Table 1: Journal of spectral observations of HS 0837+4717.
Telescope Date Exposure Wavelength Dispersion Seeing Airmass PA

time [s] Range [Å] [Å/pixel] [arcsec] [degree]

(1) (2) (3) (4) (5) (6) (7) (8)

MMT 01.05.1997 $2 \times 1200$ 3600-8300 1.9 1.6 1.13 16

BTA 19.02.2002 $2 \times 1800$ 3700-6100 2.4 2.2 1.27 44

BTA 19.02.2002 $2 \times 1800$ 6000-7200 1.2 1.3 1.15 44 130

**Table 1:** Journal of spectral observations of HS 0837+4717.
Telescope	Date	Exposure	Wavelength	Dispersion	Seeing	Airmass	PA
		time [s]	Range [Å]	[Å/pixel]	[arcsec]		[degree]
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
MMT	01.05.1997	$2 \times 1200$	3600-8300	1.9	1.6	1.13	16
BTA	19.02.2002	$2 \times 1800$	3700-6100	2.4	2.2	1.27	44
BTA	19.02.2002	$2 \times 1800$	6000-7200	1.2	1.3	1.15	44 130

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