Gaia basic angle monitoring system

Gielesen, W.L.M.; Bruijn, D. de; Dool, T.C. van den; Kamphues, Fred; Mekking, J.; Calvel, Bertrand; Laborie, A.; Coatantiec, Claude; Touzeau, S.; Erdmann, Matthias; Gare, P.; Monteiro, D.

doi:10.1117/12.2026928

Cited by 12 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4.2) and arguably carries the most precise interferometric metrology system ever flown, the basic angle monitor (BAM; e.g. Meijer et al 2009;Gielesen et al 2013;Mora et al 2014b). The BAM is composed of two optical benches fed by a common laser source that introduces two parallel, collimated beams per telescope.…”

Section: Basic Angle Monitormentioning

confidence: 99%

TheGaiamission

Prusti¹,

Bruijne²,

Brown³

et al. 2016

A&A

Self Cite

5,286

1,139

View full text Add to dashboard Cite

Gaia is a cornerstone mission in the science programme of the European Space Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach. Both the spacecraft and the payload were built by European industry. The involvement of the scientific community focusses on data processing for which the international Gaia Data Processing and Analysis Consortium (DPAC) was selected in 2007. Gaia was launched on 19 December 2013 and arrived at its operating point, the second Lagrange point of the Sun-Earth-Moon system, a few weeks later. The commissioning of the spacecraft and payload was completed on 19 July 2014. The nominal five-year mission started with four weeks of special, ecliptic-pole scanning and subsequently transferred into full-sky scanning mode. We recall the scientific goals of Gaia and give a description of the as-built spacecraft that is currently (mid-2016) being operated to achieve these goals. We pay special attention to the payload module, the performance of which is closely related to the scientific performance of the mission. We provide a summary of the commissioning activities and findings, followed by a description of the routine operational mode. We summarise scientific performance estimates on the basis of in-orbit operations. Several intermediate Gaia data releases are planned and the data can be retrieved from the Gaia Archive, which is available through the Gaia home page.

show abstract

Section: Basic Angle Monitormentioning

confidence: 99%

TheGaiamission

Prusti¹,

Bruijne²,

Brown³

et al. 2016

A&A

Self Cite

5,286

1,139

View full text Add to dashboard Cite

show abstract

“…Therefore—since these thermal deformations cannot be eliminated, are difficult to model, and are not predictable in real-time with the requisite precision—the common solution is to have a metrology system to measure changes in the alignment between the various instruments. There are many different designs for such metrology systems, and these have been demonstrated with some success for both ground-based [137,138,139] and space-based [140,141,142] wide-angle astrometry. It is expected that a metrology system will be required to monitor component alignment in any future StarNAV-SA sensor system.…”

Section: Preliminary Feasibility Assessment Of Starnav Measurementsmentioning

confidence: 99%

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

Christian

2019

Sensors

View full text Add to dashboard Cite

Future space exploration missions require increased autonomy. This is especially true for navigation, where continued reliance on Earth-based resources is often a limiting factor in mission design and selection. In response to the need for autonomous navigation, this work introduces the StarNAV framework that may allow a spacecraft to autonomously navigate anywhere in the Solar System (or beyond) using only passive observations of naturally occurring starlight. Relativistic perturbations in the wavelength and direction of observed stars may be used to infer spacecraft velocity which, in turn, may be used for navigation. This work develops the mathematics governing such an approach and explores its efficacy for autonomous navigation. Measurement of stellar spectral shift due to the relativistic Doppler effect is found to be ineffective in practice. Instead, measurement of the change in inter-star angle due to stellar aberration appears to be the most promising technique for navigation by the relativistic perturbation of starlight.

show abstract

“…The Basic Angle Monitor (BAM) is one of the key optical sensors of the Gaia payload [4]. The two lines of sight of the two telescopes of the Gaia payload are separated by 106.5˚.…”

Section: Gaia Opticsmentioning

confidence: 99%

ESA’s Gaia mission: a billion stars with a billion pixels

Bruijne

Erdmann

2019

Photoniques

View full text Add to dashboard Cite

Astrometry is the astronomical discipline of measuring the positions, and changes therein, of celestial bodies. Accurate astrometry from the ground is limited by the blurring effects induced by the Earth’s atmosphere. Since decades, Europe has been at the forefront of making astrometric measurements from space. The European Space Agency (ESA) launched the first satellite dedicated to astrometry, named Hipparcos, in 1989, culminating in the release of the Hipparcos Catalogue containing astrometric data for 117 955 stars in 1997. Since mid 2014, Hipparcos’ successor, Gaia, has been collecting astrometric data, with a 100 times improved precision, for 10 000 times as many stars.

show abstract

Gaia basic angle monitoring system

Abstract: The Gaia mission 1 will create an extraordinarily precise three-dimensional map of more than one billion stars in our Galaxy. The Gaia spacecraft 2

Cited by 12 publications

References 1 publication

TheGaiamission

TheGaiamission

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

ESA’s Gaia mission: a billion stars with a billion pixels

Contact Info

Product

Resources

About