New constraints on the dust surrounding HR 4796A | Astronomy & Astrophysics (A&A)

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Table 1

Observing log.

Date	UT start/end	Filter	DIT^a	NDIT^b	N _exp ^c	N _p ^d	t _exp ^e	τ₀^f (ms)	Seeing (″)

17-04-2013	02:24/02:50	Ks	0.35	110	2	3	231	8	0.8
16-05-2013	03:03/04:07	Ks	0.5	100	2	8	800	6	1.4
15-05-2013	02:49/03:56	L ′	0.2	120	2	10	480	3	0.6

Notes.

^(a)

Detector integration time in seconds.

^(b)

Number of DIT.

^(c)

Number of exposures per polarimetric cycle.

^(d)

Number of polarimetric cycles.

^(e)

Total exposure time per HWP position in seconds.

^(f)

Coherence time as indicated in the frame headers.

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