Astrometric Spread Function (CoG, Paper IV)
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'The Astrometry Spread Function for 5D astrometry published in Gaia DR2. 19 SP magnitude bins with the 15 unique components of the 5x5 symmetric covariance matrix in  on HEALPix level 7 (nside=128, npix=196608). Along scan variance 16,50,84th percentiles and median AC fraction given as a function of magnitude in 218 0.1mag bins' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["Gaia space telescope, Astrometry, Scanning law"]} <|eot_id|>
 Here is the Description of a dataset. Description:'The Astrometry Spread Function for 5D astrometry published in Gaia DR2. 19 SP magnitude bins with the 15 unique components of the 5x5 symmetric covariance matrix in  on HEALPix level 7 (nside=128, npix=196608). Along scan variance 16,50,84th percentiles and median AC fraction given as a function of magnitude in 218 0.1mag bins' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
The Astrometry Spread Function for 5D astrometry published in Gaia DR2. 19 SP magnitude bins with the 15 unique components of the 5x5 symmetric covariance matrix in  on HEALPix level 7 (nside=128, npix=196608). Along scan variance 16,50,84th percentiles and median AC fraction given as a function of magnitude in 218 0.1mag bins
Gaia space telescope, Astrometry, Scanning law