Coordination within the remote sensing payload on the Solar Orbiter mission

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Table 1.

Main characteristics of the Solar Orbiter remote-sensing instruments.

Name (reference)	Measurements	Channel /		Wavelength/	Angular	Spectral	Typical	Allocated
		detector	FOV	energy range	resolution	resolution	cadence	TM (Gbits)
EUI (Rochus et al. 2020)	High-resolution and wide field images of the solar disc and corona in the UV / EUV.	FSI	3.8° ×3.8° square	17.4 and 30.4 nm	9″	–	10 min	53
		HRI₁₇₄	16.8′×16.8′ square	17.4 nm	1″	–	1–10 s
		HRI_Lyα	16.5′×16.5′ square	121.6 nm	1″	–	0.1–10 s

Metis (Antonucci et al. 2020)	Images of the solar corona in polarised white light and in the HI Lyman α line.	VL	1.6° −2.9° /3.4° ⁽¹⁾	580–640 nm	≤20″	–	5–30 min	27
Metis (Antonucci et al. 2020)		UV	1.6° −2.9° /3.4° ⁽¹⁾	121.6 nm	≥80″	–	5–30 min ⁽²⁾

PHI (Solanki et al. 2020)	Raw data: full-disc and high-resolution polarimetrically modulated narrow-band filtergrams; onboard processed data: continuum intensities, vector magnetic fields and line-of-sight velocities in the photosphere.	FDT	2° ×2° circular	617.3 nm	7″	0.01 nm	≥1 min	53
PHI (Solanki et al. 2020)		HRT	17.0′×17.0′ square	617.3 nm	1″	0.01 nm	≥1 min

SoloHI (Howard et al. 2020)	White light images of the extended corona.	–	40° ×38.5° square	500–850 nm	1′	–	30 min	53

SPICE (SPICE Consortium 2020)	High-resolution spectroscopy of the solar disc and corona.	SW	16′×11−14′	70–79 nm	4.2″	0.04 nm	stare 5–60 s	45
SPICE (SPICE Consortium 2020)	High-resolution spectroscopy of the solar disc and corona.	LW	16′×11−14′	97–105 nm	4.2″	0.04 nm	raster 1.5–8 h

STIX (Krucker et al. 2020)	Imaging spectroscopy of solar flare thermal and non-thermal X-rays.	–	1.9° ×2.1°	4–150 keV	7″	1–15 keV	1 s	1.8

Notes. TM allocations are per orbit. ⁽¹⁾Metis outer FOV ±2.9° square vignetted by a 3.4° circle. ⁽²⁾Metis cadence 1–20 s for fluctuation studies.

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