star Example] [SAOimage Guide Star Example]