First release of Apertif imaging survey data | Astronomy & Astrophysics (A&A)

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Table A.3

Overview of the imaging early science fields

Field		Flux calibrator		Polarization calibrator
Name	ObsID	Name	ObsIDs	Name	ObsIDs	Freq MHz	DT^a	Notes
1530+29	190419137	3C147	190419097 136	3C138	190420001-40	1250–1550	N	RTC&RTD bad
1530+29	190424047	3C147	190424007 46			1250–1550	N	RTC&RTD bad
LH_WSRT	190428055	3C147	190428016 54	3C286	190429001-40	1250–1550	N
LH_WSRT	190505048	3C147	190505008 47	3C286	190506001-40	1220–1520	N
M31	190511013	3C147	190512001 40	3C286	190510107-190511012	1220–1520	N
M1403+53	190511014	3C147	190512001 40	3C286	190510107-190511012	1220–1520	N
LH_GRG	190601059	3C147	190601019 58			1220–1520	N
LH_GRG	190602049	3C147	190602009 48	3C286	190602050-190603031	1130–1430	N
M1403+53	190608061	3C147	190609001 40	3C138	190608021 60	1220–1520	N	no RTD; delay center offset = [0.33,0]
M81	190609041	3C48	190610001 40	3C138	190610041-80	1220–1520	N	no RTD
M81_offset2	190610081	3C48	190610001 40	3C138	190610041-80	1220–1520	N	no RTD
S2258+29	190629059	3C147	190629018 57	3C138	190630001-40	1130–1430	Y
S1349+26	190630041	3C147	190701001 41	3C138	190630001-40	1130–1430	Y
M0142+31	190701001	3C147	190701002 41	3C138	190630001-40	1130–1430	Y

Notes. ^aWhether online delay tracking (DT) was active or not.

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