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Table 1.

Number of investigated light curves and basic parameters of used public surveys and observatories.

Survey Location Instrument configuration Band No. of
light curves
MEarth Mount Hopkins, USA 8 × Apogee U42 RG715, Ia 184
ASAS Las Cumbres, Chile Apogee AP10 V 174
SuperWASP Roque de los Muchachos, Spain 8 × Andor DW436 Clear, Broadb 89
Sutherland, South Africa Broadb
NSVS Los Álamos, USA 4 × Apogee AP10 Clearc 86
Catalina Mt. Lemmon/Mt. Bigelow, USA Variabled VCSSd 37
ASAS-SN Worldwidee FLI ProLine PL230 V 14
K2 (Earth-trailing heliocentric orbit) 0.95 m Kepler + 42 × CCD Clear 13
AstroLAB IRIS Zillebeke, Belgium 0.68 m Keller + SBIG STL-6303E B,  V 7
Montcabrer Cabrils, Spain 0.30 m Meade LX200 + SBIG ST-8XME R,  I 6
HATNet Mt. Hopkins, USA 5 + 2 × Apogee AP10f RC,  IC 5
Mauna Kea, USA
Montsec San Esteban de la Sarga, Spain 0.80 m Joan Oró + MEIA2g RC 4
Carda Villaviciosa, Spain 0.20 m Celestron SC 8″ + SBIG ST-7E Clear 3
Total 622
(a)

Notes. MEarth: broad 715 nm long-pass filter in first (2008–2010) and third seasons (2011+), custom-made I715 − 895 interference filter in second season (2010–2011).

(b)

SuperWASP: from 2006 onwards a broad-band filter was installed with a passband from 400 to 700 nm.

(c)

NSVS: unfiltered optical response 450–1000 nm, effective wavelength of R band.

(d)

Catalina: see Christensen et al. (2015) for the latest camera configurations.

(e)

ASAS-SN: the network consists of 20 telescopes, distributed among five units in Hawai’i and Texas in the USA, two sites in Chile, and South Africa.

(f)

HATNet: see Bakos (2018) for the latest camera configurations.

(g)

Montsec: the MEIA2 instrument at the Telescopi Joan Oró on the Observatori Astronomic del Montsec consists of a camera iKon-L with an Andor CCD42-40 chip and a Custom Scientific filter wheel.

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