Table 2: Spectral log.
Slit centers   Total exposure Slit and aperture
$\alpha $ $\delta$ time (s) positions
18$^{\rm h}$01$^{\rm m}$38$^{\rm s}$ -23°10$^\prime $16 $^{\prime \prime }$ 7800 (2a) I , [-160 $^{\prime \prime }$, 24 $^{\prime \prime }$]b
18$^{\rm h}$00$^{\rm m}$44$^{\rm s}$ -23°37$^\prime $12 $^{\prime \prime }$ 3900 (1a) II , [8 $^{\prime \prime }$, 26 $^{\prime \prime }$]b
17$^{\rm h}$59$^{\rm m}$41$^{\rm s}$ -23°12$^\prime $57 $^{\prime \prime }$ 7200 (2a) III , [-92 $^{\prime \prime }$, 31 $^{\prime \prime }$]b
18$^{\rm h}$00$^{\rm m}$04$^{\rm s}$ -23°17$^\prime $29 $^{\prime \prime }$ 7200 (2a) IV , [-153 $^{\prime \prime }$, 24 $^{\prime \prime }$]b
      IVa , [-32 $^{\prime \prime }$, 22 $^{\prime \prime }$]b
18$^{\rm h}$00$^{\rm m}$59$^{\rm s}$ -23°22$^\prime $10 $^{\prime \prime }$ 7200 (2a) V , [-91 $^{\prime \prime }$, 41 $^{\prime \prime }$]b
      Va , [97 $^{\prime \prime }$, 17 $^{\prime \prime }$]b
a Number of individual frames.
b Spatial offset from slit center and extracted aperture length, both in arcsec.

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