The Virginia Tech H-alpha and [SII] Imaging Survey of the Northern Sky

Details The Virginia Tech H-alpha and [SII] Imaging Survey of the Northern Sky The Virginia Tech H-alpha and [SII] Imaging Survey of the Northern Sky

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.5309d&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #53.09; Bulletin of the American Astronomical Society, Vol. 31, p.1455

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We are conducting a northern hemisphere survey of the Galactic H-alpha and [SII] emission. Our instrument, the Virginia Tech Spectral Line Imaging Camera (SLIC), utilizes a fast objective lens (f/1.2), a cryogenically-cooled TK 512x512 CCD, and narrow-band interference filters. The result is 10-degree diameter images with 1.6-arcminute pixel sizes. Observations in H-alpha are nearly complete over a region within 30 degrees of the Galactic plane between longitudes of 0 and 240 degrees, plus selected regions farther from the plane. [SII] observations have already covered a major fraction of the sky observed in H-alpha. Observations of the entire northern hemisphere in both H-alpha and [SII] are in progress. Processed images are made available to the community on the Web (http://www.phys.vt.edu/halpha). Our survey, with its 1.6 arcminute resolution, is complementary to Reynold's and collaborators' WHAM (Wisconsin Hα Mapper) survey which collects detailed spectral information with approximately 1 degree angular resolution. This research is supported by NSF grants AST-9319670 and AST-9800476 and a grant from the Horton Foundation to Virginia Tech.

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