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HD 95410


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Acquisition and analysis of adaptive optics imaging polarimetry data
The process of data taking, reduction and calibration of near-infraredimaging polarimetry data taken with the ESO Adaptive Optics SystemADONIS is described. The ADONIS polarimetric facility is provided by arotating wire grid polarizer. Images were taken at increments of22.5(deg) of polarizer rotation from 0 to 180(deg) , over-sampling thepolarization curve but allowing the effects of photometric variations tobe assessed. Several strategies to remove the detector signature aredescribed. The instrumental polarization was determined, by observationsof stars of negligible polarization, to be 1.7% at J, H and K bands. Thelack of availability of unpolarized standard stars in the IR, inparticular which are not too bright as to saturate current IR detectors,is highlighted. The process of making polarization maps is described.Experiments at restoring polarimetry data, in order to reach diffractionlimited polarization, are outlined, with particular reference to data onthe Homunculus reflection nebula around eta Carinae.

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观测天体数据

星座:船帆座
右阿森松:11h00m07.32s
赤纬:-50°29'39.0"
视星:8.786
距离:141.243 天文距离
右阿森松适当运动:-23
赤纬适当运动:12.8
B-T magnitude:9.339
V-T magnitude:8.832

目录:
适当名称   (Edit)
HD 1989HD 95410
TYCHO-2 2000TYC 8207-208-1
USNO-A2.0USNO-A2 0375-12699015
HIPHIP 53768

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