VTSS Haivo://CDS/P/VTSS/HaCDSCDS2013-09-16T10:05:00Z2019-06-18T13:19:00ZCDS Helpdeskcds-question@unistra.frSky surveyOptical astronomyNarrow band photometryH alpha photometryThe VTSS is a wide-field image survey of the Galaxy's warm ionized interstellar medium (WIM, a 10,000 K plasma). The instrumentation used is the Virginia Tech Spectral Line Imaging Camera (SLIC), specially designed for obtaining sensitive, arcminute-resolution, 10-degree wide images of the 6563 H-alpha recombination line of hydrogen, and the [SII]6717,6731 angstrom doublet emission of singly ionized sulfur. This survey cover the northern hemisphere (declinations greater than -15 degrees).Original acknowledgement for data: http://www1.phys.vt.edu/~halpha/ack.html1998PASA...15..147Dhttps://alasky.cds.unistra.fr/VTSS/HaSurveyResearchIsDerivedFromVirginia Tech PhysicsThis HiPS is distributed under ODbL license by Unistra/CNRShttps://alasky.cds.unistra.fr/VTSS/Hahttps://alaskybis.cds.unistra.fr/VTSS/Hahttp://skies.esac.esa.int/VTSSHa2.951189804113696e-19 3.0267345073120964e-19https://alasky.cds.unistra.fr/VTSS/Ha/Moc.fitsOptical