The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations

A. D. Hincks, P. A R Ade, C. Allen, M. Amiri, J. W. Appel, E. S. Battistelli, B. Burger, J. A. Chervenak, A. J. Dahlen, S. Denny, M. J. Devlin, S. R. Dicker, W. B. Doriese, R. Dünner, T. Essinger-Hileman, R. P. Fisher, J. W. Fowler, M. Halpern, P. C. Hargrave, M. Hasselfield & 26 others G. C. Hilton, K. D. Irwin, N. Jarosik, M. Kaul, J. Klein, J. M. Lau, M. Limon, R. H. Lupton, T. A. Marriage, K. L. Martocci, Philip Mauskopf, S. H. Moseley, C. B. Netterfield, M. D. Niemack, M. R. Nolta, L. Page, L. P. Parker, A. J. Sederberg, S. T. Staggs, O. R. Stryzak, D. S. Swetz, E. R. Switzer, R. J. Thornton, C. Tucker, E. J. Wollack, Y. Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

The Atacama Cosmology Telescope is a six meter, off-axis Gregorian telescope for measuring the cosmic microwave background at arcminute resolutions. The Millimeter Bolometer Array Camera (MBAC) is its current science instrument. Erected in the Atacama, Desert of Chile in early 2007, it saw first light with the MBAC on 22 October 2007. In this paper we review its performance after one month of observing, focusing in particular on issues surrounding the alignment of the optical system that impact the sensitivity of the experiment. We discuss the telescope motion, pointing, and susceptibility to thermal distortions. We describe the mirror alignment procedure, which has yielded surface deviations of 31 μm rms on the primary and 10 μm rms on the secondary. Observations of planets show that the optical performance is consistent with the telescope design parameters. Preliminary analysis measures a solid angle of about 215 nanosteradians with a full width at half maximum of 1.44 arcminutes at 145 GHz.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7020
DOIs
StatePublished - 2008
Externally publishedYes
EventMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV - Marseille, France
Duration: Jun 26 2008Jun 28 2008

Other

OtherMillimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
CountryFrance
CityMarseille
Period6/26/086/28/08

Fingerprint

Cosmology
Telescopes
Microwave
cosmology
Telescope
Alignment
alignment
Microwaves
telescopes
microwaves
Bolometer
Bolometers
bolometers
Camera
Cameras
cameras
Solid angle
Chile
deserts
Planets

Keywords

  • CMB observations
  • Microwave telescopes

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Hincks, A. D., Ade, P. A. R., Allen, C., Amiri, M., Appel, J. W., Battistelli, E. S., ... Zhao, Y. (2008). The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7020). [70201P] https://doi.org/10.1117/12.790020

The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations. / Hincks, A. D.; Ade, P. A R; Allen, C.; Amiri, M.; Appel, J. W.; Battistelli, E. S.; Burger, B.; Chervenak, J. A.; Dahlen, A. J.; Denny, S.; Devlin, M. J.; Dicker, S. R.; Doriese, W. B.; Dünner, R.; Essinger-Hileman, T.; Fisher, R. P.; Fowler, J. W.; Halpern, M.; Hargrave, P. C.; Hasselfield, M.; Hilton, G. C.; Irwin, K. D.; Jarosik, N.; Kaul, M.; Klein, J.; Lau, J. M.; Limon, M.; Lupton, R. H.; Marriage, T. A.; Martocci, K. L.; Mauskopf, Philip; Moseley, S. H.; Netterfield, C. B.; Niemack, M. D.; Nolta, M. R.; Page, L.; Parker, L. P.; Sederberg, A. J.; Staggs, S. T.; Stryzak, O. R.; Swetz, D. S.; Switzer, E. R.; Thornton, R. J.; Tucker, C.; Wollack, E. J.; Zhao, Y.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7020 2008. 70201P.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hincks, AD, Ade, PAR, Allen, C, Amiri, M, Appel, JW, Battistelli, ES, Burger, B, Chervenak, JA, Dahlen, AJ, Denny, S, Devlin, MJ, Dicker, SR, Doriese, WB, Dünner, R, Essinger-Hileman, T, Fisher, RP, Fowler, JW, Halpern, M, Hargrave, PC, Hasselfield, M, Hilton, GC, Irwin, KD, Jarosik, N, Kaul, M, Klein, J, Lau, JM, Limon, M, Lupton, RH, Marriage, TA, Martocci, KL, Mauskopf, P, Moseley, SH, Netterfield, CB, Niemack, MD, Nolta, MR, Page, L, Parker, LP, Sederberg, AJ, Staggs, ST, Stryzak, OR, Swetz, DS, Switzer, ER, Thornton, RJ, Tucker, C, Wollack, EJ & Zhao, Y 2008, The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7020, 70201P, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, Marseille, France, 6/26/08. https://doi.org/10.1117/12.790020
Hincks AD, Ade PAR, Allen C, Amiri M, Appel JW, Battistelli ES et al. The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7020. 2008. 70201P https://doi.org/10.1117/12.790020
Hincks, A. D. ; Ade, P. A R ; Allen, C. ; Amiri, M. ; Appel, J. W. ; Battistelli, E. S. ; Burger, B. ; Chervenak, J. A. ; Dahlen, A. J. ; Denny, S. ; Devlin, M. J. ; Dicker, S. R. ; Doriese, W. B. ; Dünner, R. ; Essinger-Hileman, T. ; Fisher, R. P. ; Fowler, J. W. ; Halpern, M. ; Hargrave, P. C. ; Hasselfield, M. ; Hilton, G. C. ; Irwin, K. D. ; Jarosik, N. ; Kaul, M. ; Klein, J. ; Lau, J. M. ; Limon, M. ; Lupton, R. H. ; Marriage, T. A. ; Martocci, K. L. ; Mauskopf, Philip ; Moseley, S. H. ; Netterfield, C. B. ; Niemack, M. D. ; Nolta, M. R. ; Page, L. ; Parker, L. P. ; Sederberg, A. J. ; Staggs, S. T. ; Stryzak, O. R. ; Swetz, D. S. ; Switzer, E. R. ; Thornton, R. J. ; Tucker, C. ; Wollack, E. J. ; Zhao, Y. / The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7020 2008.
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abstract = "The Atacama Cosmology Telescope is a six meter, off-axis Gregorian telescope for measuring the cosmic microwave background at arcminute resolutions. The Millimeter Bolometer Array Camera (MBAC) is its current science instrument. Erected in the Atacama, Desert of Chile in early 2007, it saw first light with the MBAC on 22 October 2007. In this paper we review its performance after one month of observing, focusing in particular on issues surrounding the alignment of the optical system that impact the sensitivity of the experiment. We discuss the telescope motion, pointing, and susceptibility to thermal distortions. We describe the mirror alignment procedure, which has yielded surface deviations of 31 μm rms on the primary and 10 μm rms on the secondary. Observations of planets show that the optical performance is consistent with the telescope design parameters. Preliminary analysis measures a solid angle of about 215 nanosteradians with a full width at half maximum of 1.44 arcminutes at 145 GHz.",
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T1 - The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations

AU - Hincks, A. D.

AU - Ade, P. A R

AU - Allen, C.

AU - Amiri, M.

AU - Appel, J. W.

AU - Battistelli, E. S.

AU - Burger, B.

AU - Chervenak, J. A.

AU - Dahlen, A. J.

AU - Denny, S.

AU - Devlin, M. J.

AU - Dicker, S. R.

AU - Doriese, W. B.

AU - Dünner, R.

AU - Essinger-Hileman, T.

AU - Fisher, R. P.

AU - Fowler, J. W.

AU - Halpern, M.

AU - Hargrave, P. C.

AU - Hasselfield, M.

AU - Hilton, G. C.

AU - Irwin, K. D.

AU - Jarosik, N.

AU - Kaul, M.

AU - Klein, J.

AU - Lau, J. M.

AU - Limon, M.

AU - Lupton, R. H.

AU - Marriage, T. A.

AU - Martocci, K. L.

AU - Mauskopf, Philip

AU - Moseley, S. H.

AU - Netterfield, C. B.

AU - Niemack, M. D.

AU - Nolta, M. R.

AU - Page, L.

AU - Parker, L. P.

AU - Sederberg, A. J.

AU - Staggs, S. T.

AU - Stryzak, O. R.

AU - Swetz, D. S.

AU - Switzer, E. R.

AU - Thornton, R. J.

AU - Tucker, C.

AU - Wollack, E. J.

AU - Zhao, Y.

PY - 2008

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N2 - The Atacama Cosmology Telescope is a six meter, off-axis Gregorian telescope for measuring the cosmic microwave background at arcminute resolutions. The Millimeter Bolometer Array Camera (MBAC) is its current science instrument. Erected in the Atacama, Desert of Chile in early 2007, it saw first light with the MBAC on 22 October 2007. In this paper we review its performance after one month of observing, focusing in particular on issues surrounding the alignment of the optical system that impact the sensitivity of the experiment. We discuss the telescope motion, pointing, and susceptibility to thermal distortions. We describe the mirror alignment procedure, which has yielded surface deviations of 31 μm rms on the primary and 10 μm rms on the secondary. Observations of planets show that the optical performance is consistent with the telescope design parameters. Preliminary analysis measures a solid angle of about 215 nanosteradians with a full width at half maximum of 1.44 arcminutes at 145 GHz.

AB - The Atacama Cosmology Telescope is a six meter, off-axis Gregorian telescope for measuring the cosmic microwave background at arcminute resolutions. The Millimeter Bolometer Array Camera (MBAC) is its current science instrument. Erected in the Atacama, Desert of Chile in early 2007, it saw first light with the MBAC on 22 October 2007. In this paper we review its performance after one month of observing, focusing in particular on issues surrounding the alignment of the optical system that impact the sensitivity of the experiment. We discuss the telescope motion, pointing, and susceptibility to thermal distortions. We describe the mirror alignment procedure, which has yielded surface deviations of 31 μm rms on the primary and 10 μm rms on the secondary. Observations of planets show that the optical performance is consistent with the telescope design parameters. Preliminary analysis measures a solid angle of about 215 nanosteradians with a full width at half maximum of 1.44 arcminutes at 145 GHz.

KW - CMB observations

KW - Microwave telescopes

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