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HD 148881


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Photometric calibriation of the international Ultraviolet Explorer (IUE) for high resolution spectra
We present and discuss the high resolution absolute calibration for theSWP, LWP and LWR cameras on board IUE. The calibration was implementedin routine processing on 27 December, 1987 at VILSPA and on 30 August,1990 at GSFC. The calibration is applicable to high resolution spectraprocessed with the 'new' version of the IUE spectral image processingsoftware which was implemented in routine on 10 November, 1981 at GSFCand 11 March, 1982 at VILSPA. The high resolution calibration, for theway it is defined, is primarily determined by the efficiency of theshort or long wavelength spectrographs in the high resolution, relativeto the low resolution observing modes. This interpretation is consistentwith the high resolution calibration being the same for LWP and LWRspectra (which are obtained through the same spectrograph) and beingconstant with time. It is shown that the data extraction becomescritical for the higher orders of the IUE echelle spectrographs, causinghigh resolution calibration to depend on the data extraction algorithmused below about 1350 A in the SWP and below about 2350 A in the LWP andLWR cameras.

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观测天体数据

星座:武仙座
右阿森松:16h28m55.31s
赤纬:+48°58'31.5"
视星:8.412
距离:1265.823 天文距离
右阿森松适当运动:-10
赤纬适当运动:-21.4
B-T magnitude:9.99
V-T magnitude:8.543

目录:
适当名称   (Edit)
HD 1989HD 148881
TYCHO-2 2000TYC 3495-1451-1
USNO-A2.0USNO-A2 1350-08893189
HIPHIP 80730

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