Table 1: Journal of WHT observations.
Date $\lambda$ -range $\Delta\lambda$ Exp. Time

(UT) (Å) (Å) (sec)

1996/08/23 3620-4400 2.5 $4\times14$ , 1200

1996/08/23 4200-4980 2.5 10, $2\times7$ , $2\times20$ , $2\times600$

1996/08/23 5200-6665 4.5 10, $2\times7$ , $2\times20$ , $2\times600$

1996/08/23 6460-7930 4.5 $4\times14$ , 1200

1997/08/10 3310-3710 1.5 $2\times1200$

1997/08/10 3710-4105 1.5 20, $2\times1200$

1997/08/10 4110-4505 1.5 20, $3\times1200$

1997/08/10 4510-4905 1.5 20, 25, 600, $4\times1200$

1997/08/10 4910-5310 1.5 10, $2\times20$ , 300, $4\times600$

1997/08/10 5220-6220 2.5 20, $2\times1200$

1997/08/10 6020-6800 2.5 10, $2\times20$ , 300, $4\times600$

1997/08/10 6770-7650 2.5 20, $3\times1200$

1997/08/10 7620-8410 2.5 20, 25, 600, $4\times1200$

1997/08/10 8370-9160 2.5 $2\times1200$

**Table 1:** Journal of WHT observations.
Date	$\lambda$ -range	$\Delta\lambda$	Exp. Time
(UT)	(Å)	(Å)	(sec)
1996/08/23	3620-4400	2.5	$4\times14$ , 1200
1996/08/23	4200-4980	2.5	10, $2\times7$ , $2\times20$ , $2\times600$
1996/08/23	5200-6665	4.5	10, $2\times7$ , $2\times20$ , $2\times600$
1996/08/23	6460-7930	4.5	$4\times14$ , 1200
1997/08/10	3310-3710	1.5	$2\times1200$
1997/08/10	3710-4105	1.5	20, $2\times1200$
1997/08/10	4110-4505	1.5	20, $3\times1200$
1997/08/10	4510-4905	1.5	20, 25, 600, $4\times1200$
1997/08/10	4910-5310	1.5	10, $2\times20$ , 300, $4\times600$
1997/08/10	5220-6220	2.5	20, $2\times1200$
1997/08/10	6020-6800	2.5	10, $2\times20$ , 300, $4\times600$
1997/08/10	6770-7650	2.5	20, $3\times1200$
1997/08/10	7620-8410	2.5	20, 25, 600, $4\times1200$
1997/08/10	8370-9160	2.5	$2\times1200$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Raman scattering features
	4 Reddening summary
	5 Physical conditions
	6 Elemental abundances
	7 The central star
	8 Summary
	References
	Online Material
	Appendix A: Emission from heavy elements (Z>30)
	Appendix B: Atomic data references