Performance of flight-model on-board calibration sources on Herschel-SPIRE

Hargrave, Peter Charles; Waskett, Tim; Lim, T.; Swinyard, Bruce

doi:10.1117/12.673197

Cited by 9 publications

(4 citation statements)

References 12 publications

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“…The FPU has also been successfully subjected to cold vibration at the Herschel cryo-vibration facility at the Centre Spatial de Liège. Instrument test results are reported in detail in several papers at this meeting 4,10,15,16,19,27,28 . Although various problems and anomalies remain to be addressed, as is typical for the first operation of such a complex system, most performance requirements have already been demonstrated, as have many of the goals.…”

Section: Current Status Of the Spire Flight Instrument Programmementioning

confidence: 98%

Herschel-SPIRE: design, performance, and scientific capabilities

Griffin¹,

Abergel²,

André³

et al. 2006

Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter

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SPIRE, the Spectral and Photometric Imaging Receiver, is a submillimetre camera and spectrometer for the European Space Agency's Herschel Space Observatory. It comprises a three-band imaging photometer operating at 250, 360 and 520 µm, and an imaging Fourier Transform Spectrometer (FTS) covering 200-670 µm. The detectors are arrays of feedhorn-coupled NTD spider-web bolometers cooled to 0.3 K. The photometer field of view of is 4 x 8 arcmin., observed simultaneously in the three spectral bands. The FTS has an approximately circular field of view with a diameter of 2.6 arcmin., and employs a dual-beam configuration with broad-band intensity beam dividers to provide high efficiency and separated output and input ports. The spectral resolution can be adjusted between 0.04 and 2 cm -1 (resolving power of 20-1000 at 250 µm). The flight instrument is currently undergoing integration and test. The design of SPIRE is described, and the expected scientific performance is summarised, based on modelling and flight instrument test results.

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Section: Current Status Of the Spire Flight Instrument Programmementioning

confidence: 98%

Herschel-SPIRE: design, performance, and scientific capabilities

Griffin¹,

Abergel²,

André³

et al. 2006

Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter

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“…An internal calibration source (ICS) is used inflight to calibrate time variations of the detector responses. This device is described in [34,35]. The source is located behind mirror M3 and illuminates all detectors simultaneously.…”

Section: The Pilot Instrumentmentioning

confidence: 99%

Performance of the polarization leakage correction in the PILOT data

Bernard¹,

Bernard²,

Roussel³

et al. 2022

Preprint

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The Polarized Instrument for Long-wavelength Observation of the Tenuous interstellar medium (PILOT) is a balloon-borne experiment that aims to measure the polarized emission of thermal dust at a wavelength of 240 μm (1.2THz). The PILOT experiment flew from Timmins, Ontario, Canada in 2015 and 2019 and from Alice Springs, Australia in April 2017. The in-flight performance of the instrument during the second flight was described in [1]. In this paper,we present data processing steps that were not presented in [1] and that we have recently implemented to correct for several remaining instrumental effects. The additional data processing concerns corrections related to detector cross-talk and readout circuit memory effects, and leakage from total intensity to polarization. We illustrate the above effects and the performance of our corrections using data obtained during the third flight of PILOT, but the methods used to assess the impact of these effects on the final science-ready data, and our strategies for correcting them will be applied to all PILOT data. We show that the above corrections, and in particular that for the intensity to polarization leakage, which is most critical for accurate polarization measurements with PILOT, are accurate to better than 0.4% as measured on Jupiter during flight#3.

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“…A simple and cheap method of creating a compact cooled BB is to deposit a thin film on a dielectric substrate. For example, a calibrator developed as a submillimeter radiation source made of nichrome thin film on a sapphire substrate is presented in [3,4]. For bulk sources, a suitable material is silicon or silicon carbide.…”

Section: Introductionmentioning

confidence: 99%

Fast Variable-Temperature Cryogenic Blackbody Sources for Calibration of THz Superconducting Receivers

et al. 2022

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An electrically heated blackbody radiation source comprising thin metal film on a dielectric substrate and an integrating cavity was designed, fabricated, and experimentally studied at frequencies from 75 to 500 GHz. Analytical and numerical modeling were performed to optimize the emissivity, spectral uniformity, and modulation frequency of the radiation source with the spherical integrating cavity and thin film absorber. The blackbody emissivity (absorptivity) increased from 0.3 to 0.5 for the bare thin film on dielectric substrate, and up to 0.95 when it was placed inside the integrating cavity. The fabricated source mounted at the 0.5 K stage was used to measure the response time of a few microseconds and for sensitivity measurement down to 10−18 W/Hz1/2 of the superconductor–insulator–normal metal–insulator–superconductor (SINIS) detector at 100 mK.

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Performance of flight-model on-board calibration sources on Herschel-SPIRE

Cited by 9 publications

References 12 publications

Herschel-SPIRE: design, performance, and scientific capabilities

Herschel-SPIRE: design, performance, and scientific capabilities

Performance of the polarization leakage correction in the PILOT data

Fast Variable-Temperature Cryogenic Blackbody Sources for Calibration of THz Superconducting Receivers

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