Balloon at Bamberg

Time-resolved high-resolution spectroscopy
of the bright sdBV Balloon090100001
John Telting et al., Bamberg, July 2007

-5	-1	+1	+5
page 08

New high-res spectroscopy of Balloon

obs date 2006 Aug 03 Aug 04 Oct 23 Nov 09 Dec 25 Dec 26 total

# spectra 385 457 255 170 84 255 ∼ 1600

Telescope 2.6m Nordic Optical Telescope

Instrument FIES Echelle with low-res fiber

Resolution R = 25000

FWHM = 12km/s

Gaussian broadening σ = 5 km/s

Exposure time 30 sec (main period Balloon 356 s)

Cycle time 43 sec

CCD read mode dual A & B amplifier

Binning 3x2 (spatial x spectral)

S/N per spectrum ~ 10

S/N average spectrum ~ 180 (August spectra)

Apparent frequency f1 2.80743 - 2.80744 mHz

Radial-velocity amplitude f1 15 km/s (Aug/2006)

obs date 2006	Aug 03	Aug 04	Oct 23	Nov 09	Dec 25	Dec 26	total
# spectra	385	457	255	170	84	255	∼ 1600

Telescope	2.6m Nordic Optical Telescope
Instrument	FIES Echelle with low-res fiber

Resolution	R = 25000
	FWHM = 12km/s
	Gaussian broadening σ = 5 km/s

Exposure time	30 sec (main period Balloon 356 s)
Cycle time	43 sec
CCD read mode	dual A & B amplifier
Binning	3x2 (spatial x spectral)

S/N per spectrum	~ 10
S/N average spectrum	~ 180 (August spectra)

Apparent frequency f1	2.80743 - 2.80744 mHz
Radial-velocity amplitude f1	15 km/s (Aug/2006)