Contamination of spectroscopic observations by satellite constellations

Open Access

Table 4

Equivalent widths for the contaminated V = 18.2 quasar.

Exp.	Sat.	S/N	Eq. width.
t.	Eff.		139.376 nm		140.277 nm
(s)	Mag.		(mÅ)	Prop.	(mÅ)	Prop.
Contaminated
105	17.81	4.97	106.0	0.510	77.4	0.599
420	19.31	7.41	166.1	0.800	106.7	0.825
1680	20.82	14.89	191.2	0.921	119.5	0.925
Not contaminated
1680	–	20.66	207.6	1	129.2	1

Notes. Exp.t. is the exposure time in seconds; Sat.Eff.Mag. the satellite effective magnitude (for a contaminating satellite with V = 6 moving at 25° min⁻¹); S/N is the measured signal-to-noise ratio; next columns list the equivalent widths and proportion to the uncontaminated case.

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