Very high precision orbit of Capella by long baseline interferometry

Hummel, C. A.; Armstrong, J. T.; Quirrenbach, A.; Buscher, David F.; Mozurkewich, D.; Elias, N. M.; Wilson, R. E.

doi:10.1086/116995

Cited by 83 publications

(94 citation statements)

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“…11, overlaid on the orbit as measured by long-baseline interferometry. 22 The difference between the measured separation and the expected separation at the time of the observation was 0.0012 arc sec (excluding the possibility that the measurements disagree by 180 deg). This disagreement is considerably smaller than the semimajor axis of the binary orbit, 0.05 arc sec, and than the diffraction limit of the telescope, 0.03 arc sec.…”

Section: Capella Observationsmentioning

confidence: 85%

Imaging through turbulence with a quadrature-phase optical interferometer

et al. 2005

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We present an improved technique for imaging through turbulence at visible wavelengths using a rotation shearing pupil-plane interferometer, intended for astronomical and terrestrial imaging applications. While previous astronomical rotation shearing interferometers have made only visibility modulus measurements, this interferometer makes four simultaneous measurements on each interferometric baseline, with phase differences of ͞2 between each measurement, allowing complex visibility measurements (modulus and phase) across the entire input pupil in a single exposure. This technique offers excellent wavefront resolution, allowing operation at visible wavelengths on large apertures, is potentially immune to amplitude fluctuations (scintillation), and may offer superior calibration capabilities to other imaging techniques. The interferometer has been tested in the laboratory under weakly aberrating conditions and at Palomar Observatory under ordinary astronomical observing conditions. This research is based partly on observations obtained at the Hale Telescope.

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Section: Capella Observationsmentioning

confidence: 85%

Imaging through turbulence with a quadrature-phase optical interferometer

et al. 2005

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“…Wilson, were used to further refine the period (Hummel et al 1994). This, coupled with the superior data from LBOI has given this orbit staying power.…”

Section: Lboimentioning

confidence: 99%

Classical Observations of Visual Binary and Multiple Stars

Mason

2006

Proc. IAU

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Abstract. Changes in the double star database are highlighted, describing various methods of observation (both historically and those of the past few years) and their effectiveness in different regimes of separation space. The various niches for wide-and narrow-field work as they apply to double and multiple stars are examined and the different types of information which each can provide are described. Despite the significant growth of the double star database, much can still be done, such as finding lost pairs, filling in missing parameters so that observing programs can select all stars appropriate to their capabilities, or providing at least gross kinematic descriptions. After more than 20 years of successful work, speckle interferometry and conventional CCD astrometry have replaced filar micrometry and photography as preferred classical techniques. Indeed, most work in filar micrometry is now being done by amateurs. Work on pairs described as neglected in the last major WDS data release (2001) is given as a specific example. Finally, the continued need to publish data in classical double star parameters is also discussed.

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“…The orbit of Capella has been determined by other interferometric measurements, and is described in Hummel et al (1994). A plot of the orbit of Capella, as determined by Hummel et al (1994), is shown in Fig.…”

Section: Qpi Observational Effort: Capellamentioning

confidence: 99%

“…A plot of the orbit of Capella, as determined by Hummel et al (1994), is shown in Fig. 7, with the position determined by the QPI measurements overiaid.…”

Section: Qpi Observational Effort: Capellamentioning

confidence: 99%

Three-Dimensional Structure of Turbulent Scalar Fields With Applications in Aerooptics

Dimotakis¹,

Martin²

2003

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Very high precision orbit of Capella by long baseline interferometry

Cited by 83 publications

References 0 publications

Imaging through turbulence with a quadrature-phase optical interferometer

Imaging through turbulence with a quadrature-phase optical interferometer

Classical Observations of Visual Binary and Multiple Stars

Three-Dimensional Structure of Turbulent Scalar Fields With Applications in Aerooptics

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