http://astroa.physics.metu.edu.tr/MANUALS/sextractor/
What is SExtractor?
SExtractor (Source-Extractor) is a program that builds a catalogue of objects from an astronomical image. It is particularly oriented towards reduction of large scale galaxy-survey data, but it also performs well on moderately crowded star fields.
convert landsat_4000_2000_xy_86000_168000.png landsat_4000_2000_xy_86000_168000.fits
sextractor landsat_4000_2000_xy_86000_168000.fits
nice...
Discussion
Reäksje fan h4ck3rm1k3 op 21 augustus 2009 om 22.09 oere
## copyright 2009 james michael dupont
## AGPL 3.0
## converts the CATS results into OSM format.
## example usage :
# convert landsat_4000_2000_xy_86000_168000.png -depth 16 landsat_4000_2000_xy_86000_168000.fits
# sextractor landsat_4000_2000_xy_86000_168000.fits
# perl ./convert.pl 86000 168000 test.cat > test.osm
use strict;
use warnings;
# bottom_left
my $basex = shift @ARGV;
my $basey = shift @ARGV;
my $filename = shift @ARGV;
my $tilesize = 2000;
my $topleft = $basey - $tilesize;
my $resolution = 4000;
print '';
my $id = 0;
open IN, $filename;
while ()
{
next if /\#/;
my ($test,$X_IMAGE,$Y_IMAGE,$X2,$Y2) = split (/\s+/);
print "\n";
$id --;
# print join ("!",($NUMBER,$FLUXERR_ISO,$FLUX_AUTO,$FLUXERR_AUTO,$X_IMAGE,$Y_IMAGE,$FLAGS)) . "\n";
my $newy = ($topleft + $Y_IMAGE) / $resolution;
my $newx = ($basex + $X_IMAGE) / $resolution;
my $newy2 = ($topleft + $Y2) / $resolution;
my $newx2 = ($basex + $X2) / $resolution;
# print "Data:" . $Y_IMAGE . "/" . $X_IMAGE . "\n";
print "\n";
$id --;
print "\n";
$id --;
print "\n";
$id --;
print "\n";
$id --;
my $id1 = $id + 4;
my $id2 = $id + 3;
my $id3 = $id + 2;
my $id4 = $id + 1;
print "
";
#print $newy . "/" . $newx . "\n";
}
print "";
close IN;
Reäksje fan h4ck3rm1k3 op 21 augustus 2009 om 22.17 oere
well, of course you need to swap lat and long... doh.
Reäksje fan robert op 22 augustus 2009 om 00.05 oere
Sex Tractor?
Reäksje fan h4ck3rm1k3 op 24 augustus 2009 om 05.24 oere
LOL
Reäksje fan h4ck3rm1k3 op 24 augustus 2009 om 05.24 oere
it turns out that the coords are shifted over my 0.5 much. I need to look into this more.
Reäksje fan Milliams op 24 augustus 2009 om 22.45 oere
Oh the laughs we had when we first heard of SExtractor :)