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The Virginia Tech Spectral-Line Survey (VTSS)
The VTSS is a wide-field image survey of the Galaxy's warm ionized interstellar medium (a 10,000 K
plasma).
The survey is carried out using the Virginia Tech Spectral Line Imaging Camera (SLIC),
specially designed for obtaining sensitive, arcminute-resolution,
10-degree wide images of the 6563Å
H-alpha recombination line of hydrogen,
and the [SII]6717,6731Å
doublet emission of singly ionized sulfur.
This survey will cover the northern hemisphere (declinations greater than -15
degrees).
The resolution of the map is 1.6
' and units are Rayleighs (R)
.
The Continuum-Corrected H-alpha images are produced by a process including the alignment and subtraction of a suitably scaled version of a continuum image from the H-alpha image.
Reference
'An Imaging Survey of Northern Galactic Hα Emission with Arcminute Resolution' by Dennison, B., Simonetti, J. H., and Topasna, G. A., 1998, PASA, 15, 147 http://adsabs.harvard.edu/abs/1998PASA...15..147D
VTSS Halpha | VTSS Continuum corrected Halpha |
---|---|
Maps (New version on March 12th 2018)
- H-alpha (1.6'): VTSS_1_4096.fits
* H-alpha (4'): VTSS_4arcm_1_2048.fits
- Continuum Corrected H-alpha: VTSS_CONT_1_4096.fits
HiPS
VTSS HiPS are available in Aladin Collections/Image