Finkbeinerivo://CDS/P/Finkbeiner10.26093/cds/aladin/3a4t-avbCDSCDS2010-12-14T01:07:00Z2019-05-05T06:07:00ZCDS Helpdeskcds-question@unistra.frSky surveyOptical astronomyNarrow band photometryH alpha photometryD. Finkbeiner has assembled a full sky Halpha map using data from several surveys: the Wisconsin H-Alpha Mapper (WHAM), the Virginia Tech Spectral-Line Survey (VTSS), and the Southern H-Alpha Sky Survey Atlas (SHASSA). The composite map can be used to provide limits on free-free foreground emission.Original acknowledgement for data: All of these data products are available to the public on the World Wide Web2003ApJS..146..407Fhttps://alasky.cds.unistra.fr/FinkbeinerHalphaSurveyResearchIsDerivedFromThe data can be found as an on line material in the reference 2003ApJS..146..407FThis HiPS is distributed under ODbL license by Unistra/CNRShttps://alasky.cds.unistra.fr/FinkbeinerHalphahttps://alaskybis.cds.unistra.fr/FinkbeinerHalphahttp://skies.esac.esa.int/FinkbeinerHa50753 518182.72115870842319e-19 4.138428869060268e-19https://alasky.cds.unistra.fr/FinkbeinerHalpha/Moc.fitsOptical