Straylight in ISOPHOT?

D. Lemke, Th Kranz, U. Klaas, O. Krause, J. Schubert, M. Stickel, L. Tóth, J. Wolf

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

Abstract

Design measures and preflight tests were the first steps taken to reduce and check for instrumental straylight. Requirements for ISO derived from the natural sky brightness were the basis for relevant preflight studies involving ISO and ISOPHOT. Inspections of the cryostat identified several IR photon leaks. Their elimination was verified by a "Dark background test". In flight, the extended profiles of bright point-like sources were measured to study potential near-field straylight. During solar eclipses the straylight of the Sun and the Moon was searched for. Finally we checked for a potential unwanted signal of the Earth when it fully illuminated the inner sunshade. Surprisingly, the 170 μm Serendipity Survey contributed to our knowledge of instrumental straylight. To summarise, straylight was a negligible contribution to most measurements, but it can be a small correction factor under rare observing conditions near the detection limit.

Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
Pages219-224
Number of pages6
Edition481
Publication statusPublished - May 2003
EventThe Calibration Legacy of the ISO Mission - madrid, Spain
Duration: Feb 5 2001Feb 9 2001

Other

OtherThe Calibration Legacy of the ISO Mission
CountrySpain
Citymadrid
Period2/5/012/9/01

Fingerprint

Cryostats
Moon
Sun
Luminance
Photons
Inspection
Earth (planet)

Keywords

  • Infrared: general
  • Instrumentation: detectors
  • Instrumentation: photometers
  • Space vehicles: instruments

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Lemke, D., Kranz, T., Klaas, U., Krause, O., Schubert, J., Stickel, M., ... Wolf, J. (2003). Straylight in ISOPHOT? In European Space Agency, (Special Publication) ESA SP (481 ed., pp. 219-224)

Straylight in ISOPHOT? / Lemke, D.; Kranz, Th; Klaas, U.; Krause, O.; Schubert, J.; Stickel, M.; Tóth, L.; Wolf, J.

European Space Agency, (Special Publication) ESA SP. 481. ed. 2003. p. 219-224.

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

Lemke, D, Kranz, T, Klaas, U, Krause, O, Schubert, J, Stickel, M, Tóth, L & Wolf, J 2003, Straylight in ISOPHOT? in European Space Agency, (Special Publication) ESA SP. 481 edn, pp. 219-224, The Calibration Legacy of the ISO Mission, madrid, Spain, 2/5/01.
Lemke D, Kranz T, Klaas U, Krause O, Schubert J, Stickel M et al. Straylight in ISOPHOT? In European Space Agency, (Special Publication) ESA SP. 481 ed. 2003. p. 219-224
Lemke, D. ; Kranz, Th ; Klaas, U. ; Krause, O. ; Schubert, J. ; Stickel, M. ; Tóth, L. ; Wolf, J. / Straylight in ISOPHOT?. European Space Agency, (Special Publication) ESA SP. 481. ed. 2003. pp. 219-224
@inproceedings{3c50284768ed46a191c3e30b0e93cda8,
title = "Straylight in ISOPHOT?",
abstract = "Design measures and preflight tests were the first steps taken to reduce and check for instrumental straylight. Requirements for ISO derived from the natural sky brightness were the basis for relevant preflight studies involving ISO and ISOPHOT. Inspections of the cryostat identified several IR photon leaks. Their elimination was verified by a {"}Dark background test{"}. In flight, the extended profiles of bright point-like sources were measured to study potential near-field straylight. During solar eclipses the straylight of the Sun and the Moon was searched for. Finally we checked for a potential unwanted signal of the Earth when it fully illuminated the inner sunshade. Surprisingly, the 170 μm Serendipity Survey contributed to our knowledge of instrumental straylight. To summarise, straylight was a negligible contribution to most measurements, but it can be a small correction factor under rare observing conditions near the detection limit.",
keywords = "Infrared: general, Instrumentation: detectors, Instrumentation: photometers, Space vehicles: instruments",
author = "D. Lemke and Th Kranz and U. Klaas and O. Krause and J. Schubert and M. Stickel and L. T{\'o}th and J. Wolf",
year = "2003",
month = "5",
language = "English",
pages = "219--224",
booktitle = "European Space Agency, (Special Publication) ESA SP",
edition = "481",

}

TY - GEN

T1 - Straylight in ISOPHOT?

AU - Lemke, D.

AU - Kranz, Th

AU - Klaas, U.

AU - Krause, O.

AU - Schubert, J.

AU - Stickel, M.

AU - Tóth, L.

AU - Wolf, J.

PY - 2003/5

Y1 - 2003/5

N2 - Design measures and preflight tests were the first steps taken to reduce and check for instrumental straylight. Requirements for ISO derived from the natural sky brightness were the basis for relevant preflight studies involving ISO and ISOPHOT. Inspections of the cryostat identified several IR photon leaks. Their elimination was verified by a "Dark background test". In flight, the extended profiles of bright point-like sources were measured to study potential near-field straylight. During solar eclipses the straylight of the Sun and the Moon was searched for. Finally we checked for a potential unwanted signal of the Earth when it fully illuminated the inner sunshade. Surprisingly, the 170 μm Serendipity Survey contributed to our knowledge of instrumental straylight. To summarise, straylight was a negligible contribution to most measurements, but it can be a small correction factor under rare observing conditions near the detection limit.

AB - Design measures and preflight tests were the first steps taken to reduce and check for instrumental straylight. Requirements for ISO derived from the natural sky brightness were the basis for relevant preflight studies involving ISO and ISOPHOT. Inspections of the cryostat identified several IR photon leaks. Their elimination was verified by a "Dark background test". In flight, the extended profiles of bright point-like sources were measured to study potential near-field straylight. During solar eclipses the straylight of the Sun and the Moon was searched for. Finally we checked for a potential unwanted signal of the Earth when it fully illuminated the inner sunshade. Surprisingly, the 170 μm Serendipity Survey contributed to our knowledge of instrumental straylight. To summarise, straylight was a negligible contribution to most measurements, but it can be a small correction factor under rare observing conditions near the detection limit.

KW - Infrared: general

KW - Instrumentation: detectors

KW - Instrumentation: photometers

KW - Space vehicles: instruments

UR - http://www.scopus.com/inward/record.url?scp=0141937661&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141937661&partnerID=8YFLogxK

M3 - Conference contribution

SP - 219

EP - 224

BT - European Space Agency, (Special Publication) ESA SP

ER -