Gaia Data Release 2 Calibration and mitigation of electronic offset effects in the data

被引：31

作者：

Hambly, N. C. ^{[1
]}

Cropper, M. ^{[2
]}

Boudreault, S. ^{[2
,3
]}

Crowley, C. ^{[4
]}

Kohley, R. ^{[5
]}

de Bruijne, J. H. J. ^{[6
]}

Dolding, C. ^{[2
]}

Fabricius, C. ^{[7
]}

Seabroke, G. ^{[2
]}

Davidson, M. ^{[1
]}

Rowell, N. ^{[1
]}

Collins, R. ^{[1
]}

Cross, N. ^{[1
]}

Martin-Fleitas, J. ^{[8
]}

Baker, S. ^{[2
]}

Smith, M. ^{[2
]}

Sartoretti, P. ^{[9
]}

Marchal, O. ^{[9
]}

Katz, D. ^{[9
]}

De Angeli, F. ^{[10
]}

Busso, G. ^{[10
]}

Riello, M. ^{[10
]}

Allende Prieto, C. ^{[2
,11
,12
]}

Els, S. ^{[13
,14
]}

Corcione, L. ^{[15
]}

Masana, E. ^{[7
]}

Luri, X. ^{[7
]}

Chassat, F. ^{[16
]}

Fusero, F. ^{[16
]}

Pasquier, J. F. ^{[16
]}

Vetel, C. ^{[16
]}

Sarri, G. ^{[17
]}

Gare, P. ^{[17
]}

机构：

[1] Univ Edinburgh, Inst Astron, Sch Phys & Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland

[2] Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England

[3] Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany

[4] HE Space Operat BV ESA ESAC, Camino Bajo Castillo S-N, Villanueva De La Canada 28691, Spain

[5] ESA, ESAC, Camino Bajo Castillo S-N, Villanueva De La Canada 28691, Spain

[6] ESA, European Space Res & Technol Ctr ESTEC, Keplerlaan 1, NL-2201 AG Noordwijk, Netherlands

[7] Univ Barcelona IEEC UB, Inst Ciencies Cosmos, Marti Franques 1, Barcelona 08028, Spain

[8] Aurora Technol BV ESA ESAC, Camino Bajo Castillo S-N, Villanueva De La Canada 28691, Spain

[9] Univ Paris Diderot, PSL Res Univ, CNRS, GEPI,Observ Paris,Sorbonne Paris Cite, 5 Pl Jules Janssen, F-92190 Meudon, France

[10] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[11] Inst Astrofis Canarias, Tenerife 38205, Islas Canarias, Spain

[12] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Islas Canarias, Spain

[13] ESAC, Gaia DPAC Project Off, Camino Bajo Castillo S-N, Madrid 28692, Spain

[14] Heidelberg Univ, Zentrum Astron, Astron Rech Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany

[15] INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy

[16] Airbus Def & Space SAS, 31 Rue Cosmonautes, F-31402 Toulouse 4, France

[17] European Space Res & Technol Ctr ESA ESTEC, Directorate Sci, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2018年 / 616卷

基金：

英国科学技术设施理事会;

关键词：

instrumentation: detectors; methods: data analysis; space vehicles: instruments;

D O I：

10.1051/0004-6361/201832716

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. The European Space Agency's Gaia satellite was launched into orbit around L2 in December 2013. This ambitious mission has strict requirements on residual systematic errors resulting from instrumental corrections in order to meet a design goal of sub-10 microarcsecond astrometry. During the design and build phase of the science instruments, various critical calibrations were studied in detail to ensure that this goal could be met in orbit. In particular, it was determined that the video-chain offsets on the analogue side of the analogue-to-digital conversion electronics exhibited instabilities that could not be mitigated fully by modifications to the flight hardware. Aims. We provide a detailed description of the behaviour of the electronic offset levels on short (< 1 ms) timescales, identifying various systematic effects that are known collectively as "offset non-uniformities". The effects manifest themselves as transient perturbations on the gross zero-point electronic offset level that is routinely monitored as part of the overall calibration process. Methods. Using in-orbit special calibration sequences along with simple parametric models, we show how the effects can be calibrated, and how these calibrations are applied to the science data. While the calibration part of the process is relatively straightforward, the application of the calibrations during science data processing requires a detailed on-ground reconstruction of the readout timing of each charge-coupled device (CCD) sample on each device in order to predict correctly the highly time-dependent nature of the corrections. Results. We demonstrate the effectiveness of our offset non-uniformity models in mitigating the effects in Gaia data. Conclusions. We demonstrate for all CCDs and operating instrument/modes on board Gaia that the video-chain noise-limited performance is recovered in the vast majority of science samples.

引用

页数：19

共 50 条

[1] Gaia Early Data Release 3: Modelling and calibration of Gaia's point and line spread functions
Rowell, N.
Davidson, M.
Lindegren, L.
van Leeuwen, F.
Castaneda, J.
Fabricius, C.
Bastian, U.
Hambly, N. C.
Hernandez, J.
Bombrun, A.
Evans, D. W.
De Angeli, F.
Riello, M.
Busonero, D.
Crowley, C.
Mora, A.
Lammers, U.
Gracia, G.
Portell, J.
Biermann, M.
Brown, A. G. A.
ASTRONOMY & ASTROPHYSICS, 2021, 649 (649)
[2] Calibration of the photometric G passband for Gaia Data Release 1
Maiz Apellaniz, J.
ASTRONOMY & ASTROPHYSICS, 2017, 608
[3] Contrast sensitivities in the Gaia Data Release 2
Brandeker, Alexis
Cataldi, Gianni
ASTRONOMY & ASTROPHYSICS, 2019, 621
[4] Gaia Data Release 2 Observations of solar system objects
Spoto, F.
Tanga, P.
Mignard, F.
Berthier, J.
Carry, B.
Cellino, A.
Dell'Oro, A.
Hestroffer, D.
Muinonen, K.
Pauwels, T.
Petit, J. -M.
David, P.
De Angeli, F.
Delbo, M.
Frezouls, B.
Galluccio, L.
Granvik, M.
Guiraud, J.
Hernandez, J.
Ordenovic, C.
Portell, J.
Poujoulet, E.
Thuillot, W.
Walmsley, G.
Brown, A. G. A.
Vallenari, A.
Prusti, T.
de Bruijne, J. H. J.
Babusiaux, C.
Bailer-Jones, C. A. L.
Biermann, M.
Evans, D. W.
Eyer, L.
Jansen, F.
Jordi, C.
Klioner, S. A.
Lammers, U.
Lindegren, L.
Luri, X.
Panem, C.
Pourbaix, D.
Randich, S.
Sartoretti, P.
Siddiqui, H. I.
Soubiran, C.
van Leeuwen, F.
Walton, N. A.
Arenou, F.
Bastian, U.
Cropper, M.
ASTRONOMY & ASTROPHYSICS, 2018, 616
[5] Gaia Data Release 1 Principles of the photometric calibration of the G band
Carrasco, J. M.
Evans, D. W.
Montegriffo, P.
Jordi, C.
van Leeuwen, F.
Riello, M.
Voss, H.
De Angeli, F.
Busso, G.
Fabricius, C.
Cacciari, C.
Weiler, M.
Pancino, E.
Brown, A. G. A.
Holland, G.
Burgess, P.
Osborne, P.
Altavilla, G.
Gebran, M.
Ragaini, S.
Galleti, S.
Cocozza, G.
Marinoni, S.
Bellazzini, M.
Bragaglia, A.
Federici, L.
Balaguer-Nunez, L.
ASTRONOMY & ASTROPHYSICS, 2016, 595
[6] Machine learning classification of Gaia Data Release 2
Yu Bai
Ji-Feng Liu
Song Wang
Research in Astronomy and Astrophysics, 2018, 18 (10) : 3 - 6
[7] Quasar and galaxy classification in Gaia Data Release 2
Bailer-Jones, Coryn A. L.
Fouesneau, Morgan
Andrae, Rene
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 490 (04) : 5615 - 5633
[8] Machine learning classification of Gaia Data Release 2
Bai, Yu
Liu, Ji-Feng
Wang, Song
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2018, 18 (10)
[9] Gaia Early Data Release 3 The astrometric solution
Lindegren, L.
Klioner, S. A.
Hernandez, J.
Bombrun, A.
Ramos-Lerate, M.
Steidelmuller, H.
Bastian, U.
Biermann, M.
de Torres, A.
Gerlach, E.
Geyer, R.
Hilger, T.
Hobbs, D.
Lammers, U.
McMillan, P. J.
Stephenson, C. A.
Castaneda, J.
Davidson, M.
Fabricius, C.
Gracia-Abril, G.
Portell, J.
Rowell, N.
Teyssier, D.
Torra, F.
Bartolome, S.
Clotet, M.
Garralda, N.
Gonzalez-Vidal, J. J.
Torra, J.
Abbas, U.
Altmann, M.
Varela, E. Anglada
Balaguer-Nunez, L.
Balog, Z.
Barache, C.
Becciani, U.
Bernet, M.
Bertone, S.
Bianchi, L.
Bouquillon, S.
Brown, A. G. A.
Bucciarelli, B.
Busonero, D.
Butkevich, A. G.
Buzzi, R.
Cancelliere, R.
Carlucci, T.
Charlot, P.
Cioni, M-R L.
Crosta, M.
ASTRONOMY & ASTROPHYSICS, 2021, 649
[10] Gaia Data Release 2 The first Gaia catalogue of long-period variable candidates
Mowlavi, N.
Lecoeur-Taibi, I
Lebzelter, T.
Rimoldini, L.
Lorenz, D.
Audard, M.
De Ridder, J.
Eyer, L.
Guy, L. P.
Holl, B.
de Fombelle, G. Jevardat
Marchal, O.
Nienartowicz, K.
Regibo, S.
Roelens, M.
Sarro, L. M.
ASTRONOMY & ASTROPHYSICS, 2018, 618

← 1 2 3 4 5 →