The SPEAR Instrument and On-Orbit Performance

Abstract

The SPEAR (or 'FIMS') instrumentation has been used to conduct the first large-scale spectral mapping of diffuse cosmic far ultraviolet (FUV, 900-1750 AA) emission, including important diagnostics of interstellar hot (10^4 K - 10^6 K) and photoionized plasmas, H_2, and dust scattered starlight. The instrumentation's performance has allowed for the unprecedented detection of astrophysical diffuse far UV emission lines. A spectral resolution of 550 and an imaging resolution of 5' is achieved on-orbit in the Short (900 - 1175 AA) and Long (1335 - 1750 AA) bandpass channels within their respective 7.4 deg x 4.3' and 4.0 deg x 4.6' fields of view. We describe the SPEAR imaging spectrographs, their performance, and the nature and handling of their data.

References in corpus (2)

• The Spectroscopy of Plasma Evolution from Astrophysical Radiation Mission
• Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble

Cited by in corpus (31)

• The Spectroscopy of Plasma Evolution from Astrophysical Radiation Mission
• Observation of the Far-ultraviolet Continuum Background with SPEAR/FIMS
• Far UV and Optical Emissions from Three Very Large Supernova Remnants Located at Unusually High Galactic Latitudes
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• Comparison of the Diffuse Halpha and FUV Continuum Backgrounds: On the Origins of the Diffuse Halpha Background
• Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble
• Far-ultraviolet Observations of the Taurus-Perseus-Auriga Complex
• Diffuse Far-ultraviolet Observations of the Taurus Region
• SPEAR Far Ultraviolet Spectral Images of the Cygnus Loop
• Far Ultraviolet Spectral Images of the Vela Supernova Remnant
• Molecular Hydrogen Fluorescence in the Eridanus Superbubble
• Far-ultraviolet Observations of the North Ecliptic Pole with SPEAR
• Far-Ultraviolet Observations of the Spica Nebula and the Interaction Zone
• Measurement of Dust Optical Properties in Coalsack
• SPEAR far UV spectral imaging of highly ionized emission from the North Galactic Pole Region
• The Far Ultraviolet Background
• Global Far-Ultraviolet Properties of the Cygnus Loop
• Astrophysics in 2006
• Far-Ultraviolet Cooling Features of the Antlia Supernova Remnant
• Diffuse Far-ultraviolet Observation of the Lupus Loop Region
• Optical and UV surface brightness of translucent dark nebulae: Dust albedo, radiation field and fluorescence emission by H2
• C IV Emission-line Detection of the Supernova Remnant RCW 114
• Far-Ultraviolet Spectral Images of the Vela Supernova Remnant: Supplements and Comparisons with other Wavelength Images
• Global distribution of far-ultraviolet emissions from highly ionized gas in the Milky Way
• Far-ultraviolet Emission-line Morphologies of the Supernova Remnant G65.3+5.7
• Revisiting the Local Interstellar Radiation Field using Gaia DR3
• Bright stars observed by FIMS/SPEAR
• Hot Gas in the Galactic Thick Disk and Halo Near the Draco Cloud
• Construction of a far ultraviolet all sky map from an incomplete survey: Application of a deep learning algorithm
• UV and EUV Instruments
• Space Missions for Astronomy and Astrophysics in Korea: Past, Present, and Future