First light of a holographic aperture mask: Observation at the Keck OSIRIS Imager

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Table 3.

Summary of the observations taken with HAM at Keck on the evening of April 16, 2019 (Hawaiian time).

Start (UTC)	End (UTC)	Target	Filter	N_f	t_exp (s)
06:28:52	06:36:30	90700	Hn5	50	1.476
06:39:05	06:46:42	90823	Hn5	49 ^(a)	1.476
06:49:48	06:57:26	90823	Hbb	48 ^(b)	1.476
06:58:56	07:06:47	90700	Hbb	50	1.476

Notes.

^(a)

One corrupted frame was discarded.

^(b)

Two frames with a much lower signal-to-noise were discarded.

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