K2 discovery of a circumsecondary disk transiting EPIC 220208795

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Table 1

Overview of the time-series photometric instruments.

Survey	Filter	n_tel	n_phot	Baseline (days)	Start date	End date	Field of view (deg² cam⁻¹)	Pixel-scale (′′ pix⁻¹)
ASAS ^(a)	I	1–4	85	2026	27-12-2002	14-07-2008	4.8, 77.4	14.2
	V		829	7007	20-11-2000	27-01-2020
ASAS-SN	g	12	1604	1244	17-09-2017	12-02-2021	4.5	8.0
	V	8	1049	2371	02-06-2012	29-11-2018
ATLAS	c	2	356	2006	12-08-2015	07-02-2021	29.2	1.9
	o		892	1926	23-10-2015	01-02-2021
K2	K_p	1	3840	79	04-01-2016	23-03-2016	110	4.0
TESS		1	770	20	24-09-2018	14-10-2018	576	21

Notes. ^(a) In 2000 the survey upgraded to two telescopes in Chile. In 2006 two telescopes in Hawaii were added. ^(b) Centred on the traditional I_C band, but has a 600–1000 nm bandpass.

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