Things marked in bold are changes compared to what was already in ipptopsps. Things marked EAM I would like guidance on from EAM to make sure the description is correct.

Image Flags

NEW	0x00000000	0	No relphot / relastro attempted.
PHOTOM_NOCAL	0x00000001	1	Used within relphot to mean 'don't apply fit'. | user-set value used withing relphot: ignore (EAM!)
PHOTOM_POOR	0x00000002	2	Relphot says image is bad (dMcal > limit). (EAM!)
PHOTOM_SKIP	0x00000004	4	External information image has bad photometry (EAM).
PHOTOM_FEW	0x00000008	8	Currently too few measurements for good value for photometry.
ASTROM_NOCAL	0x00000010	16	User-set value used within relastro: ignore (EAM!).
ASTROM_POOR	0x00000020	32	Relastro says image is bad (dR,dD > limit).
ASTROM_FAIL	0x00000040	64	Relastro fit diverged, fit not applied.
ASTROM_SKIP	0x00000080	128	External information image has bad astrometry. (EAM)
ASTROM_FEW	0x00000100	256	Currently too few measurements for good value for astrometry.
PHOTOM_UBERCAL	0x00000200	512	Externally-supplied photometry zero point from ubercal analysis.
ASTROM_GMM	0x00000400	1024	Image was fitted to positions corrected by the galaxy motion model.