The NBS scale of radiance temperature

Waters, William R.; Walker, James H.; Hattenburg, Albert T.

doi:10.6028/jres.092.002

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…Examples include argon arcs (Bridges and Ott 1977), bare metal photoemissive diodes (Saloman 1978), D 2 lamps (Klose et al 1988), tungsten-filament incandescent lamps (Waters et al 1988), hollow-cathode (Danzmann et al 1988;Hollandt et al 1994) and Penning (Heise et al 1994) discharges, and silicon trap detectors (Goebel et al 1996) and photodiodes (Kuschnerus et al 1998;Canfield et al 1998). …”

Section: Transfer Standardsmentioning

confidence: 99%

Spectroradiometry with space telescopes

Pauluhn

Huber

Smith

et al. 2015

Astron Astrophys Rev

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Radiometry, i.e. measuring the power of electromagnetic radiationhitherto often referred to as "photometry"-is of fundamental importance in astronomy. We provide an overview of how to achieve a valid laboratory calibration of space telescopes and discuss ways to reliably extend this calibration to the spectroscopic telescope's performance in space. A lot of effort has been, and still is going into radiometric "calibration" of telescopes once they are in space; these methods use celestial primary and transfer standards and are based in part on stellar models. The history of the calibration of the Hubble Space Telescope serves as a platform to review these methods. However, we insist that a true calibration of spectroscopic space telescopes must directly be based on and traceable to laboratory standards, and thus be independent of the observations. This has recently become a well-supported aim, following the discovery of the acceleration of the cosmic expansion by use of type-Ia supernovae, and has led to plans for launching calibration rockets for the visible and infrared spectral range. This is timely, too, because an adequate exploitation of data from present space missions, such as Gaia, and from many current astronomical projects like Euclid and WFIRST demands higher radiometric accuracy than is generally available today. A survey of the calibration of instruments observing from the X-ray to the infrared spectral domains that include instrument-or mission-specific estimates of radiometric accuracies rounds off this review.

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Section: Transfer Standardsmentioning

confidence: 99%

Spectroradiometry with space telescopes

Pauluhn

Huber

Smith

et al. 2015

Astron Astrophys Rev

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show abstract

“…include argon arcs (Bridges and Ott 1977), bare metal photoemissive diodes (Saloman 1978), D 2 lamps (Klose et al 1988), tungsten-filament incandescent lamps (Waters et al 1988), hollow-cathode (Danzmann et al 1988;Hollandt et al 1994) and Penning (Heise et al 1994) discharges, and silicon trap detectors (Goebel et al 1996) and photodiodes (Kuschnerus et al 1998;Canfield et al 1998).…”

Section: Transfer Standardsmentioning

confidence: 99%

Spectroradiometry with Space Telescopes

Pauluhn,

Huber,

Smith

et al. 2015

Preprint

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Radiometry, i.e., measuring the power of electromagnetic radiation -hitherto often referred to as "photometry" -is of fundamental importance in astronomy. We provide an overview of how to achieve a valid laboratory calibration of space telescopes and discuss ways to reliably extend this calibration to the spectroscopic telescope's performance in space. A lot of effort has been, and still is going into radiometric "calibration" of telescopes once they are in space; these methods use celestial primary and transfer standards and are based in part on stellar models. The history of the calibration of the Hubble Space Telescope serves as a platform to review these methods. However, we insist that a true calibration of spectroscopic space telescopes must directly be based on and traceable to laboratory standards, and thus be independent of the observations.

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“…For a 647 nm Kr laser, the function is nearly triangular in shape with a width at halfheight of 2.5 nm. Relative to the peak value, the measured values decrease to about IO-3 at 3 nm, 10-4 at 15 rm, and tO- 7 at 70 mm from the central wavelength. At 150 nm from the central wavelength, the value decreases to 10'-in the short-wavelength wing and to 10-' in the longwavelength wing.…”

Section: Spectral Responsivity Functionmentioning

confidence: 99%

“…The NBS scale of spectral irradiance is derived from the NBS scale of spectral radiance [6] which is based on a realization of the International Practical Temperature Scale (IPTS-68) starting with a gold-point blackbody [7]. The average spectral radiance over the exit aperture of a special integrating sphere source is determined and then the flux from the sphere source which enters the receiving aperture of the spectroradiometer is calculated.…”

Section: Scale Derivation and Transfermentioning

confidence: 99%

The NBS scale of spectral irradiance

Walker¹,

Saunders²,

Jackson³

et al. 1988

J. RES. NATL. BUR. STAN.

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This paper describes the measurement methods and the instrumentation used in the realization and transfer of the NBS scale of spectral irradiance. The basic measurement equation for the irradiance realization is derived. The spectral responsivity function, linearity of response, and "size of source" effect of the spectroradiometer are described. The analysis of sources of error and the estimates of uncertainty are described.The assigned uncertainties (3c, level) in spectral irradiance range from 2.2% at 250 nm to 1.0% at 654.6 nm to 6.5% at 2400 nm.

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The NBS scale of radiance temperature

Cited by 3 publications

References 5 publications

Spectroradiometry with space telescopes

Spectroradiometry with space telescopes

Spectroradiometry with Space Telescopes

The NBS scale of spectral irradiance

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