Ionization structure and chemical abundances of the Wolf-Rayet nebula NGC 6888 with integral field spectroscopy

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Table 2

NGC 6888 PPAK observational log.

Zone	Coordinates (J2000)	Grating	Spectral range	Exp. time	Airmass	Date	Comments
	(α, δ)		(Å)	(s)

X-ray zone (1)	(20:12:39.8, +38:25:34.5)	V300	3640 − 7040	1350	1.00	July, 5
		R1200	6200−6870	1440 (4320^†)	1.02	July, 1	dithering ( × 3)
		R1200	4320−5060	1620 (4860^†)	1.03	July, 2	dithering ( × 3)
		V1200	3660−4430	1620 (4860^†)	1.02	July, 4	dithering ( × 3)^a
Edge (2)	(20:11:30.7, +38:22:38.2)	V300	3640−7040	1350	1.01	July, 5
		R1200	6200−6870	1620	1.00	July, 1
		R1200	4320−5060	1620	1.00	July, 2
Mini-bubble (3)	(20:12:29.0, +38:28:39.0)	V300	3640−7040	1350	1.00	July, 6
Bullet (4)	(20:12:09.6, +38:20:14.9)	V300	3640−7040	1350	1.00	July, 6

Notes.

^(†)

Total time including the three dithered exposures.

^(a)

One of these dithering positions suffers from dome-lamp contamination. Only two of the three exposures are useful.

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