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Star Tracking
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Capture pictures.
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Downsample the image to maximum 512x512 using the image magick covert tool. Experiment with different resolutions to see how it affects the processing time and results.
convert --resample 512x512 image.jpg
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Create a directory for the pictures on irvine-01. On Irvine-01:
mkdir /data/capture
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scp the pictures to the directory that was created. On dev machine or gateway:
scp *.jpg irvine-01:/data/capture
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run solve-field.sh on the images. solve-field.sh is located in /usr/local/bin and should be in your PATH. On irvine-01:
cd /data/capture; solve-field.sh *.jpg
Example execution for all *.jpg files in a directory:
# solve-field.sh --overwrite *.jpg
Reading input file 1 of 3: "IMG_7946_sm.jpg"...
jpegtopnm: WRITING PPM FILE
Read file stdin: 512 x 341 pixels x 1 color(s); maxval 255
Using 8-bit output
Extracting sources...
simplexy: found 419 sources.
Solving...
Reading file "./IMG_7946_sm.axy"...
Field 1 did not solve (index index-19.fit, field objects 1-10).
Field 1 did not solve (index index-18.fit, field objects 1-10).
log-odds ratio 133 (5.77084e+57), 23 match, 0 conflict, 22 distractors, 27 index.
RA,Dec = (12.5559,57.0122), pixel scale 175.588 arcsec/pix.
Hit/miss: Hit/miss: ++++++-+++++-+--+--++--+--++---++-++--------+ (best)-------------------------------------------------------
Field 1: solved with index index-17.fit.
Field 1 solved: writing to file ./IMG_7946_sm.solved to indicate this.
Field: IMG_7946_sm.jpg
Field center: (RA,Dec) = (12.675635, 56.984883) deg.
Field center: (RA H:M:S, Dec D:M:S) = (00:50:42.152, +56:59:05.580).
Field size: 24.627 x 16.5563 degrees
Field rotation angle: up is 62.341 degrees E of N
Creating new FITS file "./IMG_7946_sm.new"...
Reading input file 2 of 3: "IMG_7963_sm.jpg"...
jpegtopnm: WRITING PPM FILE
Read file stdin: 512 x 341 pixels x 1 color(s); maxval 255
Using 8-bit output
Extracting sources...
simplexy: found 338 sources.
Solving...
Reading file "./IMG_7963_sm.axy"...
Field 1 did not solve (index index-19.fit, field objects 1-10).
Field 1 did not solve (index index-18.fit, field objects 1-10).
log-odds ratio 94.8195 (1.51204e+41), 23 match, 1 conflict, 78 distractors, 33 index.
RA,Dec = (82.459,1.59636), pixel scale 175.816 arcsec/pix.
Hit/miss: Hit/miss: +-++-+---+-++--++--+---+-+-----+--------+----+-------+-------+--+c---+----+----------------------+-+
Field 1: solved with index index-17.fit.
Field 1 solved: writing to file ./IMG_7963_sm.solved to indicate this.
Field: IMG_7963_sm.jpg
Field center: (RA,Dec) = (82.463263, 1.575915) deg.
Field center: (RA H:M:S, Dec D:M:S) = (05:29:51.183, +01:34:33.295).
Field size: 24.6486 x 16.5373 degrees
Field rotation angle: up is 125.59 degrees E of N
Creating new FITS file "./IMG_7963_sm.new"...
Reading input file 3 of 3: "IMG_7964_sm.jpg"...
jpegtopnm: WRITING PPM FILE
Read file stdin: 512 x 341 pixels x 1 color(s); maxval 255
Using 8-bit output
Extracting sources...
simplexy: found 503 sources.
Solving...
Reading file "./IMG_7964_sm.axy"...
Field 1 did not solve (index index-19.fit, field objects 1-10).
log-odds ratio 68.4712 (5.45327e+29), 11 match, 0 conflict, 29 distractors, 14 index.
RA,Dec = (78.4466,38.8944), pixel scale 175.686 arcsec/pix.
Hit/miss: Hit/miss: ++++++----+----+------++---------------+ (best)------------------------------------------------------------
Field 1: solved with index index-18.fit.
Field 1 solved: writing to file ./IMG_7964_sm.solved to indicate this.
Field: IMG_7964_sm.jpg
Field center: (RA,Dec) = (78.458223, 38.827510) deg.
Field center: (RA H:M:S, Dec D:M:S) = (05:13:49.974, +38:49:39.037).
Field size: 24.5732 x 16.5107 degrees
Field rotation angle: up is 82.9644 degrees E of N
Creating new FITS file "./IMG_7964_sm.new"...