Academic literature on the topic 'Astrometric – instrumentation: detectors'

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Journal articles on the topic "Astrometric – instrumentation: detectors"

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Hemenway, P. D. "The Use of the Hubble Space Telescope for Global Reference Frame Work." Highlights of Astronomy 7 (1986): 87–88. http://dx.doi.org/10.1017/s1539299600006250.

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The Hubble Space Telescope (HST) will have the capability of making relative astrometric measurements with an accuracy of four to ten times better than similar ground based measurements. The instruments of choice will be the Fine Guidance Sensors (FGS’s). Details of the instrumentation have been given elsewhere (c.f. Jefferys, 1980). Each FGS consists of two interferometer detectors which look at a small aperture located within a larger field of view (FOV). The raw data consist of encoder readings, from “star selectors”, and error signals derived from the interferometer transfer functions. The
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Mendigutía, I., R. D. Oudmaijer, P. C. Schneider, N. Huélamo, D. Baines, S. D. Brittain та M. Aberasturi. "Spectro-astrometry of the pre-transitional star LkCa 15 does not reveal an accreting planet but extended Hα emission". Astronomy & Astrophysics 618 (жовтень 2018): L9. http://dx.doi.org/10.1051/0004-6361/201834233.

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Context. The detection of forming planets in protoplanetary disks around young stars remains elusive, and state-of-the-art observational techniques provide somewhat ambiguous results. The pre-transitional T Tauri star LkCa 15 is an excellent example. It has been reported that it could host three planets; candidate planet b is in the process of formation, as inferred from its Hα emission. However, a more recent work casts doubts on the planetary nature of the previous detections. Aims. We test the potential of spectro-astrometry in Hα as an alternative observational technique to detect forming
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Stone, Ronald C. "Recent Advances with the USNO (Flagstaff) Transit Telescope." Symposium - International Astronomical Union 156 (1993): 65–70. http://dx.doi.org/10.1017/s0074180900172948.

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The Flagstaff Astrometric Scanning Transit Telescope (FASTT) has been equipped with a new CCD detector, and further improvements in instrumentation have been made. An evaluation of its performance indicates that the telescope can determine accurate star positions, tied into the VLBI/VLA extragalactic reference frame, for stars as faint as V ∼ 17.5 mag. With further improvements, it is hoped this accuracy can be improved. A special scanning technique for stars at high declinations has been developed that allows scanning up to the pole. Positions tied into the extragalactic reference frame for F
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Dissertations / Theses on the topic "Astrometric – instrumentation: detectors"

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Toyozumi, Hiroyuki Physics Faculty of Science UNSW. "The intra-pixel sensitivity variation of a CCD." Awarded by:University of New South Wales. School of Physics, 2005. http://handle.unsw.edu.au/1959.4/25995.

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The effect of Intra-pixel sensitivity variation (IPSV) in charge-coupled devices (CCDs) can be important in astronomical applications. This thesis studies the IPSV in a front-illuminated three-phase EEV05-20 CCD used in the Automated Patrol Telescope (APT), from multiple points of view. To explore the detailed sensitivity variation within pixels, the CCD was scanned using a 4 \mu meter diameter light beam in four colour bands: B, V, R and I. The resulting images clearly show the IPSVs due to the CCD electrode structure, and its dependence on wavelength. Unexpected ghost images appear in the s
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Conference papers on the topic "Astrometric – instrumentation: detectors"

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Shaklan, Stuart B., and Steven H. Pravdo. "Astrometric calibration of array detectors." In 1994 Symposium on Astronomical Telescopes & Instrumentation for the 21st Century, edited by David L. Crawford and Eric R. Craine. SPIE, 1994. http://dx.doi.org/10.1117/12.176810.

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Dorland, Bryan N., Scott D. Johnson, and Augustyn Waczynski. "Effects of radiation damage on astrometric CCDs: comparison of STA700 and e2v Model 43 detectors." In SPIE Astronomical Telescopes + Instrumentation, edited by James D. Garnett and James W. Beletic. SPIE, 2004. http://dx.doi.org/10.1117/12.551031.

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Kozhurina-Platais, Vera, John Mackenty, David Golimovski, Marco Sirianni, David Borncamp, Jay Anderson, and Norman Grogin. "Distortion of the pixel grid in HST WFC3/UVIS and ACS/WFC CCD detectors and its astrometric correction." In SPIE Astronomical Telescopes + Instrumentation, edited by Howard A. MacEwen, Giovanni G. Fazio, Makenzie Lystrup, Natalie Batalha, Nicholas Siegler, and Edward C. Tong. SPIE, 2016. http://dx.doi.org/10.1117/12.2233793.

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