1IMAGE2XY(1)                     astrometry.net                     IMAGE2XY(1)
2
3
4

NAME

6       image2xy - Source extractor.
7

SYNOPSIS

9       image2xy [options] fitsname.fits
10

DESCRIPTION

12       Read  a  FITS  file,  find  objects,  and  write out X, Y, FLUX to fit‐
13       sname.xy.fits.
14

OPTIONS

16       -e extension
17              Read from a single FITS extension
18
19       -O     Overwrite existing output file.
20
21       -o file
22              Write XYlist to given filename.
23
24       -L order
25              Lanczos order
26
27       -8     Don't use optimization for byte (u8) images.
28
29       -H     Downsample by a factor of 2 before running simplexy.
30
31       -d factor
32              Downsample by an integer factor before running simplexy.
33
34       -D factor
35              Downsample, if necessary, by this many factors of two.
36
37       -s scale
38              Set median-filter box size (default 100 pixels)
39
40       -w width
41              Set Gaussian PSF sigma (default 1 pixel)
42
43       -g sigma
44              Set image noise level
45
46       -p significance
47              Set significance level of peaks in sigmas (default 8 sigmas)
48
49       -a saddle
50              Set "saddle" level joining peaks i sigmas (default 5 sigmas)
51
52       -P plane
53              Pull out a single plane of a multi-color image  (default:  first
54              plane)
55
56       -b     Don't do (median-based) background subtraction
57
58       -G background
59              Subtract this 'global' background value; implies -b
60
61       -m     Set  maximum  extended  object size for deblending (default 2000
62              pixels)
63
64       -S file
65              Save background-subtracted image to this  filename  (FITS  float
66              image)
67
68       -B file
69              Save background image to filename
70
71       -U file
72              Save smoothed background-subtracted image to filename
73
74       -M file
75              Save mask image to filename
76
77       -C file
78              Save connected-components image to filename
79
80       -v     Verbose. repeat for more and more verboseness
81
82       image2xy 'file.fits[1]'
83              Process first extension.
84
85       image2xy 'file.fits[2]'
86              Process second extension
87
88       image2xy file.fits+2
89              Same as above
90

AUTHOR

92       The  Astrometry.net  team.  Principal  investigators  are David W. Hogg
93       (NYU) and Dustin Lang (CMU).
94

SEE ALSO

96       http://astrometry.net
97
98
99
1000.56                               July 2015                       IMAGE2XY(1)