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different RA/Dec in merged/full catalogues
05-15-2020, 11:50 (This post was last modified: 05-15-2020 12:52 by KiloHoku.)
Post: #1
different RA/Dec in merged/full catalogues
Can someone tell me why the ALPHA/DELTA coordinates in the full/merged output catalogues would be different?
For example:

full.fits
Code:
SOURCE_NUMBER 1199  ALPHA_J2000 27.5059328173692  DELTA_J2000 -6.17611204451476
merged.fits
Code:
SOURCE_NUMBER 1199  ALPHA_J2000 27.5059331537051  DELTA_J2000 -6.17611212003476

According to the manual these should both be the "calibrated" coordinates. Where does the (slight) difference in positions come from? Sad
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