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UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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Published on: April 28, 2023

Fine-error-sensor camera designs and performance for the Lyman Far Ultraviolet Spectrographic Explorer telescope.

C Morbey, J B Hutchings

    Applied Optics
    |October 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    The Lyman Far Ultraviolet Spectrographic Explorer telescope needs a new camera system to accurately guide on faint stars. Two camera designs were developed to create a flat image field suitable for CCD registration.

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    Area of Science:

    • Astronomy and Astrophysics
    • Optical Engineering

    Background:

    • The Lyman Far Ultraviolet Spectrographic Explorer (FUSE) telescope utilizes a glancing-incidence design with a highly curved focal surface.
    • Accurate stellar guidance is crucial for FUSE observations, requiring the ability to track stars fainter than apparent magnitude 16 across a 10-arcmin field.

    Purpose of the Study:

    • To design and evaluate camera systems capable of reimaging the FUSE telescope's curved focal surface.
    • To achieve a sufficiently flat image field and appropriate scale for efficient Charge-Coupled Device (CCD) registration.

    Main Methods:

    • Presented two distinct camera designs for reimaging the telescope's focal plane.
    • Analyzed the optical performance and characteristics of each proposed camera design.

    Main Results:

    • Both camera designs successfully address the challenge of the telescope's curved focal surface.
    • The designs provide a flat field and suitable scale for CCD-based stellar registration.

    Conclusions:

    • The developed camera systems meet the stringent requirements for guiding on faint stars with the FUSE telescope.
    • These designs enable improved observational accuracy and data quality for ultraviolet spectroscopy.