The Southern H-Alpha Sky Survey Atlas: Continuum Virtual Observatory Resource

Authors

1. John E. Gaustad (Swarthmore College), Peter R. McCullough (University of Illinois), Wayne Rosing (Las Cumbres Observatory), and Dave Van Buren (Extrasolar Research Corporation)

Published by

NASA/GSFC HEASARC

Abstract

The Southern H-Alpha Sky Survey Atlas is the product of a wide-angle 
digital imaging survey of the H-alpha emission from the warm ionized 
interstellar gas of our Galaxy. This atlas covers the southern hemisphere 
sky (declinations less than +15 degrees). The observations were taken with 
a robotic camera  operating at Cerro Tololo Inter-American Observatory (CTIO) 
in Chile.  The atlas consists of 2168 images covering 542 fields. There are four 
images available for each field: <b>H-alpha</b>, <b>Continuum</b>, <b>Continuum-Corrected</b> 
(the difference of the H-alpha and Continuum images), and <b>Smoothed</b> (median filtered to 5 pixel, or 4.0 arcminute, resolution to remove star residuals better).  The  <a href="https://amundsen.swarthmore.edu/SHASSA">SHASSA website</a> has more details of the data and the status of this and related projects.  Images can also be
obtained from the <a href="https://amundsen.astro.swarthmore.edu/SHASSA/#Images">Download Images</a> section at the SHASSA site.  Provenance:  John E. Gaustad (Swarthmore College), Peter R. McCullough (University of Illinois), Wayne Rosing (Las Cumbres Observatory), and Dave Van Buren (Extrasolar Research Corporation). This is a service of NASA HEASARC.
      

Keywords

1. surveys

See also HTML

https://skyview.gsfc.nasa.gov

IVOA Identifier IVOID

ivo://nasa.heasarc/skyview/shassa

Access

IVOA Simple Image Search SIAP

For use with a VO-enabled image processor (e.g., Aladin).
https://skyview.gsfc.nasa.gov/cgi-bin/vo/sia.pl?survey=shassa&

Web browser access HTML

https://skyview.gsfc.nasa.gov/cgi-bin/query.pl