Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays
Intensity-mapping observations measure galaxy clustering fluctuations from spectral–spatial maps, requiring stable noise properties on large angular scales. We have developed specialized readouts and analysis methods for achieving large-scale noise stability with Teledyne 2048 × 2048 H2RG infrared d...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal Supplement Series |
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| Online Access: | https://doi.org/10.3847/1538-4365/acebc1 |
| _version_ | 1797681617359077376 |
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| author | Grigory Heaton Walter Cook James Bock Jill Burnham Sam Condon Viktor Hristov Howard Hui Branislav Kecman Phillip Korngut Hiromasa Miyasaka Chi Nguyen Stephen Padin Marco Viero |
| author_facet | Grigory Heaton Walter Cook James Bock Jill Burnham Sam Condon Viktor Hristov Howard Hui Branislav Kecman Phillip Korngut Hiromasa Miyasaka Chi Nguyen Stephen Padin Marco Viero |
| author_sort | Grigory Heaton |
| collection | DOAJ |
| description | Intensity-mapping observations measure galaxy clustering fluctuations from spectral–spatial maps, requiring stable noise properties on large angular scales. We have developed specialized readouts and analysis methods for achieving large-scale noise stability with Teledyne 2048 × 2048 H2RG infrared detector arrays. We designed and fabricated a room-temperature low-noise ASIC Video8 amplifier to sample each of the 32 detector outputs continuously in sample-up-the-ramp mode with interleaved measurements of a stable reference voltage that remove current offsets and 1/ f noise from the amplifier. The amplifier addresses rows in an order different from their physical arrangement on the array, modulating temporal 1/ f noise in the H2RG to high spatial frequencies. Finally, we remove constant signal offsets in each of the 32 channels using reference pixels. These methods will be employed in the upcoming SPHEREx orbital mission that will carry out intensity-mapping observations in near-infrared spectral maps in deep fields located near the ecliptic poles. We also developed a noise model for the H2RG and Video8 to optimize the choice of parameters. Our analysis indicates that these methods hold residual 1/ f noise near the level of SPHEREx photon noise on angular scales smaller than ∼30′. |
| first_indexed | 2024-03-11T23:47:29Z |
| format | Article |
| id | doaj.art-e7cb14ace86e4d0abaacdddd7f3a6f6b |
| institution | Directory Open Access Journal |
| issn | 0067-0049 |
| language | English |
| last_indexed | 2024-03-11T23:47:29Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj.art-e7cb14ace86e4d0abaacdddd7f3a6f6b2023-09-19T09:04:23ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492023-01-0126824410.3847/1538-4365/acebc1Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector ArraysGrigory Heaton0https://orcid.org/0009-0003-5681-2956Walter Cook1James Bock2https://orcid.org/0000-0002-5710-5212Jill Burnham3Sam Condon4https://orcid.org/0000-0003-4255-3650Viktor Hristov5Howard Hui6https://orcid.org/0000-0001-5812-1903Branislav Kecman7Phillip Korngut8Hiromasa Miyasaka9https://orcid.org/0000-0002-8074-4186Chi Nguyen10https://orcid.org/0000-0001-9368-3186Stephen Padin11Marco Viero12https://orcid.org/0000-0003-0545-4872California Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduCalifornia Institute of Technology , Cahill Center for Astronomy and Astrophysics, 1216 East California Boulevard, Pasadena, CA 91125, USA ; gheaton@caltech.eduIntensity-mapping observations measure galaxy clustering fluctuations from spectral–spatial maps, requiring stable noise properties on large angular scales. We have developed specialized readouts and analysis methods for achieving large-scale noise stability with Teledyne 2048 × 2048 H2RG infrared detector arrays. We designed and fabricated a room-temperature low-noise ASIC Video8 amplifier to sample each of the 32 detector outputs continuously in sample-up-the-ramp mode with interleaved measurements of a stable reference voltage that remove current offsets and 1/ f noise from the amplifier. The amplifier addresses rows in an order different from their physical arrangement on the array, modulating temporal 1/ f noise in the H2RG to high spatial frequencies. Finally, we remove constant signal offsets in each of the 32 channels using reference pixels. These methods will be employed in the upcoming SPHEREx orbital mission that will carry out intensity-mapping observations in near-infrared spectral maps in deep fields located near the ecliptic poles. We also developed a noise model for the H2RG and Video8 to optimize the choice of parameters. Our analysis indicates that these methods hold residual 1/ f noise near the level of SPHEREx photon noise on angular scales smaller than ∼30′.https://doi.org/10.3847/1538-4365/acebc1Near infrared astronomyObservational cosmologyAstronomical instrumentationCosmic background radiation |
| spellingShingle | Grigory Heaton Walter Cook James Bock Jill Burnham Sam Condon Viktor Hristov Howard Hui Branislav Kecman Phillip Korngut Hiromasa Miyasaka Chi Nguyen Stephen Padin Marco Viero Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays The Astrophysical Journal Supplement Series Near infrared astronomy Observational cosmology Astronomical instrumentation Cosmic background radiation |
| title | Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays |
| title_full | Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays |
| title_fullStr | Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays |
| title_full_unstemmed | Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays |
| title_short | Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays |
| title_sort | noise reduction methods for large scale intensity mapping measurements with infrared detector arrays |
| topic | Near infrared astronomy Observational cosmology Astronomical instrumentation Cosmic background radiation |
| url | https://doi.org/10.3847/1538-4365/acebc1 |
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