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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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Observation and Astrometry data

Constellation:Vela
Right ascension:11h00m07.32s
Declination:-50°29'39.0"
Apparent magnitude:8.786
Distance:141.243 parsecs
Proper motion RA:-23
Proper motion Dec:12.8
B-T magnitude:9.339
V-T magnitude:8.832

Catalogs and designations:
Proper Names
HD 1989HD 95410
TYCHO-2 2000TYC 8207-208-1
USNO-A2.0USNO-A2 0375-12699015
HIPHIP 53768

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