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shassa [2021/07/21 14:12] Déborah Paradis |
shassa [2023/04/11 15:31] (current) Déborah Paradis |
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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. The survey covers the southern hemisphere (declinations less than +15 degrees). The observations were taken with a robotic camera operating at Cerro Tololo Inter-American Observatory (CTIO) in Chile. | 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. The survey covers the southern hemisphere (declinations less than +15 degrees). The observations were taken with a robotic camera operating at Cerro Tololo Inter-American Observatory (CTIO) in Chile. | ||
- | Four maps are available for this survey : H-alpha, Continuum, Continuum-Corrected (the difference of the H-alpha and Continuum images) and Smoothed Continuum-Corrected (median filtererd to 5 pixels, or 4.0 arcminute resolution to remove star residuals better). The original angular resolution is ~1 arcminute and units of the maps are dR. | + | Four maps are available for this survey : H-alpha, Continuum, Continuum-Corrected (the difference of the H-alpha and Continuum images) and Smoothed Continuum-Corrected (median filtererd to 5 pixels, or 4.0 arcminute resolution to remove star residuals better). The original angular resolution is ~1 arcminute and units of the maps are dR. \\ |
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+ | Healpix maps made by D. Paradis. | ||
=== Reference === | === Reference === | ||
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</html> | </html> | ||
+ | ===HiPS === | ||
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+ | SHASSA HiPS are available in Aladin Collections/Image | ||
=== Original WCS data=== | === Original WCS data=== |