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Updated: May 10, 2026
07:55
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
Published on: September 22, 2017
Beam profile for the Herschel-SPIRE Fourier transform spectrometer.
Gibion Makiwa1, David A Naylor, Marc Ferlet
1Institute for Space Imaging Science, Department of Physics and Astronomy, University of Lethbridge, Lethbridge, Alberta, Canada. gibion.makiwa@uleth.ca
Applied Optics
|June 6, 2013
Summary
The Herschel Space Observatory
Area of Science:
- Astronomy and Astrophysics
- Observational Cosmology
- Spectroscopy
Background:
- The Herschel Space Observatory's Spectral and Photometric Imaging Receiver (SPIRE) is crucial for imaging spectroscopy.
- Interpreting SPIRE data requires understanding its wavelength-dependent beam profile.
- Multimoded feed horns in SPIRE complicate beam profile analysis.
Purpose of the Study:
- To determine the wavelength dependence of the SPIRE spectrometer beam profile.
- To provide essential data for accurate interpretation of SPIRE spectral images.
- To address the complexities introduced by multimoded feed horns.
Main Methods:
- Conducted a series of specific observations using the SPIRE instrument.
- Analyzed observational data to characterize the spectrometer's beam.
- Focused on how the beam profile changes with wavelength.
Main Results:
- Successfully determined the wavelength dependence of the SPIRE spectrometer beam profile.
- Quantified how the beam characteristics vary across different wavelengths.
- Provided a detailed understanding of the beam behavior for SPIRE data analysis.
Conclusions:
- The wavelength dependence of the SPIRE beam profile has been characterized.
- This characterization is vital for accurate scientific analysis of SPIRE data.
- The findings will improve the reliability of spectroscopic measurements from Herschel.
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