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← Revision 8 as of 2022-05-20 12:55:28 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| REG files are written by [[stella]]. Stella writes out a REG files for each image in which stella successfully correlates stars. REG files contain information about the pixel/line locations of stars in images and camera information. The REG file list the CX VY CZ that you solved for, the predicted CX CY CZ, and then lists information for each star on a separate line. The REG files are used by [[distortion]] to compute an updated camera model, which can then be used in INIT_LITHOS and make_sumfiles.txt. REG files live in the REGFILES directory, which is parallel to LMKFILES, SUMFILES, etc. They are meant to be a shortcut toward a poor man's aperture photometry to assess radiometric response. | REG files are written by [[stella]]. Stella writes out a REG files for each image in which stella successfully correlates stars. REG files contain information about the pixel/line locations of stars in images and camera information. The REG file list the CX CY CZ that you solved for, the predicted CX CY CZ, and then lists information for each star on a separate line. The REG files are used by [[distortion]] to compute an updated camera model, which can then be used in INIT_LITHOS and make_sumfiles.txt. REG files live in the REGFILES directory, which is parallel to LMKFILES, SUMFILES, etc. |
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| Stella names MAG files as PICNAME.REG. | If a .REG file already exists, stella will use that information as a starting point when you re-run stella. If you want to start an image totally afresh, you must delete the pre-existing .REG file. |
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| == An annotated .MAG file == | Warning! If you have an existing REG file and then re-run the image through stella and do NOT solve for pointing, stella will delete the existing REG file! Stella names REG files as PICNAME.REG. == An annotated .REG file == |
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| catno corr sum dn mag --> the columns are the number of the star in the catalog (same as the number in TEMPFILE.ppm --> the correlation score for that star, the total number of DN summed over an circle with radius 150632 0.883 362528 9.500 --> qsize (the final parameter in the stella inputs), and the stellar magnitude. 150692 0.879 285433 9.820 150182 0.905 366901 9.820 151042 0.951 341694 9.910 150068 0.915 203637 10.300 150234 0.912 196155 10.340 151380 0.953 203285 10.350 150010 0.964 188350 10.390 151014 0.933 214639 10.390 150122 0.935 200106 10.410 151432 0.927 190317 10.450 150482 0.947 210444 10.460 150758 0.903 180699 10.460 150154 0.954 159825 10.530 150248 0.858 199390 10.630 150080 0.901 165230 10.790 151240 0.968 165286 10.860 150764 0.842 161857 10.870 150426 0.946 142003 10.880 150522 0.899 187723 10.910 150744 0.920 101989 10.920 150912 0.925 148504 10.960 150940 0.931 141451 10.990 151066 0.870 138391 11.020 150686 0.890 130369 11.110 150350 0.856 108177 11.160 150820 0.960 130938 11.180 150678 0.943 118386 11.190 151216 0.918 106825 11.200 150798 0.928 127300 11.230 150626 0.859 107775 11.260 150514 0.900 114116 11.300 150720 0.901 99973 11.360 151368 0.912 97339 11.420 151224 0.941 116083 11.440 150494 0.933 83160 11.450 150258 0.904 113108 11.460 151284 0.930 95273 11.460 END 1.1400 0.9158 38 --> the PSF used for the Gaussian, something, and then the number of stars in the file. |
-0.9303361 -0.1242768 0.3450073 -0.9302355 -0.1243779 0.3452419 Cx, C0x --> The solved-for Cx and the predicted Cx. 0.3498056 -0.5830977 0.7332347 0.3500547 -0.5830538 0.7331507 Cy, C0y --> The solved-for Cy and the predicted Cy. 0.1100489 0.8028402 0.5859496 0.1101069 0.8028564 0.5859164 Cz, C0z --> The solved-for Cz and the predicted Cz. 0.1078023 0.8029705 0.5861886 1005.233 696.014 -0.092 0.073 150822 W PX LN dx dy catno --> each line in this section of the REG file . corresponds to a star. The columns are . a unit vector to the star (first three columns), . the pixel/line location of the star in the image . (next two columns), and then the pixel/line residuals etc., one line in the file for each star that correlated in the image for the star (next two columns), and star catalog number (last column) END 39 -0.014 0.067 -0.266 0.316 2628.33430 --> The last line of the file says how many stars exceeded the correlation limit (39, in this case). The next three numbers are the rotation about the X, Y, and Z axes in units of milliradians. The Z-axis rotation is a twist. The second-to-last entry is the RMS pixel residual between predicted and observed star locations. The last term is the focal length in mm solved from this image. |
REG Files
Category DART |
Version 1.0 |
Description
REG files are written by stella. Stella writes out a REG files for each image in which stella successfully correlates stars. REG files contain information about the pixel/line locations of stars in images and camera information. The REG file list the CX CY CZ that you solved for, the predicted CX CY CZ, and then lists information for each star on a separate line. The REG files are used by distortion to compute an updated camera model, which can then be used in INIT_LITHOS and make_sumfiles.txt. REG files live in the REGFILES directory, which is parallel to LMKFILES, SUMFILES, etc.
If a .REG file already exists, stella will use that information as a starting point when you re-run stella. If you want to start an image totally afresh, you must delete the pre-existing .REG file.
Warning! If you have an existing REG file and then re-run the image through stella and do NOT solve for pointing, stella will delete the existing REG file!
Stella names REG files as PICNAME.REG.
An annotated .REG file
-0.9303361 -0.1242768 0.3450073 -0.9302355 -0.1243779 0.3452419 Cx, C0x --> The solved-for Cx and the predicted Cx.
0.3498056 -0.5830977 0.7332347 0.3500547 -0.5830538 0.7331507 Cy, C0y --> The solved-for Cy and the predicted Cy.
0.1100489 0.8028402 0.5859496 0.1101069 0.8028564 0.5859164 Cz, C0z --> The solved-for Cz and the predicted Cz.
0.1078023 0.8029705 0.5861886 1005.233 696.014 -0.092 0.073 150822 W PX LN dx dy catno --> each line in this section of the REG file
. corresponds to a star. The columns are
. a unit vector to the star (first three columns),
. the pixel/line location of the star in the image
. (next two columns), and then the pixel/line residuals
etc., one line in the file for each star that correlated in the image for the star (next two columns), and star catalog number (last column)
END 39 -0.014 0.067 -0.266 0.316 2628.33430 --> The last line of the file says how many stars exceeded
the correlation limit (39, in this case). The next three
numbers are the rotation about the X, Y, and Z axes in units
of milliradians. The Z-axis rotation is a twist.
The second-to-last entry is the RMS pixel residual between
predicted and observed star locations.
The last term is the focal length in mm solved from this image.