Returned wcs header has 100s of header cards added {astrometry.net}

[Mucephie]

I'm finding that returned solved WCS headers have hundreds of header keys added. Here is an example of the cards numbers:

No.    Name      Ver    Type               Cards   Dimensions   Format
  0  PRIMARY       1     PrimaryHDU     718   (3072, 2047)   int16 (rescales to uint16)   
  1  MASK             1     ImageHDU            8   (3072, 2047)   uint8   
  2  UNCERT        1     ImageHDU            9   (3072, 2047)   float64   

An example of one of the added keys:

COMMENT   /data/INDEXES/index-5200-LITE/index-5206-46.fits                      
COMMENT Index(353):                                                             
COMMENT   /data/INDEXES/index-5200-LITE/index-5206-47.fits                      
COMMENT Field name: job.axy

It seems that this behaviour comes from this line in the monitor_submission function of the astrometryNet class

wcs = fits.Header.fromstring(wcs_response.text)

Its possible that the response text has both, the useful wcs header information, and some unneeded solve log information that then gets parsed into the header.