Not extracting sources

[Lydia Makrygianni]

Hi,

I have an issue with astrometry-net version 0.91. I am trying to solve an image however I get this

Reading input file 1 of 1: "/Users/lydiamakrygianni/Documents/lcogtsnpipe/snexdata_target6919/tfn1m001-fa11-20210801-0425-e91.fits"...

cairoutils.c:715:cairoutils_read_ppm_stream: Netpbm is not available; can't read PPM images

cairoutils.c:715:cairoutils_read_ppm_stream: Netpbm is not available; can't read PPM images

cairoutils.c:715:cairoutils_read_ppm_stream: Netpbm is not available; can't read PPM images

cairoutils.c:715:cairoutils_read_ppm_stream: Netpbm is not available; can't read PPM images

libpng warning: Image width is zero in IHDR

libpng warning: Image height is zero in IHDR

libpng error: Invalid IHDR data

sh: line 1:  3322 Done                    bin/plotxy -I /tmp/tmp.ppm.T1h9Jy -i /Users/lydiamakrygianni/Documents/lcogtsnpipe/snexdata_target6919/tfn1m001-fa11-20210801-0425-e91.axy -C red -w 2 -N 50 -x 1 -y 1 -P

      3323 Abort trap: 6           | bin/plotxy -i /Users/lydiamakrygianni/Documents/lcogtsnpipe/snexdata_target6919/tfn1m001-fa11-20210801-0425-e91.axy -I - -w 2 -r 3 -C red -n 50 -N 200 -x 1 -y 1 > /Users/lydiamakrygianni/Documents/lcogtsnpipe/snexdata_target6919/tfn1m001-fa11-20210801-0425-e91-objs.png

Solving...

Reading file "/Users/lydiamakrygianni/Documents/lcogtsnpipe/snexdata_target6919/tfn1m001-fa11-20210801-0425-e91.axy"...

Field 1 did not solve (index index-4208.fits, field objects 1-10).

Field 1 did not solve (index index-4207-11.fits, field objects 1-10).

Whereas for other similar images and for the example I get the "extracting sources..." line.

Do you know what might happen?

Thank you,

Lydia

[Dustin Lang]

Hi,

Like the error message says, the Netpbm package, which is required, wasn't found when the code was compiled.

After installing netpbm, you can do a "make reconfig" to make it re-search for the Netpbm package, if you have it installed, and then re-run "make" and "make install".

cheers,

dustin

[Lydia Makrygianni]

Hi,

Thank you for your reply! I'll do this however I doubt this is the issue as I get the same warning when solving the examples but I do get a solution.

Cheers,

Lydia

[Lydia Makrygianni]

Still the same issue when netpbm is not the issue. First lines for image solved OK 

$ /usr/local/astrometry/bin/solve-field /home/lmakrygianni/tfn1m001-fa11-20210801-0423-e91.fits --no-verify

Reading input file 1 of 1: "/home/lmakrygianni/tfn1m001-fa11-20210801-0423-e91.fits"...

Extracting sources...

simplexy: found 1492 sources.

Solving...

First lines of image not solved:

/usr/local/astrometry/bin/solve-field /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits  --width 4069 --height 4069 --use-sextractor --overwrite

Reading input file 1 of 1: "/home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits"...

(null): EOF / read error reading magic number

(null): EOF / read error reading magic number

solve-field.c:326:plot_source_overlay Plotting command failed

 solve-field.c:132:run_command Command was: "/usr/local/astrometry/bin/plotxy -I /tmp/tmp.ppm.Sv8ULC -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -C red -w 2 -N 50 -x 1 -y 1 -P | /usr/local/astrometry/bin/plotxy -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -I - -w 2 -r 3 -C red -n 50 -N 200 -x 1 -y 1 > /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91-objs.png"

 solve-field.c:131:run_command Command exited with exit status 1

Solving...

[Lydia Makrygianni]

First lines of the not solved image using -v in command line

/usr/local/astrometry/bin/solve-field /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits  --width 4069 --height 4069 --use-sextractor --overwrite --no-verify -v

Reading input file 1 of 1: "/home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits"...

Base: "/home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91", basefile "tfn1m001-fa11-20210801-0425-e91.fits", basedir "/home/lmakrygianni", suffix "fits"

Checking if file "/home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits" ext 0 is xylist or image: xyls

Removing lines of (spurious) sources from xylist "/home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits", writing to "/tmp/tmp.removelines.9ZQIRs"

Running: /usr/local/astrometry/bin/removelines /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits /tmp/tmp.removelines.9ZQIRs

removelines.py: Removed 0 sources

Running: /usr/local/astrometry/bin/uniformize -n 10 /tmp/tmp.removelines.9ZQIRs /tmp/tmp.uniform.Sgboer

Uniformizing into 3 x 3 bins

Image bounds: x [5.9134,4079.02], y [43.7204,4060.02]

Writing headers to file /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy

Copying data block of file /tmp/tmp.uniform.Sgboer to output /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy.

Deleting temp file /tmp/tmp.removelines.9ZQIRs

Deleting temp file /tmp/tmp.uniform.Sgboer

Running: /usr/local/astrometry/bin/plotxy -I /tmp/tmp.ppm.QVqgHw -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -C red -w 2 -N 50 -x 1 -y 1 -P | /usr/local/astrometry/bin/plotxy -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -I - -w 2 -r 3 -C red -n 50 -N 200 -x 1 -y 1 > /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91-objs.png

(null): EOF / read error reading magic number

(null): EOF / read error reading magic number

solve-field.c:326:plot_source_overlay Plotting command failed

 solve-field.c:132:run_command Command was: "/usr/local/astrometry/bin/plotxy -I /tmp/tmp.ppm.QVqgHw -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -C red -w 2 -N 50 -x 1 -y 1 -P | /usr/local/astrometry/bin/plotxy -i /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.axy -I - -w 2 -r 3 -C red -n 50 -N 200 -x 1 -y 1 > /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91-objs.png"

 solve-field.c:131:run_command Command exited with exit status 1

Solving...

[Dustin Lang]

Hi,

That looks weird.  What kind of file is /home/lmakrygianni/tfn1m001-fa11-20210801-0425-e91.fits .  Is it an image?  It looks like solve-field thinks it is a FITS *table* of X,Y star positions.

But then plotxy is failing to read it -- my guess is there's something weird about that file.

You can turn off plots with --no-plots, but that shouldn't really matter, it should continue on and solve the field if possible.

If you can post that file, or, eg, upload it to nova.astrometry.net, I may be able to comment further.

cheers,

dustin

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[Dustin Lang]

PS, netpbm is absolutely required to read jpeg/png images, but not FITS images.

[Lydia Makrygianni]

Hi,

It's a fits image which seems normal in terms of opening it with ds9. I uploaded it on nova.astrometry.net, and for some reason, it was solved there. It's Job 7113474.

If you figure out what's wrong or different with the online solution. please let me know.

Thanks,

Lydia

[Dustin Lang]

Hi,

Okay, so what's happening is, the code is trying to figure out if your FITS file is a FITS image, or a FITS table of source positions.  Since you files have a table HDU containing "x" and "y" columns, it thinks it's a table of source positions, and tries to read that.  You can add the "--fits-image" argument to your solve-field command to tell it that it should treat your file as an image.

cheers,

dustin

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[Lydia Makrygianni]

Hi Dustin,

Thank you very much! This solved the issue!

Cheers,

Lydia