ISOPHOT: In-flight performance report

Dietrich Lemke, Ulrich Klaas, P. Ábrahám, J. A. Acosta Pulido, H. Castaneda, L. Cornwall, C. Gabriel, Ulrich Grözinger, M. Haas, Ingolf Heinrichsen, Uwe Herbstmeier, Josef Schubert, Bernhard Schulz, Manfred Stickel, L. Tóth

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

2 Citations (Scopus)

Abstract

The imaging photopolarimeter ISOPHOT on-board the European satellite ISO houses 144 background detectors of Si:Ga, Si:P, Ge:Ga and stressed Ge:Ga, all sampled by newly developed cold read-out electronics. There is large temporal radiation damage to most of these detectors on the daily passage through the earth's radiation belts. In addition the Ge:Ga detectors exhibit a continuous responsivity increase caused by the cosmic radiation far off the earth. Effective curing procedure shave been developed to heat out these effects. The in-flight sensitivities achieved are close to the pre-flight predictions for most channels. At 100-200 micrometers cirrus confusion is a serious limit for the detection of faint objects on large parts of the sky. The cold filter wheel carrying 56 optical elements, such as filters, apertures and polarizers, as well as the focal plane chopper, operate with high precision and very low power consumption. Due to an effective cold internal baffle system the measured near-field straylight was close to the pre- flight theoretical prediction based on APART simulations. THe sun and moon straylight at 25 and 175 micrometers was measured during several solar eclipses. Drift and transients of the detectors, non-linearities of the preamplifiers, ionizing radiation effects and a complex optical path make the photometric calibration of this instrument challenging. Because most of these effects are reproducible, a calibration accuracy of <30 percent is already available for most photometric modes. Examples of observations, including the 175 micrometers Serendipitous Sky Survey, will highlight the capabilities of the instrument.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages627-636
Number of pages10
Volume3354
DOIs
Publication statusPublished - 1998
EventInfrared Astronomical Instrumentation - Kona, HI, United States
Duration: Mar 23 1998Mar 23 1998

Other

OtherInfrared Astronomical Instrumentation
CountryUnited States
CityKona, HI
Period3/23/983/23/98

Fingerprint

flight characteristics
Flight dynamics
Detector
Detectors
micrometers
detectors
flight
Calibration
Earth (planet)
Radiation
Radiation belts
Filter
terrestrial radiation
Radiation Damage
filters
Radiation Effects
Baffle
faint objects
solar eclipses
radiation belts

ASJC Scopus subject areas

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

Cite this

Lemke, D., Klaas, U., Ábrahám, P., Acosta Pulido, J. A., Castaneda, H., Cornwall, L., ... Tóth, L. (1998). ISOPHOT: In-flight performance report. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3354, pp. 627-636) https://doi.org/10.1117/12.317289

ISOPHOT : In-flight performance report. / Lemke, Dietrich; Klaas, Ulrich; Ábrahám, P.; Acosta Pulido, J. A.; Castaneda, H.; Cornwall, L.; Gabriel, C.; Grözinger, Ulrich; Haas, M.; Heinrichsen, Ingolf; Herbstmeier, Uwe; Schubert, Josef; Schulz, Bernhard; Stickel, Manfred; Tóth, L.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3354 1998. p. 627-636.

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

Lemke, D, Klaas, U, Ábrahám, P, Acosta Pulido, JA, Castaneda, H, Cornwall, L, Gabriel, C, Grözinger, U, Haas, M, Heinrichsen, I, Herbstmeier, U, Schubert, J, Schulz, B, Stickel, M & Tóth, L 1998, ISOPHOT: In-flight performance report. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3354, pp. 627-636, Infrared Astronomical Instrumentation, Kona, HI, United States, 3/23/98. https://doi.org/10.1117/12.317289
Lemke D, Klaas U, Ábrahám P, Acosta Pulido JA, Castaneda H, Cornwall L et al. ISOPHOT: In-flight performance report. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3354. 1998. p. 627-636 https://doi.org/10.1117/12.317289
Lemke, Dietrich ; Klaas, Ulrich ; Ábrahám, P. ; Acosta Pulido, J. A. ; Castaneda, H. ; Cornwall, L. ; Gabriel, C. ; Grözinger, Ulrich ; Haas, M. ; Heinrichsen, Ingolf ; Herbstmeier, Uwe ; Schubert, Josef ; Schulz, Bernhard ; Stickel, Manfred ; Tóth, L. / ISOPHOT : In-flight performance report. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3354 1998. pp. 627-636
@inproceedings{adb288a41bce416fa6df0878d308d46c,
title = "ISOPHOT: In-flight performance report",
abstract = "The imaging photopolarimeter ISOPHOT on-board the European satellite ISO houses 144 background detectors of Si:Ga, Si:P, Ge:Ga and stressed Ge:Ga, all sampled by newly developed cold read-out electronics. There is large temporal radiation damage to most of these detectors on the daily passage through the earth's radiation belts. In addition the Ge:Ga detectors exhibit a continuous responsivity increase caused by the cosmic radiation far off the earth. Effective curing procedure shave been developed to heat out these effects. The in-flight sensitivities achieved are close to the pre-flight predictions for most channels. At 100-200 micrometers cirrus confusion is a serious limit for the detection of faint objects on large parts of the sky. The cold filter wheel carrying 56 optical elements, such as filters, apertures and polarizers, as well as the focal plane chopper, operate with high precision and very low power consumption. Due to an effective cold internal baffle system the measured near-field straylight was close to the pre- flight theoretical prediction based on APART simulations. THe sun and moon straylight at 25 and 175 micrometers was measured during several solar eclipses. Drift and transients of the detectors, non-linearities of the preamplifiers, ionizing radiation effects and a complex optical path make the photometric calibration of this instrument challenging. Because most of these effects are reproducible, a calibration accuracy of <30 percent is already available for most photometric modes. Examples of observations, including the 175 micrometers Serendipitous Sky Survey, will highlight the capabilities of the instrument.",
author = "Dietrich Lemke and Ulrich Klaas and P. {\'A}brah{\'a}m and {Acosta Pulido}, {J. A.} and H. Castaneda and L. Cornwall and C. Gabriel and Ulrich Gr{\"o}zinger and M. Haas and Ingolf Heinrichsen and Uwe Herbstmeier and Josef Schubert and Bernhard Schulz and Manfred Stickel and L. T{\'o}th",
year = "1998",
doi = "10.1117/12.317289",
language = "English",
volume = "3354",
pages = "627--636",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - ISOPHOT

T2 - In-flight performance report

AU - Lemke, Dietrich

AU - Klaas, Ulrich

AU - Ábrahám, P.

AU - Acosta Pulido, J. A.

AU - Castaneda, H.

AU - Cornwall, L.

AU - Gabriel, C.

AU - Grözinger, Ulrich

AU - Haas, M.

AU - Heinrichsen, Ingolf

AU - Herbstmeier, Uwe

AU - Schubert, Josef

AU - Schulz, Bernhard

AU - Stickel, Manfred

AU - Tóth, L.

PY - 1998

Y1 - 1998

N2 - The imaging photopolarimeter ISOPHOT on-board the European satellite ISO houses 144 background detectors of Si:Ga, Si:P, Ge:Ga and stressed Ge:Ga, all sampled by newly developed cold read-out electronics. There is large temporal radiation damage to most of these detectors on the daily passage through the earth's radiation belts. In addition the Ge:Ga detectors exhibit a continuous responsivity increase caused by the cosmic radiation far off the earth. Effective curing procedure shave been developed to heat out these effects. The in-flight sensitivities achieved are close to the pre-flight predictions for most channels. At 100-200 micrometers cirrus confusion is a serious limit for the detection of faint objects on large parts of the sky. The cold filter wheel carrying 56 optical elements, such as filters, apertures and polarizers, as well as the focal plane chopper, operate with high precision and very low power consumption. Due to an effective cold internal baffle system the measured near-field straylight was close to the pre- flight theoretical prediction based on APART simulations. THe sun and moon straylight at 25 and 175 micrometers was measured during several solar eclipses. Drift and transients of the detectors, non-linearities of the preamplifiers, ionizing radiation effects and a complex optical path make the photometric calibration of this instrument challenging. Because most of these effects are reproducible, a calibration accuracy of <30 percent is already available for most photometric modes. Examples of observations, including the 175 micrometers Serendipitous Sky Survey, will highlight the capabilities of the instrument.

AB - The imaging photopolarimeter ISOPHOT on-board the European satellite ISO houses 144 background detectors of Si:Ga, Si:P, Ge:Ga and stressed Ge:Ga, all sampled by newly developed cold read-out electronics. There is large temporal radiation damage to most of these detectors on the daily passage through the earth's radiation belts. In addition the Ge:Ga detectors exhibit a continuous responsivity increase caused by the cosmic radiation far off the earth. Effective curing procedure shave been developed to heat out these effects. The in-flight sensitivities achieved are close to the pre-flight predictions for most channels. At 100-200 micrometers cirrus confusion is a serious limit for the detection of faint objects on large parts of the sky. The cold filter wheel carrying 56 optical elements, such as filters, apertures and polarizers, as well as the focal plane chopper, operate with high precision and very low power consumption. Due to an effective cold internal baffle system the measured near-field straylight was close to the pre- flight theoretical prediction based on APART simulations. THe sun and moon straylight at 25 and 175 micrometers was measured during several solar eclipses. Drift and transients of the detectors, non-linearities of the preamplifiers, ionizing radiation effects and a complex optical path make the photometric calibration of this instrument challenging. Because most of these effects are reproducible, a calibration accuracy of <30 percent is already available for most photometric modes. Examples of observations, including the 175 micrometers Serendipitous Sky Survey, will highlight the capabilities of the instrument.

UR - http://www.scopus.com/inward/record.url?scp=60949085887&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=60949085887&partnerID=8YFLogxK

U2 - 10.1117/12.317289

DO - 10.1117/12.317289

M3 - Conference contribution

AN - SCOPUS:60949085887

VL - 3354

SP - 627

EP - 636

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -